Textbox In gridview not saving its value in table

Textbox In gridview not saving its value in table - c#

I have a gridview gv_Products and a gridview Gv_selected. My products gridview has a checkbox that when is checked the selected row is entered in the gv_selected gridview.
I have added a textbox in gv_selected gridiew to enter the quantity i want to reorder. The quantity that i enter loses its value after i press the submit button.
<asp:GridView ID="gvSelected" runat="server"
AutoGenerateColumns = "False" Font-Names = "Arial" CssClass="gridviewsSmall" Font-Size = "11pt"
OnRowDataBound="GridView_gvSelected_RowDataBound" EnableViewState="False"
EmptyDataText = "No Records Selected" >
<Columns>
<asp:BoundField DataField="ProductId" HeaderText="Product ID" ReadOnly="True"
SortExpression="ProductId" />
<asp:TemplateField HeaderText="Product No" SortExpression="ProductNo">
<ItemTemplate>
<asp:Label ID="Label2" runat="server" Text='<%# Bind("ProductNo") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Product Name" SortExpression="Product_name">
<ItemTemplate>
<asp:Label ID="Label3" runat="server" Text='<%# Bind("Product_name") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:BoundField DataField="SupplierId" HeaderText="Supplier ID" ReadOnly="True"
SortExpression="SupplierId" />
<asp:TemplateField HeaderText="Quantity" SortExpression="Quantity">
<ItemTemplate>
<asp:TextBox ID="TextBox1" runat="server" Text='<%#Bind("Quantity") %>'></asp:TextBox>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
<asp:Button ID="btnSendOrder" Visible="false" runat="server" Text="Send Order"
onclick="btnSendOrder_Click" />
Here is my code behind for adding rows in gvSelected gridview
private DataTable CreateDataTable()
{
DataTable dt = new DataTable();
dt.Columns.Add("ProductId");
dt.Columns.Add("ProductNo");
dt.Columns.Add("Product_name");
dt.Columns.Add("SupplierId");
dt.Columns.Add("Quantity");
dt.AcceptChanges();
return dt;
}
private DataTable AddRow(GridViewRow gvRow, DataTable dt)
{
DataRow[] dr = dt.Select("ProductId = '" + gvRow.Cells[3].Text + "'");
if (dr.Length <= 0)
{
dt.Rows.Add();
dt.Rows[dt.Rows.Count - 1]["ProductId"] = gvRow.Cells[3].Text;
dt.Rows[dt.Rows.Count - 1]["ProductNo"] = (gvRow.FindControl("Label2") as Label).Text;
dt.Rows[dt.Rows.Count - 1]["Product_name"] = (gvRow.FindControl("Label3") as Label).Text;
dt.Rows[dt.Rows.Count - 1]["SupplierId"] = (gvRow.FindControl("Label5") as Label).Text;
dt.Rows[dt.Rows.Count - 1]["Quantity"] = 0;
dt.AcceptChanges();
}
return dt;
}
protected void CheckBox_CheckChanged(object sender, EventArgs e)
{
GetData();
SetData();
BindSecondaryGrid();
}
private void BindSecondaryGrid()
{
DataTable dt = (DataTable)ViewState["SelectedRecords"];
gvSelected.DataSource = dt;
gvSelected.DataBind();
}
And here is the submit button!
protected void btnSendOrder_Click(object sender, EventArgs e)
{
t_supplier_orders newOrder = new t_supplier_orders();
newOrder.UserName = User.Identity.Name;
newOrder.Order_date = DateTime.Now;
newOrder.Order_status = "Pending";
MembershipUser myObject = Membership.GetUser();
Guid UserID = new Guid(myObject.ProviderUserKey.ToString());
newOrder.UserId = UserID;
newOrder.SupplierId = Convert.ToInt32(ddl1.SelectedValue);
newOrder.Received_date = null;
Bohemian.t_supplier_orders.AddObject(newOrder);
Bohemian.SaveChanges();
//------------------------------------------------------------------------+
// Create a new OderDetail Record for each item in the gvSelected |
//------------------------------------------------------------------------+
foreach (GridViewRow row in gvSelected.Rows)
{
{
t_supplier_orders_details od = new t_supplier_orders_details();
TextBox txt1 = (TextBox)gvSelected.FindControl("TextBox1");
od.OrderId = newOrder.OrderId;
od.ProductId = Convert.ToInt32(row.Cells[0].Text);
od.Product_name = (row.FindControl("Label3") as Label).Text;
od.ProductNo = (row.FindControl("Label2") as Label).Text;
od.Quantity = Convert.ToInt32(txt1.text);
Bohemian.t_supplier_orders_details.AddObject(od);
}
}
Bohemian.SaveChanges();
lblSuccess.Text = "The Order has been successfully sent to supplier!!";
lblSuccess.ForeColor=System.Drawing.Color.BlueViolet;
lblSuccess.Font.Bold = true;
}

I assume that you are assigning the DataSource and DataBind the GridView on every postback. That will overwite all changes.
So wrap your code in a !IsPostBack check:
protected void Page_Load()
{
if(!IsPostBack)
{
BindSecondaryGrid();
}
}
By the way, you should not store the DataTable in ViewState since that will blow it up.

