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How can I do a CRUD in this code without database and datatables in webforms gridview, .net core 4.7

Error on RowUpdating >> GridView 'GView' fired the RowUpdating event, which was not handled.
I put the RowEditing and I can enter to update the data, but when I put public void GView_UpdateItem(int id) {} ​​it returns the error saying GridView 'GView' triggered the RowUpdating event, which was not handled.
<asp:GridView runat="server" ID="GView" CellPadding="4" ForeColor="#333333" GridLines="None" OnRowEditing="GView_RowEditing" UpdateMethod="GView_UpdateItem">
<AlternatingRowStyle BackColor="White"></AlternatingRowStyle>
<Columns>
<asp:CommandField ShowEditButton="True"></asp:CommandField>
<asp:CommandField ShowDeleteButton="True"></asp:CommandField>
</Columns>
C# CODE
protected void Page_Load(object sender, EventArgs e)
{
}
public static List<Contato> contatos = new List<Contato>();
public void btnCad(object sender, EventArgs e)
{
Contato contato = new Contato();
contato.Id = contatos.Count;
contato.Nome = this.txtNome.Text;
contato.Idade = this.txtIdade.Text;
contato.Telefone = this.txtTelefone.Text;
contato.Genero = this.txtGenero.Text;
contato.DataCadastro = this.txtDataCad.Text;
contatos.Add(contato);
GView.DataSource = contatos;
GView.DataBind();
}
public void GView_UpdateItem(int id)
{
VoxTraining.Models.Contato item = contatos.Find(cont => cont.Id == id);
if (item == null)
{
ModelState.AddModelError("", String.Format("O item com id {0} não foi encontrado", id));
return;
}
TryUpdateModel(item);
if (ModelState.IsValid)
{
}
}
protected void GView_RowEditing(object sender, GridViewEditEventArgs e)
{
return ;
}

Ok, a few things.
Yes, we can do this without a database. We have have to persist our "list of names".
Dump the delete and edit buttons for the GV - they not worth the trouble - they don't help you.
So, we have the edit area, and the grid.
So, we have this markup:
<div id="myedit" runat="server" style="width:30%;padding:35px;display:none">
<div cssclass="form-group">
<label for="exampleInputEmail1">Nome</label>
<asp:TextBox CssClass="form-control" runat="server" ID="txtNome"></asp:TextBox>
</div>
<div cssclass="form-group">
<label for="exampleInputPassword1">Idade</label>
<asp:TextBox CssClass="form-control" runat="server" ID="txtIdade"></asp:TextBox>
</div>
<div cssclass="form-group">
<label for="exampleInputPassword1">Telefone</label>
<asp:TextBox CssClass="form-control" runat="server" ID="txtTelefone"></asp:TextBox>
</div>
<asp:Label runat="server" AssociatedControlID="txtGenero" ><b>Genero</b></asp:Label><br />
<asp:DropDownList CssClass="form-group" checked="" ID="txtGenero" runat="server" OnSelectedIndexChanged="btnCad">
<asp:ListItem Text="Masculino" />
<asp:ListItem Text="Feminino" />
</asp:DropDownList>
<div cssclass="form-group">
<label for="exampleInputPassword1">Data de Cadastro</label>
<asp:TextBox CssClass="form-control" runat="server" TextMode="Date" ID="txtDataCad"></asp:TextBox>
</div>
<br />
<asp:Button runat="server" ID="IDbtnCad" CssClass="btn" Text="Save" OnClick="btnCad" />
<asp:Button runat="server" ID="btnCancel" CssClass="btn" Text="Cancel" OnClick="btnCancel_Click"
style="margin-left:20px" />
<asp:Button runat="server" ID="btnDelete" CssClass="btn" Text="Delete" OnClick="btnCancel_Click"
style="margin-left:30px" />
</div>
<div id="MyGrid" runat="server">
<asp:Button ID="cmdNew" runat="server" Text="+Add new" CssClass="btn" OnClick="cmdNew_Click"/>
<asp:GridView runat="server" ID="GView" CellPadding="4" ForeColor="#333333" cssclass="table" Width="40%"
ShowHeaderWhenEmpty="true" >
<Columns>
<asp:TemplateField HeaderText="Edit" ItemStyle-HorizontalAlign="Center">
<ItemTemplate>
<asp:Button ID="cmdEdit" runat="server" Text="Edit" CssClass="btn" OnClick="cmdEdit_Click" />
</ItemTemplate>
</asp:TemplateField>
</Columns>
<HeaderStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White"></HeaderStyle>
</asp:GridView>
</div>
And code to load is this:
List<Contato> MyNames = new List<Contato>();
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
ViewState["MyNames"] = MyNames;
GView.DataSource = MyNames;
GView.DataBind();
}
else
MyNames = ViewState["MyNames"] as List<Contato>;
}
Note how we save the list of names.