Related

what is the command of select in grid view asp.net

I have a GridView called gridview1
What I want is that if the user select or click on specific row some action will happen.
For example I want to get the value from that row and store it in a new variable.
How can I do it? I'm confused about what I should do to get the value?
protected void GridView1_SelectedIndexChanging(object sender, GridViewSelectEventArgs e)
{
string stuId = ?
}

<asp:GridView ID="GridView1" runat="server" HeaderStyle-BackColor="#3AC0F2" HeaderStyle-ForeColor="White"
AutoGenerateColumns="false" OnSelectedIndexChanged = "OnSelectedIndexChanged">
<Columns>
<asp:BoundField DataField="Name" HeaderText="Name" ItemStyle-Width="150" />
<asp:TemplateField HeaderText="Country" ItemStyle-Width="150">
<ItemTemplate>
<asp:Label ID="lblCountry" runat="server" Text='<%# Eval("Country") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:ButtonField Text="Select" CommandName="Select" ItemStyle-Width="150" />
</Columns>
</asp:GridView>
<br />
<u>Selected Row Values: </u>
<br />
<br />
<asp:Label ID="lblValues" runat="server" Text=""></asp:Label>
aspx.cs code
protected void Page_Load(object sender, EventArgs e)
{
if (!this.IsPostBack)
{
DataTable dt = new DataTable();
dt.Columns.AddRange(new DataColumn[3] { new DataColumn("Id"), new DataColumn("Name"), new DataColumn("Country") });
dt.Rows.Add(1, "John Hammond", "United States");
dt.Rows.Add(2, "Mudassar Khan", "India");
dt.Rows.Add(3, "Suzanne Mathews", "France");
dt.Rows.Add(4, "Robert Schidner", "Russia");
GridView1.DataSource = dt;
GridView1.DataBind();
}
}
protected void OnSelectedIndexChanged(object sender, EventArgs e)
{
//Accessing BoundField Column
string name = GridView1.SelectedRow.Cells[0].Text;
//Accessing TemplateField Column controls
string country = (GridView1.SelectedRow.FindControl("lblCountry") as Label).Text;
lblValues.Text = "<b>Name:</b> " + name + " <b>Country:</b> " + country;
}
you simply copy and paste your issue is resolve.

you could use like this:
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns = "false"
OnRowCommand = "OnRowCommand">
<Columns>
<asp:ButtonField CommandName = "ButtonField" DataTextField = "StudID"
ButtonType = "Button"/>
</Columns>
</asp:GridView>
protected void OnRowCommand(object sender, GridViewCommandEventArgs e)
{
int index = Convert.ToInt32(e.CommandArgument);
GridViewRow gvRow = GridView1.Rows[index];
}

Multiple controls in one itemtemplate - GridView

I have a gridview in web application which show textboxes in each columns in page load event. Now what I want to do is to add another label control in this itemtemplate. Show that when I type something in the textbox and click save, I can show the label instead of the textbox to my database. I got the saving part work fine but not sure how to show the text I typed in a label. What I have right now is after I clicked the save button, the textbox stay in the gridview and label not show up. Any idea how to fix this?
<asp:GridView ID='gvMain' ruant="server">
<Columns>
<asp:TemplateField HeaderText ="LastName">
<ItemTemplate>
<asp:TextBox ID="txtFName" runat="server"/>
<asp:Label ID="lblFName" ruant="server" />
</Columns>
</asp:GridView>
Please see this link for reference.
http://www.aspsnippets.com/Articles/Adding-Dynamic-Rows-in-ASP.Net-GridView-Control-with-TextBoxes.aspx