So, we now have this:
so, add new button is thus this:
protected void cmdNew_Click(object sender, EventArgs e)
{
// add new
Contato OneName = new Contato();
MyNames.Add(OneName);
MyEdit(MyNames.Count - 1);
}
And my edit is this:
void MyEdit(int RowIndex)
{
Contato OneName = MyNames[RowIndex];
txtNome.Text = OneName.Nome;
txtIdade.Text = OneName.Idade;
txtTelefone.Text = OneName.Telefone;
txtGenero.Text = OneName.Genero;
txtDataCad.Text = OneName.DataCadastro;
ViewState["RowIndex"] = RowIndex;
// show editor, hide grid
myedit.Style.Add("Display", "nomral");
MyGrid.Style.Add("display", "none");
}
so, we hit add, and we now have this:
We hit save button, this code
protected void btnCad(object sender, EventArgs e)
{
int RowIndex = (int)ViewState["RowIndex"];
Contato OneName = MyNames[RowIndex];
OneName.Nome = this.txtNome.Text;
OneName.Idade = this.txtIdade.Text;
OneName.Telefone = this.txtTelefone.Text;
OneName.Genero = this.txtGenero.Text;
OneName.DataCadastro = txtDataCad.Text;
ViewState["MyNames"] = MyNames;
myedit.Style.Add("Display", "none");
MyGrid.Style.Add("display", "normal");
GView.DataSource = MyNames;
GView.DataBind();
}
And we now have this:
We can use add again, and now this:
the edit row button - plane jane asp.net button click.
Code is this:
protected void cmdEdit_Click(object sender, EventArgs e)
{
Button btnEdit = sender as Button;
GridViewRow gRow = btnEdit.NamingContainer as GridViewRow;
MyEdit(gRow.RowIndex);
}
So, hitting edit button, goes back to the editor.
Say like this:
Cancel button - does nothing (no save, return to grid).
Say this:
protected void btnCancel_Click(object sender, EventArgs e)
{
myedit.Style.Add("Display", "none");
MyGrid.Style.Add("display", "normal");
}
And the delete button - that would just remove the current row index item from the list.
eg:
protected void cmdDel_Click(object sender, EventArgs e)
{
myedit.Style.Add("Display", "none");
MyGrid.Style.Add("display", "normal");
int RowIndex = (int)ViewState["RowIndex"];
MyNames.RemoveAt(RowIndex);
GView.DataSource = MyNames;
GView.DataBind();
}

WebForm can't populate button command argument with list of files?

It's been a long time since I've had to work with WebForms but I'm having to update an old website. I'm trying to make a page that will allow the user to download a file to their machine. I can get the list of files in a directory as well as display it in a table, however, I'm trying to assign the file name to the command argument of a button so that I'll know the name of the file to go get in the button event. I can't seem to find the correct way to get the value out of the folder object to populate the command argument. No errors, it's just blank. Any suggestions?
var listFiles = dir.GetFiles();
<%
foreach(var file in listFiles) { %>
<tr>
<td> </td>
<td><%= file.Name %></td>
<td><%= file.Length %></td>
<td><%= file.CreationTime.ToString("MM/dd/yyyy HH:mm") %></td>
<td>
<asp:LinkButton ID="btnDownload" runat="server"
CommandArgument='<%#Eval("file.Name") %>'
CommandName="DownloadTechFile"
OnCommand="DownloadFile"
ToolTip="Downloaded file">
<span aria-hidden="true" class="fa fa-download"></span>
</asp:LinkButton>
</td>
</tr>
<% } %>
protected void DownloadFile(object sender, CommandEventArgs e)
{
Alert.Hide();
var fileName = e.CommandArgument.ToString();
var fileFullPath = Path.Combine(FileFolderPath, fileName);
if (string.IsNullOrWhiteSpace(fileName) == false)
{
WebClient req = new WebClient();
HttpResponse response = HttpContext.Current.Response;
try
{
response.Clear();
response.ClearContent();
response.ClearHeaders();
response.Buffer = true;
response.AddHeader("Content-Disposition", "attachment;filename=" + fileName);
byte[] data = req.DownloadData(fileFullPath);
//byte[] data = req.DownloadData(Server.MapPath(fileFullPath));
response.BinaryWrite(data);
response.End();
Alert.Show(AlertType.Success, "File downloaded.");
}
catch (Exception ex)
{
logger.Error("Error downloading file from {0}. {1} | {2} | {3}", fileFullPath, ex.Message, ex.StackTrace, ex.InnerException);
Alert.Show(AlertType.Error, string.Format("Error trying to download file: {0}", fileName));
}
}
}
UPDATE:
This is what I came up with in case someone else could use it.
<asp:GridView ID="gvFiles" runat="server" AutoGenerateColumns="false" CssClass="table borderless" HeaderStyle-CssClass="fileheader">
<Columns>
<asp:BoundField DataField="FileName" HeaderText="File Name" />
<asp:BoundField DataField="FileSize" HeaderText="File Size" />
<asp:BoundField DataField="Date" HeaderText="Created On" />
<asp:TemplateField HeaderText="">
<ItemTemplate>
<asp:LinkButton ID="btnDownload" runat="server"
CommandArgument='<%# Eval("FileName") %>'
OnClick="DownloadFile"
ToolTip="Downloaded file">
<span aria-hidden="true" class="fa fa-download"></span>
</asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
void LoadGrid()
{
// create a table for the files, populate, and then bind.
DataTable dtFiles = new DataTable();
dtFiles.Columns.Add("Date", typeof(string));
dtFiles.Columns.Add("FileSize", typeof(string));
dtFiles.Columns.Add("FileName", typeof(string));
DirectoryInfo fileDirectory = new DirectoryInfo(FileFolderPath);
foreach (FileInfo file in fileDirectory.GetFiles("*.txt"))
{
DataRow dr = dtFiles.NewRow();
dr["Date"] = file.CreationTime.ToString("MM/dd/yyyy HH:mm");
dr["FileSize"] = Utility.GetBytesReadable(file.Length);
dr["FileName"] = file.Name;
dtFiles.Rows.Add(dr);
}
dtFiles.DefaultView.Sort = "Date DESC";
gvFiles.DataSource = dtFiles;
gvFiles.DataBind();
}
protected void DownloadFile(object sender, EventArgs e)
{
var fileName = (sender as LinkButton).CommandArgument;
var fileFullPath = Path.Combine(FileFolderPath, fileName);
string mineType = MimeMapping.GetMimeMapping(fileFullPath);
if (string.IsNullOrWhiteSpace(fileName) == false)
{
byte[] binFile = File.ReadAllBytes(fileFullPath);
Response.ContentType = mineType;
Response.AppendHeader("Content-Disposition", "attachment; filename=" + fileName);
Response.BinaryWrite(binFile);
Response.End();
}
}

You can say use a gridview, and say like this:
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false" CssClass="table">
<Columns>
<asp:BoundField DataField="File Name" HeaderText="File" />
<asp:BoundField DataField="Date" HeaderText="Date" />
<asp:BoundField DataField="File Size" HeaderText="Size" />
<asp:TemplateField HeaderText="Select" ItemStyle-HorizontalAlign="Center">
<ItemTemplate>
<asp:HyperLink ID="HyperLink1" runat="server" CssClass="btn btn-default"
NavigateUrl='<%# Eval("Path") %>' >Down Load</asp:HyperLink>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
And code behind can be this:
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
LoadGrid();
}
void LoadGrid()
{
// create a table for the files
DataTable MyTable = new DataTable();
MyTable.Columns.Add("Date", typeof(string));
MyTable.Columns.Add("File Size", typeof(string));
MyTable.Columns.Add("File Name", typeof(string));
MyTable.Columns.Add("Path", typeof(string));
string strURLFolder = "~/Content/Animals/";
string strFolder = Server.MapPath(strURLFolder);
DirectoryInfo MyDir = new DirectoryInfo(strFolder);
FileInfo[] MyFiles = MyDir.GetFiles("*.*");
foreach (FileInfo MyFile in MyDir.GetFiles("*.*"))
{
DataRow OneRow = MyTable.NewRow();
OneRow["Date"] = MyFile.LastAccessTime;
OneRow["File Size"] = (MyFile.Length / 1024).ToString() + " KB";
OneRow["File Name"] = MyFile.Name;
OneRow["Path"] = strURLFolder + MyFile.Name;
MyTable.Rows.Add(OneRow);
}
MyTable.DefaultView.Sort = "Date";
GridView1.DataSource = MyTable;
GridView1.DataBind();
}
And now we get this:
Now, I suppose you could replace the "hyper-link" with a button, and perhaps read the files as byte stream, and send that to the client, but above should get you started here.