I would add both controls to a cell item template and hide/show them based on if I save a row or add a new one. So, my code would be like the following:
Markup:
<form id="form1" runat="server">
<div>
<asp:GridView ID="Gridview1" runat="server" ShowFooter="true" AutoGenerateColumns="false">
<Columns>
<asp:BoundField DataField="RowNumber" HeaderText="Row Number" />
<asp:TemplateField HeaderText="Header 1">
<ItemTemplate>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
<asp:Label ID="Label1" runat="server" Text='<%# Eval("Column1") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Header 2">
<ItemTemplate>
<asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>
<asp:Label ID="Label2" runat="server" Text='<%# Eval("Column2") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Header 3">
<ItemTemplate>
<asp:TextBox ID="TextBox3" runat="server"></asp:TextBox>
<asp:Label ID="Label3" runat="server" Text='<%# Eval("Column3") %>'></asp:Label>
</ItemTemplate>
<FooterStyle HorizontalAlign="Right" />
<FooterTemplate>
<asp:Button ID="ButtonAdd" runat="server" Text="Add New Row"
OnClick="ButtonAdd_Click" />
<asp:Button ID="ButtonSave" runat="server" Text="Save"
OnClick="ButtonSave_Click" />
</FooterTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
</div>
</form>
Code-behind:
private void SetInitialRow() {
DataTable dt = new DataTable();
DataRow dr = null;
dt.Columns.Add(new DataColumn("RowNumber", typeof(string)));
dt.Columns.Add(new DataColumn("Column1", typeof(string)));
dt.Columns.Add(new DataColumn("Column2", typeof(string)));
dt.Columns.Add(new DataColumn("Column3", typeof(string)));
dr = dt.NewRow();
dr["RowNumber"] = 1;
dr["Column1"] = string.Empty;
dr["Column2"] = string.Empty;
dr["Column3"] = string.Empty;
dt.Rows.Add(dr);
Table = dt;
BindGrid();
SwitchMode(false);
}
private void AddNewRowToGrid() {
if(Table != null) {
DataRow row = Table.NewRow();
Table.Rows.Add(row);
BindGrid();
SwitchMode(false);
}
else {
Response.Write("ViewState is null");
}
}
private void SaveRow() {
if(Table != null) {
int rowIndex = Table.Rows.Count - 1;
TextBox box1 = (TextBox)Gridview1.Rows[rowIndex].Cells[1].FindControl("TextBox1");
TextBox box2 = (TextBox)Gridview1.Rows[rowIndex].Cells[2].FindControl("TextBox2");
TextBox box3 = (TextBox)Gridview1.Rows[rowIndex].Cells[3].FindControl("TextBox3");
Table.Rows[rowIndex]["Column1"] = box1.Text;
Table.Rows[rowIndex]["Column2"] = box2.Text;
Table.Rows[rowIndex]["Column3"] = box3.Text;
BindGrid();
SwitchMode(true);
}
else {
Response.Write("ViewState is null");
}
}
private void SwitchMode(bool add) {
Button saveBtn = (Button)Gridview1.FooterRow.Cells[3].FindControl("ButtonSave");
saveBtn.Visible = !add;
Button addBtn = (Button)Gridview1.FooterRow.Cells[3].FindControl("ButtonAdd");
addBtn.Visible = add;
SwitchControl(add);
}
private void SwitchControl(bool add) {
for(int i = 0; i < Table.Rows.Count; i++) {
bool txtVisible = false;
if (i == Table.Rows.Count - 1) {
txtVisible = !add;
}
TextBox box1 = (TextBox)Gridview1.Rows[i].Cells[1].FindControl("TextBox1");
box1.Visible = txtVisible;
TextBox box2 = (TextBox)Gridview1.Rows[i].Cells[2].FindControl("TextBox2");
box2.Visible = txtVisible;
TextBox box3 = (TextBox)Gridview1.Rows[i].Cells[3].FindControl("TextBox3");
box3.Visible = txtVisible;
Label label1 = (Label)Gridview1.Rows[i].Cells[1].FindControl("Label1");
label1.Visible = !txtVisible;
Label label2 = (Label)Gridview1.Rows[i].Cells[2].FindControl("Label2");
label2.Visible = !txtVisible;
Label label3 = (Label)Gridview1.Rows[i].Cells[3].FindControl("Label3");
label3.Visible = !txtVisible;
}
}
private DataTable Table {
get {
return ViewState["CurrentTable"] as DataTable;
}
set {
ViewState["CurrentTable"] = value;
}
}
private void BindGrid() {
Gridview1.DataSource = Table;
Gridview1.DataBind();
}
protected void Page_Load(object sender, EventArgs e) {
if(!Page.IsPostBack) {
SetInitialRow();
}
}
protected void ButtonAdd_Click(object sender, EventArgs e) {
AddNewRowToGrid();
}
protected void ButtonSave_Click(object sender, EventArgs e) {
SaveRow();
}
So, first I see the Grid with one row and I can populate it with data via TextBoxes and click Save. Then, TextBoxes become Labels and Add New Row is visible. If I click it, a new row with TextBoxes appears.

How to Keep row values in gridview after adding new row?