Edit: The user notes they don't want to use a hyper-link (simple link) to the file.
So, we can do it this way:
We drop in a plane jane button into the grid (why then suggest, hint, talk about a "link" when you NOW stated you DO NOT want to use a link? - are we giving out awards for confusing here?).
If you don't want a link, then obviously we don't need nor want to care about, and talk about links then right?????
Ok, so lets remove the hyper link, and drop in a plane jane button into the grid view like this:
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false" CssClass="table">
<Columns>
<asp:BoundField DataField="File Name" HeaderText="File" />
<asp:BoundField DataField="Date" HeaderText="Date" />
<asp:BoundField DataField="File Size" HeaderText="Size" />
<asp:TemplateField HeaderText="Select" ItemStyle-HorizontalAlign="Center">
<ItemTemplate>
<asp:Button ID="cmdDownLoad" runat="server" Text="Download" cssclass="btn"
OnClick="cmdDownLoad_Click" />
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
So, code to load as before, and now we get/have this:
protected void cmdDownLoad_Click(object sender, EventArgs e)
{
Button btn = sender as Button;
GridViewRow gRow = btn.NamingContainer as GridViewRow;
string sFileOnly = gRow.Cells[0].Text;
string sFile = Server.MapPath("~/Content/Animals/" + sFileOnly);
string sMineType = MimeMapping.GetMimeMapping(sFile);
byte[] binFile = File.ReadAllBytes(sFile);
Response.ContentType = sMineType;
Response.AppendHeader("Content-Disposition", "attachment; filename=" + sFileOnly);
Response.BinaryWrite(binFile);
Response.End();
}
So, we should see say this:

How to get selected each radio button value in datalist?

In below datalist represents set of question's and answer.
How to insert the user selected right answer radio button value into database when the user clicks on Final submit button?
<asp:DataList ID="DataList1" runat="server" DataSourceID="AccessDataSource1" BackColor="White" BorderColor="#E7E7FF" BorderStyle="None" BorderWidth="1px" CellPadding="3" GridLines="Horizontal" onselectedindexchanged="rd_CS_CheckedChanged">
<FooterStyle BackColor="#B5C7DE" ForeColor="#4A3C8C" />
<AlternatingItemStyle BackColor="#F7F7F7" />
<ItemStyle BackColor="#E7E7FF" ForeColor="#4A3C8C" />
<SelectedItemStyle BackColor="#738A9C" Font-Bold="True" ForeColor="#F7F7F7" />
<HeaderStyle BackColor="#4A3C8C" Font-Bold="True" ForeColor="#F7F7F7" />
<ItemTemplate>
Q:
<asp:Label ID="QLabel" runat="server" Text='<%# Eval("Q") %>' />
<br />
A:
<asp:RadioButton ID="rd_CS" runat="server" GroupName="Casi" OnCheckedChanged="rd_CS_CheckedChanged" Text='<%# Eval("A") %>'></asp:RadioButton>
<br />
B:
<asp:RadioButton ID="rd_CS2" runat="server" GroupName="Casi" OnCheckedChanged="rd_CS_CheckedChanged" Text='<%# Eval("B") %>'></asp:RadioButton>
<br />
C:
<asp:RadioButton ID="rd_CS3" runat="server" GroupName="Casi" OnCheckedChanged="rd_CS_CheckedChanged" Text='<%# Eval("C") %>'></asp:RadioButton>
<br />
D:
<asp:RadioButton ID="rd_CS4" runat="server" GroupName="Casi" OnCheckedChanged="rd_CS_CheckedChanged" Text='<%# Eval("D") %>'></asp:RadioButton>
<p style="color: #FF3300">
<asp:Label ID="Correct_AnswerLabel" runat="server"
Text='<%# Eval("Correct_Answer") %>' Visible="False" /></p>
</ItemTemplate>
<SelectedItemStyle BackColor="#FFCC66" Font-Bold="True" ForeColor="#663399" />
</asp:DataList>
<asp:AccessDataSource ID="AccessDataSource1" runat="server"
DataFile="~/App_Data/Quize.mdb"
SelectCommand="SELECT [Q],[A], [B], [C], [D], [Correct Answer] AS Correct_Answer FROM [QuizData]">