I have a gridview with textboxes for item no, desc qty, cost, extncost. When itemno entered in the textbox desc and cost of the item will comes automatically by on textbox event change.
Here when i add a new row in the grid view, values of last entered value got disappears.
when i am checking using break point i can able to see the last entered values in data table.
Since, while adding new row has blank text boxes, now system considers blank text box for on text change event. So, last entered values also not displaying. Text box changes in one row also affects in other rows.
Here is the ASPX.page code:
<asp:UpdatePanel ID="gin_pnlupdt" runat="server" UpdateMode="Conditional" ChildrenAsTriggers="true">
<ContentTemplate>
<asp:GridView ID="grv_gindet" runat="server" ShowFooter="True" AutoGenerateColumns="False"
CellPadding="4" ForeColor="#333333" GridLines="None" OnRowDeleting="grvStudentDetails_RowDeleting"
OnRowDataBound="grv_gindtrowcmd" OnRowCommand="grv_gindetrowcmd">
<Columns>
<asp:BoundField DataField="RowNumber" HeaderText="SNo" />
<asp:TemplateField HeaderText="Item Number">
<ItemTemplate>
<asp:TextBox ID="txt_itemno" runat="server" OnTextChanged="txt_itemno_changed" AutoPostBack="True"></asp:TextBox>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Item Description">
<ItemTemplate>
<asp:Label ID="txt_itemdesc" runat="server"></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Quantity">
<ItemTemplate>
<asp:TextBox ID="txt_qty" runat="server"></asp:TextBox>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Unit Cost">
<ItemTemplate>
<asp:Label ID="txt_ucost" runat="server"></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Extended Cost">
<ItemTemplate>
<asp:Label ID="txt_extncost" runat="server"></asp:Label>
</ItemTemplate>
<FooterStyle HorizontalAlign="Right" />
<FooterTemplate>
<asp:Button ID="ButtonAdd" runat="server" Text="Add New Row" OnClick="BtnAddRow" />
</FooterTemplate>
</asp:TemplateField>
<asp:CommandField ShowDeleteButton="True" />
</Columns>
<FooterStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
<RowStyle BackColor="#EFF3FB" />
<EditRowStyle BackColor="#2461BF" />
<SelectedRowStyle BackColor="#D1DDF1" Font-Bold="True" ForeColor="#333333" />
<PagerStyle BackColor="#2461BF" ForeColor="White" HorizontalAlign="Center" />
<HeaderStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
<AlternatingRowStyle BackColor="White" />
</asp:GridView>
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="grv_gindet" />
</Triggers>
</asp:UpdatePanel>
Here is the CS code for add new row:
protected void AddNewRow()
{
int rowIndex = 0;
if (ViewState["CurrentTable"] != null)
{
DataTable dtCurrentTable = (DataTable)ViewState["CurrentTable"];
DataRow drCurrentRow = null;
if (dtCurrentTable.Rows.Count > 0)
{
for (int i = 1; i <= dtCurrentTable.Rows.Count; i++)
{
TextBox TextBoxItem =
(TextBox)grv_gindet.Rows[rowIndex].Cells[1].FindControl("txt_itemno");
Label TextBoxDesc =
(Label)grv_gindet.Rows[rowIndex].Cells[2].FindControl("txt_itemdesc");
TextBox TextBoxQty =
(TextBox)grv_gindet.Rows[rowIndex].Cells[3].FindControl("txt_qty");
Label TextBoxucost =
(Label)grv_gindet.Rows[rowIndex].Cells[4].FindControl("txt_ucost");
Label TextBoxextncost =
(Label)grv_gindet.Rows[rowIndex].Cells[5].FindControl("txt_extncost");
drCurrentRow = dtCurrentTable.NewRow();
drCurrentRow["RowNumber"] = i + 1;
dtCurrentTable.Rows[i - 1]["Col1"] = TextBoxItem.Text;
dtCurrentTable.Rows[i - 1]["Col2"] = TextBoxDesc.Text;
dtCurrentTable.Rows[i - 1]["Col3"] = TextBoxQty.Text;
dtCurrentTable.Rows[i - 1]["Col4"] = TextBoxucost.Text;
dtCurrentTable.Rows[i - 1]["Col5"] = TextBoxextncost.Text;
rowIndex++;
}
dtCurrentTable.Rows.Add(drCurrentRow);
ViewState["CurrentTable"] = dtCurrentTable;
grv_gindet.DataSource = dtCurrentTable;
grv_gindet.DataBind();
}
}
else
{
Response.Write("ViewState is null");
}
SetPreviousData();
}
Code for retrive Previous data:
private void SetPreviousData()
{
int rowIndex = 0;
if (ViewState["CurrentTable"] != null)
{
DataTable dt = (DataTable)ViewState["CurrentTable"];
if (dt.Rows.Count > 0)
{
for (int i = 0; i < dt.Rows.Count; i++)
{
TextBox TextBoxItem = (TextBox)grv_gindet.Rows[rowIndex].Cells[1].FindControl("txt_itemno");
Label TextBoxDesc = (Label)grv_gindet.Rows[rowIndex].Cells[2].FindControl("txt_itemdesc");
TextBox TextBoxQty =
(TextBox)grv_gindet.Rows[rowIndex].Cells[3].FindControl("txt_qty");
Label TextBoxucost =
(Label)grv_gindet.Rows[rowIndex].Cells[4].FindControl("txt_ucost");
Label TextBoxextncost =
(Label)grv_gindet.Rows[rowIndex].Cells[5].FindControl("txt_extncost");
TextBoxItem.Text = dt.Rows[i]["Col1"].ToString();
TextBoxDesc.Text = dt.Rows[i]["Col2"].ToString();
TextBoxQty.Text = dt.Rows[i]["Col3"].ToString();
TextBoxucost.Text = dt.Rows[i]["Col4"].ToString();
TextBoxextncost.Text = dt.Rows[i]["Col5"].ToString();
rowIndex++;
}
}
}
}
Textbox change event:
protected void txt_itemno_changed(object sender, EventArgs e)
{
//TextBox thisTextBox = (TextBox)sender;
//GridViewRow thisGridViewRow = (GridViewRow)thisTextBox.Parent.Parent;
//int row = thisGridViewRow.RowIndex;
GridViewRow currentrow = (GridViewRow)((TextBox)sender).Parent.Parent;
TextBox thisTextBox = (TextBox)currentrow.FindControl("txt_itemno");
int row = currentrow.RowIndex;
//rowChanged[row] = true;
using (SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["AWCC"].ConnectionString))
{
con.Open();
SqlCommand cmd = new SqlCommand("SELECT ITEMDET.ITEMDESC,RGITEMDET.UNITCOST FROM ITEMDET JOIN RGITEMDET ON RGITEMDET.ITEMNO=ITEMDET.ITEMNO WHERE ITEMDET.ITEMNO ='" + thisTextBox.Text + "' ", con);
SqlDataReader dr = cmd.ExecuteReader();
while (dr.Read())
{
grv_gindet.Rows[row].Cells[2].Text = dr["ITEMDESC"].ToString();
grv_gindet.Rows[row].Cells[4].Text = dr["UNITCOST"].ToString();
}
}
thisTextBox.Enabled = false;
}
Postback control code for gridview child element:
protected void grv_gindtrowcmd(object sender, GridViewRowEventArgs e)
{
try
{
TextBox txtitm = e.Row.FindControl("txt_itemno") as TextBox;
LinkButton lnkbtn = e.Row.FindControl("ShowDeleteButton") as LinkButton;
ScriptManager.GetCurrent(this).RegisterAsyncPostBackControl(txtitm);
ScriptManager.GetCurrent(this).RegisterAsyncPostBackControl(lnkbtn);
}
catch
{
}
}
protected void grv_gindetrowcmd(object sender, GridViewCommandEventArgs e)
{
try
{
Button btnad = grv_gindet.FooterRow.FindControl("ButtonAdd") as Button;
ScriptManager.GetCurrent(this).RegisterAsyncPostBackControl(btnad);
}
catch
{
}
}
Kinldy provide a solution ASAP, do the needful.