</asp:AccessDataSource>
<asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="Button" />

In Button1_Click on your codebehind you can improve this method:
protected void Button1_Click(object sender, EventArgs e)
{
foreach (DataListItem item in DataList1.Items)
{
RadioButton rd_CS = (RadioButton)item.FindControl("rd_CS");
RadioButton rd_CS2 = (RadioButton)item.FindControl("rd_CS2");
RadioButton rd_CS3 = (RadioButton)item.FindControl("rd_CS3");
RadioButton rd_CS4 = (RadioButton)item.FindControl("rd_CS4");
if (rd_CS.Checked)
{
Insert(rd_CS.Text); //Here you can insert whatever value you want, I tried with Text of radiobutton
}
if (rd_CS2.Checked)
{
Insert(rd_CS2.Text); //Here you can insert whatever value you want, I tried with Text of radiobutton
}
if (rd_CS3.Checked)
{
Insert(rd_CS3.Text); //Here you can insert whatever value you want, I tried with Text of radiobutton
}
if (rd_CS4.Checked)
{
Insert(rd_CS4.Text); //Here you can insert whatever value you want, I tried with Text of radiobutton
}
}
}
And the Insert function definition will be same as:
private void Insert(string value)
{
//Your code here to save on database
OleDbConnection connection = new OleDbCommand("Your sql connection String");
OleDbCommand command = new OleDbCommand("Your sql insert query");
command.Connection = connection;
//Parámeters of command
OleDbParameter param = new OleDbParameter("Parameter name and next your type", OleDbType.VarChar);
param.Value = value;
command.Parameters.Add(param);
command.Connection.Open();
command.ExecuteNonQuery();
command.Connection.Close();
//Your value is saved now
}
This is how you can save all checked radiobutton on datalist you asked

This is my codebehind .When i click on button then Repeated selected radio button values are save in my database . this is my problem. I need only unique value in my database
protected void rd_CS_CheckedChanged(object sender, EventArgs e)
{
string myRadioText = String.Empty;
foreach (DataListItem item in DataList1.Items)
{
RadioButton rd_CS = (RadioButton)item.FindControl("rd_CS");
RadioButton rd_CS2 = (RadioButton)item.FindControl("rd_CS2");
RadioButton rd_CS3 = (RadioButton)item.FindControl("rd_CS3");
RadioButton rd_CS4 = (RadioButton)item.FindControl("rd_CS4");
if (rd_CS != null && rd_CS.Checked)
{
myRadioText = rd_CS.Text;
Label1.Text = myRadioText.ToString();
}
else if (rd_CS2 != null && rd_CS2.Checked)
{
myRadioText = rd_CS2.Text;
Label1.Text = myRadioText.ToString();
}
else if (rd_CS3 != null && rd_CS3.Checked)
{
myRadioText = rd_CS3.Text;
Label1.Text = myRadioText.ToString();
}
else if (rd_CS4 != null && rd_CS4.Checked)
{
myRadioText = rd_CS4.Text;
Label1.Text = myRadioText.ToString();
}
string str = Server.MapPath("~/App_Data/Quize.mdb");
OleDbConnection ole = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + str + ";Persist Security Info=True");
ole.Open();
OleDbCommand cmd = new OleDbCommand("insert into Userdata values ('" + Label1.Text.Trim().Replace("'", "''") + "','" + Label1.Text.Trim().Replace("'", "''") + "',)", ole);
cmd.ExecuteNonQuery();
}

How can I create a gridview(Itemcommand and deletecommand), button and textbox dynamically and handle click events

I am about to develop a web application which is used to search and fetch the data from the database as per the criteria which we enter in textboxes.
I have from place and to place once we enter the data in either textbox and hit search button it will fetch data from database and display in textbox (dynamic).