I hope this will help you, change this in Textchange event
GridViewRow currentrow = (GridViewRow)((TextBox)sender).Parent.Parent.Parent.Parent;
TextBox thisTextBox = (TextBox)currentrow.FindControl("txt_itemno");
if (!string.IsNullOrWhiteSpace(thisTextBox.Text))
{
int row = currentrow.RowIndex;
//rowChanged[row] = true;
using (SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["AWCC"].ConnectionString))
{
con.Open();
SqlCommand cmd = new SqlCommand("SELECT ITEMDET.ITEMDESC,RGITEMDET.UNITCOST FROM ITEMDET JOIN RGITEMDET ON RGITEMDET.ITEMNO=ITEMDET.ITEMNO WHERE ITEMDET.ITEMNO ='" + thisTextBox.Text + "' ", con);
SqlDataReader dr = cmd.ExecuteReader();
while (dr.Read())
{
((Label)(grv_gindet.Rows[row].FindControl("txt_itemdesc"))).Text = dr["ITEMDESC"].ToString();
((TextBox)(grv_gindet.Rows[row].FindControl("txt_ucost"))).Text = dr["UNITCOST"].ToString();
}
con.Close();
}
thisTextBox.Enabled = false;
}

dropdownlist name has a SelectedValue which is invalid because it does not exist in the list of items

What I want to achieve is when I click on edit, the Blogtype field in the gridview will be changed to dropdownlist. And Since my database have 3 data in the blogtype which is community work, competition and overseas experience. The dropdownlist will be allows me to select either of these three. After choosing either of this one, and I clicked update, it will be updated in the database. How to do it as I have error in the 3rd screenshot.The name of my dropdownlist for blogtype field is ddlBlogType. help
But for my current code, after clicking edit, it will come out this error. 'ddlBlogType' has a SelectedValue which is invalid because it does not exist in the list of items.
Parameter name: value
Source Code
<asp:GridView ID="grdBlog" runat="server" style=
"margin-left: 0px" Width="1000px" Height="147px" AutoGenerateColumns="False"
onrowcancelingedit="grdBlog_RowCancelingEdit" onrowediting="grdBlog_RowEditing"
onrowupdating="grdBlog_RowUpdating" DataKeyNames="BlogID"
onrowdeleting="grdBlog_RowDeleting" AllowPaging="True"
onpageindexchanging="grdBlog_PageIndexChanging" PageSize="5"
BackColor="White" BorderColor="White" BorderStyle="Ridge" BorderWidth="2px"
CellPadding="3" CellSpacing="1" GridLines="None" >
<Columns>
<asp:BoundField DataField="BlogID" HeaderText="BlogID" ReadOnly="true"
SortExpression="BlogID" />
<asp:TemplateField HeaderText="Name">
<EditItemTemplate>
<asp:TextBox ID="txtName" runat="server" Width="80px" Text='<%# Bind("Name") %>'></asp:TextBox>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="Label1" runat="server" Text='<%# Bind("Name") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="BlogType">
<EditItemTemplate>
<asp:DropDownList ID="ddlBlogType" runat="server" Width="80px" Text='<%# Bind("BlogType") %>'></asp:DropDownList>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="Label2" runat="server" Text='<%# Bind("BlogType") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Description">
<EditItemTemplate>
<asp:TextBox ID="txtDescription" runat="server" Width="80px" Text='<%# Bind("Description") %>'></asp:TextBox>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="Label3" runat="server" Text='<%# Bind("Description") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:BoundField DataField="DateEntry" HeaderText="Date Entry" ReadOnly="true" />
<asp:TemplateField HeaderText="Blog Story">
<EditItemTemplate>
<asp:TextBox ID="txtBlogStory" runat="server" TextMode="multiline" rows="10" Text='<%# Bind("BlogStory") %>'></asp:TextBox>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="Label5" runat="server" Text='<%# Bind("BlogStory") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:BoundField DataField="modifiedby" HeaderText="Last Modified By" ReadOnly="true" />
<asp:BoundField DataField="modifieddate" HeaderText="Last Modified Date" ReadOnly="true" />
<asp:CommandField ShowEditButton="True" CausesValidation="false" />
<asp:TemplateField ShowHeader="False">
<ItemTemplate>
<asp:LinkButton ID="LinkButton1" runat="server" CausesValidation="False"
CommandName="Delete" Text="Delete" OnClientClick="javascript : return confirm('Confirm delete this record?');"></asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>
</Columns>
<FooterStyle BackColor="#C6C3C6" ForeColor="Black" />
<HeaderStyle BackColor="#4A3C8C" Font-Bold="True" ForeColor="#E7E7FF" />
<PagerStyle BackColor="#C6C3C6" ForeColor="Black" HorizontalAlign="Right" />
<RowStyle BackColor="#DEDFDE" ForeColor="Black" />
<SelectedRowStyle BackColor="#9471DE" Font-Bold="True" ForeColor="White" />
<SortedAscendingCellStyle BackColor="#F1F1F1" />
<SortedAscendingHeaderStyle BackColor="#594B9C" />
<SortedDescendingCellStyle BackColor="#CAC9C9" />
<SortedDescendingHeaderStyle BackColor="#33276A" />
</asp:GridView>
Code Behind Code
if (Page.IsPostBack == false)
{
bindResultGridView();
}
private void bindResultGridView()
{
String ConStr = ConfigurationManager.ConnectionStrings["BlogConnectionString"].ConnectionString;
SqlConnection con = new SqlConnection(ConStr);
try
{
String SQL = null;
SQL = "SELECT BlogID, Name, Blogtype, Description, convert(varchar,Dateentry, 103) as Dateentry, BlogStory, modifiedby, convert(varchar,modifieddate, 103) as modifieddate FROM [EntryTable] ORDER BY BlogID DESC";
SqlCommand cmd = new SqlCommand(SQL, con);
con.Open();
SqlDataReader reader = cmd.ExecuteReader();
DataTable dt = new DataTable();
dt.Load(reader);
grdBlog.DataSource = dt;
grdBlog.DataBind();
reader.Close();
}
finally
{
con.Close();
}
}
protected void grdBlog_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
{
grdBlog.EditIndex = -1;
bindResultGridView();
}
protected void grdBlog_RowEditing(object sender, GridViewEditEventArgs e)
{
grdBlog.EditIndex = e.NewEditIndex;
bindResultGridView();
}
protected void grdBlog_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
int selectedRow = e.RowIndex; //get selected row
// get product id from data key
int blogid = (int)grdBlog.DataKeys[selectedRow].Value;
// get current grid view row
GridViewRow row = (GridViewRow)grdBlog.Rows[selectedRow];
TextBox name = (TextBox)row.FindControl("txtName");
// find text box for txtPrice
DropDownList blogtype = (DropDownList)row.FindControl("ddlBlogType");
TextBox description = (TextBox)row.FindControl("txtDescription");
TextBox blogstory = (TextBox)row.FindControl("txtBlogStory");
// Remove $ sign
string strName = name.Text;
string strBlogType = blogtype.Text;
string strDescription = description.Text;
string strBlogStory = blogstory.Text;
/*
DateTime datDate;
*/
/*
if (DateTime.TryParseExact(strDateEntry, new string[] { "dd/MM/yyyy" },
System.Globalization.CultureInfo.InvariantCulture,
System.Globalization.DateTimeStyles.None, out datDate))
{
*/
updateBlogGridviewRecord(blogid, strName, strBlogType, strDescription, strBlogStory);
/*
}
else
{
lblError.Visible = true;
lblError.Text = "Invalid Date";
lblSuccess.Visible = false;
}
*/
}
private void updateBlogGridviewRecord(int blogid, string strName, string strBlogType, string strDescription, string strBlogStory)
{
try
{
string strConnectionString = ConfigurationManager.ConnectionStrings["BlogConnectionString"].ConnectionString;
SqlConnection myConnect = new SqlConnection(strConnectionString);
string strCommandText = "UPDATE EntryTable SET [ModifiedBy]=#Modifier, [ModifiedDate] = GETDATE(), [Name]=#Name, [BlogType]=#BlogType, [Description]=#Description, [BlogStory]=#BlogStory WHERE [BlogID]=#BlogID";
/*string strCommandText = "UPDATE EntryTable SET [Name]=#Name, [BlogType]=#BlogType, [Description]=#Description, [DateEntry]=#DateEntry, [BlogStory]=#BlogStory WHERE [BlogID]=#BlogID"; */
/*string strCommandText = "UPDATE EntryTable SET [ModifiedBy] = [Name], [Name]=#Name, [BlogType]=#BlogType, [Description]=#Description, [DateEntry]=#DateEntry, [BlogStory]=#BlogStory WHERE [BlogID]=#BlogID"; */
SqlCommand cmd = new SqlCommand(strCommandText, myConnect);
cmd.Parameters.AddWithValue("#BlogID", blogid);
cmd.Parameters.AddWithValue("#Name", strName);
cmd.Parameters.AddWithValue("#BlogType", strBlogType);
//cmd.Parameters.AddWithValue("#DateEntry", datDate);
cmd.Parameters.AddWithValue("#Description", strDescription);
cmd.Parameters.AddWithValue("#BlogStory", strBlogStory);
cmd.Parameters.AddWithValue("#Modifier", Session["Username"]);
myConnect.Open();
int result = cmd.ExecuteNonQuery();
if (result > 0)
{
lblSuccess.Visible = true;
lblSuccess.Text = "Record updated!";
lblError.Visible = false;
}
else
{
lblSuccess.Visible = true;
lblError.Text = "Update fail";
lblError.Visible = false;
}
myConnect.Close();
//Cancel Edit Mode
grdBlog.EditIndex = -1;
bindResultGridView();
}
catch
{
lblError.Visible = true;
lblError.Text = "Invalid Data";
lblSuccess.Visible = false;
}
}
Did it using the edited code below
Source Code
<asp:TemplateField HeaderText="BlogType">
<EditItemTemplate>
<asp:DropDownList ID="ddlBlogType" runat="server" DataTextField="ddlBlogType" DataValueField="ddlBlogType" SelectedValue='<%# Eval("blogType") %>'>
<asp:ListItem Enabled="true" Text="Community Work" Value="Community Work"></asp:ListItem>
<asp:ListItem Text="Competition" Value="Competition"></asp:ListItem>
<asp:ListItem Text="Overseas Experience" Value="Overseas Experience"></asp:ListItem>
</asp:DropDownList>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="Label2" runat="server" Text='<%# Bind("BlogType") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
Code behind Code
protected void grdBlog_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
int selectedRow = e.RowIndex; //get selected row
// get product id from data key
int blogid = (int)grdBlog.DataKeys[selectedRow].Value;
// get current grid view row
GridViewRow row = (GridViewRow)grdBlog.Rows[selectedRow];
TextBox name = (TextBox)row.FindControl("txtName");
// find text box for txtPrice
DropDownList blogtype = (DropDownList)row.FindControl("ddlBlogType");
TextBox description = (TextBox)row.FindControl("txtDescription");
TextBox blogstory = (TextBox)row.FindControl("txtBlogStory");
// Remove $ sign
string strName = name.Text;
string strBlogType = blogtype.SelectedValue;
string strDescription = description.Text;
string strBlogStory = blogstory.Text;
}