Eg:
if I enter a place kolkata and hit enter then it will count the total no of records that has the from place kolkatta. If count is 3 then 3 textboxes, 3 buttons (add) and 3 gridviews should be created dynamically. Then if we click the add button it will redirect to next page.
I have created a textbox and a button but I'm unable to create 3 gridviews and also click event for the button is not firing.
Here is my code for creating controls dynamically on search button click:
protected void BTNSearch_Click(object sender, EventArgs e)
{
if(Convert.ToInt32( Session["Count"])>0)
{
if (Flag != "")
{
LoadControls(Flag);
}
}
}
private void LoadControls(string Flag)
{
LocationName.Clear();
Session["Flag"] = Flag;
Updatesearch.Update();
dynamicTextBoxes = new TextBox[Convert.ToInt32(Session["Count"])];
dynamicButtons = new Button[Convert.ToInt32(Session["Count"])];
dynamicGV = new GridView[Convert.ToInt32(Session["Count"])];
int i;
if (Flag == "L")
{
sql = "Select PortOfDischargeName from VW_TransAIHBLMasterUpdateDetails where tBLG_NUIsActive=1 and PortOfLoadName='" + Session["Loading"].ToString() + "' group by PortOfDischargeName";
}
else if (Flag == "D")
{
sql = "Select PortOfLoadName from VW_TransAIHBLMasterUpdateDetails where tBLG_NUIsActive=1 and PortOfDischargeName='" + Session["Destination"].ToString() + "' group by PortOfLoadName";
}
else
{
sql = "";
}
SqlDataReader rdr = mobjGenlib.objDBLib.ExecuteQueryReader(sql.ToString());
while (rdr.Read())
{
LocationName.Add(rdr.GetValue(0).ToString());
}
rdr.Close();
for (i = 0; i < Convert.ToInt32(Session["Count"]); i += 1)
{
TextBox textBox = new TextBox();
textBox.ID = "myTextBox" + i.ToString();
textBox.Width = 200;
textBox.Height = 15;
//textBox.Text = String.Empty;
textBox.Text = LocationName[i].ToString();
textBox.BackColor = System.Drawing.Color.AliceBlue;
myPlaceHolder.Controls.Add(textBox);
dynamicTextBoxes[i] = textBox;
var button = new Button();
button.ID = "BtnAdd" + i.ToString();
button.Text = "Add";
//button.Click += button_Click;
button.Click += new System.EventHandler(button_click);
//btn.Click += new EventHandler(btn_Click);
myPlaceHolder.Controls.Add(button);
dynamicButtons[i] = button;
ViewState["Btn"] = dynamicButtons[i];
LiteralControl literalBreak = new LiteralControl("<br />");
myPlaceHolder.Controls.Add(literalBreak);
gv.ID = "gridview" + i;
myPlaceHolder.Controls.Add(gv);
dynamicGV[i] = gv;
BindGrid(textBox.Text, Flag, i);
LiteralControl literalBreak1 = new LiteralControl("<br />");
myPlaceHolder.Controls.Add(literalBreak1);
}
}
This is for button click:
protected void button_click(object sender, EventArgs e)
{
Button btn = (Button)sender;
foreach (Button bt in dynamicButtons)
{
for (int i = 0; i < Convert.ToInt32(Session["Count"]); i++)
{
if (btn.ID == ("BtnAdd" + i))
{
Response.Redirect("FrmTransLCLConsolidation.aspx");
break;
}
}
}
}
**
> i dont know how to write code to the Datagrid onitemcommand and > ondeletecommand.
**
Can anyone help me to achieve this? Thanks in advance.