I see the issue as the way you populate the DropDownList. The code isn't shown in your post, so assuming you don't have anything to that effect.
So you normally set the desired gridviewrow in edit mode as below:
protected void grdBlog_RowEditing(object sender, GridViewEditEventArgs e)
{
grdBlog.EditIndex = e.NewEditIndex;
bindResultGridView();
}
Now we need to figure when exactly to bind the dropdownlist. Therefore when the particular datarow (which is in edit mode) is getting databound we have a chance to obtain the reference to the corresponding edit row's dropdownlist. Hence for this you can refer this post.
In summary you need to handle the DataBound event of the gridview and determine from its rowstate what mode it is in. Sharing the code sample from linked post below:
protected void gv_RowDataBound(object sender, GridViewEditEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
if ((e.Row.RowState & DataControlRowState.Edit) > 0)
{
DropDownList ddList= (DropDownList)e.Row.FindControl("DStatusEdit");
//bind dropdownlist
DataTable dt = con.GetData("select distinct status from directory");
ddList.DataSource = dt;
ddList.DataTextField = "YourCOLName";
ddList.DataValueField = "YourCOLName";
ddList.DataBind();
DataRowView dr = e.Row.DataItem as DataRowView;
//ddList.SelectedItem.Text = dr["YourCOLName"].ToString();
ddList.SelectedValue = dr["YourCOLName"].ToString();
}
}
}

edit row in gridview

I would like to help me with my code. I have 2 gridviews. In the first gridview the user can choose with a checkbox every row he wants. These rows are transfered in the second gridview. All these my code does them well.Now, I want to edit the quantity column in second gridview to change the value but i don't know what i must write in edit box.
Here is my code:
using System;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Collections;
public partial class ShowLand : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
BindPrimaryGrid();
BindSecondaryGrid();
}
}
private void BindPrimaryGrid()
{
string constr = ConfigurationManager.ConnectionStrings["conString"].ConnectionString;
string query = "select * from Land";
SqlConnection con = new SqlConnection(constr);
SqlDataAdapter sda = new SqlDataAdapter(query, con);
DataTable dt = new DataTable();
sda.Fill(dt);
gridview2.DataSource = dt;
gridview2.DataBind();
}
private void GetData()
{
DataTable dt;
if (ViewState["SelectedRecords1"] != null)
dt = (DataTable)ViewState["SelectedRecords1"];
else
dt = CreateDataTable();
CheckBox chkAll = (CheckBox)gridview2.HeaderRow
.Cells[0].FindControl("chkAll");
for (int i = 0; i < gridview2.Rows.Count; i++)
{
if (chkAll.Checked)
{
dt = AddRow(gridview2.Rows[i], dt);
}
else
{
CheckBox chk = (CheckBox)gridview2.Rows[i]
.Cells[0].FindControl("chk");
if (chk.Checked)
{
dt = AddRow(gridview2.Rows[i], dt);
}
else
{
dt = RemoveRow(gridview2.Rows[i], dt);
}
}
}
ViewState["SelectedRecords1"] = dt;
}
private void SetData()
{
CheckBox chkAll = (CheckBox)gridview2.HeaderRow.Cells[0].FindControl("chkAll");
chkAll.Checked = true;
if (ViewState["SelectedRecords1"] != null)
{
DataTable dt = (DataTable)ViewState["SelectedRecords1"];
for (int i = 0; i < gridview2.Rows.Count; i++)
{
CheckBox chk = (CheckBox)gridview2.Rows[i].Cells[0].FindControl("chk");
if (chk != null)
{
DataRow[] dr = dt.Select("id = '" + gridview2.Rows[i].Cells[1].Text + "'");
chk.Checked = dr.Length > 0;
if (!chk.Checked)
{
chkAll.Checked = false;
}
}
}
}
}
private DataTable CreateDataTable()
{
DataTable dt = new DataTable();
dt.Columns.Add("id");
dt.Columns.Add("name");
dt.Columns.Add("price");
dt.Columns.Add("quantity");
dt.Columns.Add("total");
dt.AcceptChanges();
return dt;
}
private DataTable AddRow(GridViewRow gvRow, DataTable dt)
{
DataRow[] dr = dt.Select("id = '" + gvRow.Cells[1].Text + "'");
if (dr.Length <= 0)
{
dt.Rows.Add();
dt.Rows[dt.Rows.Count - 1]["id"] = gvRow.Cells[1].Text;
dt.Rows[dt.Rows.Count - 1]["name"] = gvRow.Cells[2].Text;
dt.Rows[dt.Rows.Count - 1]["price"] = gvRow.Cells[3].Text;
dt.Rows[dt.Rows.Count - 1]["quantity"] = gvRow.Cells[4].Text;
dt.Rows[dt.Rows.Count - 1]["total"] = gvRow.Cells[5].Text;
dt.AcceptChanges();
}
return dt;
}
private DataTable RemoveRow(GridViewRow gvRow, DataTable dt)
{
DataRow[] dr = dt.Select("id = '" + gvRow.Cells[1].Text + "'");
if (dr.Length > 0)
{
dt.Rows.Remove(dr[0]);
dt.AcceptChanges();
}
return dt;
}
protected void CheckBox_CheckChanged(object sender, EventArgs e)
{
GetData();
SetData();
BindSecondaryGrid();
}
private void BindSecondaryGrid()
{
DataTable dt = (DataTable)ViewState["SelectedRecords1"];
gridview3.DataSource = dt;
gridview3.DataBind();
}
}
and the source code is
<asp:GridView ID="gridview2" runat="server" AutoGenerateColumns="False"
DataKeyNames="id" DataSourceID="SqlDataSource5">
<Columns>
<asp:TemplateField>
<HeaderTemplate>
<asp:CheckBox ID="chkAll" runat="server" onclick = "checkAll(this);"
AutoPostBack = "true" OnCheckedChanged = "CheckBox_CheckChanged"/>
</HeaderTemplate>
<ItemTemplate>
<asp:CheckBox ID="chk" runat="server" onclick = "Check_Click(this)"
AutoPostBack = "true" OnCheckedChanged = "CheckBox_CheckChanged" />
</ItemTemplate>
</asp:TemplateField>
<asp:BoundField DataField="id" HeaderText="id" InsertVisible="False"
ReadOnly="True" SortExpression="id" />
<asp:BoundField DataField="name" HeaderText="name"
SortExpression="name" />
<asp:BoundField DataField="price" HeaderText="price" SortExpression="price" />
<asp:BoundField DataField="quantity" HeaderText="quantity"
SortExpression="quantity" />
<asp:BoundField DataField="total" HeaderText="total" SortExpression="total" />
</Columns>
</asp:GridView>
<asp:SqlDataSource ID="SqlDataSource5" runat="server"
ConnectionString="<%$ ConnectionStrings:ConnectionString %>"
SelectCommand="SELECT * FROM [Land]"></asp:SqlDataSource>
<br />
</div>
<div>
<asp:GridView ID="gridview3" runat="server"
AutoGenerateColumns = "False" DataKeyNames="id"
EmptyDataText = "No Records Selected" >
<Columns>
<asp:BoundField DataField = "id" HeaderText = "id" />
<asp:BoundField DataField = "name" HeaderText = "name" ReadOnly="True" />
<asp:BoundField DataField = "price" HeaderText = "price"
DataFormatString="{0:c}" ReadOnly="True" />
<asp:TemplateField HeaderText="quantity">
<EditItemTemplate>
<asp:TextBox ID="TextBox1" runat="server" Text='<%# Bind("quantity")%>'</asp:TextBox>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="Label1" runat="server" Text='<%# Bind("quantity") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:BoundField DataField = "total" HeaderText = "total"
DataFormatString="{0:c}" ReadOnly="True" />
<asp:CommandField ShowEditButton="True" />
</Columns>
</asp:GridView>
<asp:Label ID="totalLabel" runat="server"></asp:Label>
<br />
</div>
</form>
</body>
</html>

This is not particular asp.net solution but that's how I do something like this in my Windows app.
First of all you shoul make shure that there's a selected row in your GridView (gridView.SelectedRow != null). DataTable object allows you to get access to desired row by accessing it not by numeric index but by DataRow-type object index. After getting a reference to the row which fields' value you want to modify just go ahead with changes.
Here's the example:
if (gridView.SelectedRow != null)
{
dataTable.Rows[gridView.SelectedRow].BeginEdit();
dataTable.Rows[gridView.SelectedRow]["yourFieldName"] = newValue;
dataTable.Rows[gridView.SelectedRow].EndEdit();
gridView.DataSource = dataTable;
}
Hope my answer is of any help because I've never dealt with asp.net before.

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