another issue:
aspx page:
<asp:Repeater runat="server" OnItemDataBound="repeaterSearchResult_ItemDataBound" ID="repeaterSearchResult">
<ItemTemplate>
<asp:Label ID="textBoxSearch" ForeColor="White" width="25%" runat="server" Text="<%#Container.DataItem%>"></asp:Label>
<%--<asp:TextBox ID="textBoxSearch" runat="server" Text="<%#Container.DataItem%>"></asp:TextBox>--%>
<asp:Button ID="BTNAdd" runat="server" Text="Add" OnClick="button_click"/><br />
<asp:DataGrid ID="dgLCL" runat="server" BorderWidth="1px" BorderColor="#FE9B00"
BorderStyle="Solid" BackColor="White" Font-Names="Verdana" Font-Size="XX-Small"
AutoGenerateColumns="False" ShowFooter="FALSE" CellPadding="3" align="center"
Width="700px" OnItemCommand="dgLCL_Select" OnDeleteCommand="dgLCL_Delete">
<FooterStyle ForeColor="#000066" BackColor="White"></FooterStyle>
<SelectedItemStyle Font-Bold="True" ForeColor="Black" BackColor="Snow"></SelectedItemStyle>
<EditItemStyle BackColor="AntiqueWhite"></EditItemStyle>
<PagerStyle BackColor="#FDE9CB" ForeColor="#003399" HorizontalAlign="Right" Mode="NumericPages"
Position="Bottom" Font-Size="Small" Font-Bold="true" />
<AlternatingItemStyle BackColor="Snow"></AlternatingItemStyle>
<ItemStyle ForeColor="#000066" BackColor="Snow"></ItemStyle>
<HeaderStyle Font-Size="XX-Small" Font-Bold="True" Height="10px" ForeColor="#000000"
BackColor="#FFDBA6"></HeaderStyle>
<Columns>
<asp:TemplateColumn>
<ItemTemplate>
<asp:ImageButton runat="server" ID="IMGBTNAdd" ImageUrl="~/AppImages/grid-icon-add.jpg"
ToolTip="Insert" CommandName="SelectItem" AlternateText="Insert" />
</ItemTemplate>
</asp:TemplateColumn>
<asp:BoundColumn DataField="MasterNo" HeaderText="MasterNo"></asp:BoundColumn>
<asp:BoundColumn DataField="MasterDate" HeaderText="MasterDate"></asp:BoundColumn>
<asp:BoundColumn DataField="GrossWt" HeaderText="GrossWt"></asp:BoundColumn>
<asp:BoundColumn DataField="GrossUOMType" HeaderText="Type"></asp:BoundColumn>
<asp:BoundColumn DataField="Volume" HeaderText="Volume"></asp:BoundColumn>
<asp:TemplateColumn HeaderText="DELETE">
<ItemTemplate>
<asp:ImageButton runat="server" ID="IMGBTNDelete" ImageUrl="~/AppImages/grid-icon-delete.jpg"
ToolTip="Delete" CommandName="DeleteItem" OnClientClick="javascript:return confirmDelete();"
AlternateText="Delete" />
</ItemTemplate>
</asp:TemplateColumn>
</Columns>
<PagerStyle HorizontalAlign="Left" ForeColor="#000066" BackColor="White" Mode="NumericPages">
</PagerStyle>
</asp:DataGrid><br />
</ItemTemplate>
</asp:Repeater>

Repeater is a good candidate for this problem. Instead of adding the textboxes dynamically use a repeater control here, which is then easier to maintain.
Below is the outline of what you can do.
<asp:Repeater runat="server" OnItemDataBound="repeaterSearchResult_ItemDataBound" ID="repeaterSearchResult">
<ItemTemplate>
<asp:TextBox ID="textBoxSearch" runat="server" Text="<%#Container.DataItem%>"></asp:TextBox>
<asp:Button ID="buttonAdd" runat="server" Text="Button" OnClick="button_click"/>
<asp:GridView ID="gridView" runat="server">
<%--Add the Columns you want to display--%>
</asp:GridView>
</ItemTemplate>
</asp:Repeater>
In your code, after getting the search result from the data reader, instead of creating the textbox and buttons, bind the result to the repeater
SqlDataReader rdr = mobjGenlib.objDBLib.ExecuteQueryReader(sql.ToString());
while (rdr.Read())
{
LocationName.Add(rdr.GetValue(0).ToString());
}
rdr.Close();
repeaterSearchResult.DataSource = LocationName;
repeaterSearchResult.DataBind();
In the repeaters OnItemDataBound, bind the grid view
protected void repeaterSearchResult_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
GridView gv = e.Item.FindControl("gridView") as GridView;
TextBox textBox = e.Item.FindControl("textBoxSearch") as TextBox;
if (gv != null)
{
//Bind gridview here
}
}
In the button click event you can redirect to the page. You can also use the command argument for the button to identify the current index if you want.
Further to your question to open a new form you can use the following method.
In your image button add onclientclick event as below.
<asp:ImageButton runat="server" OnClientClick="return openNewForm();" ID="IMGBTNAdd" ImageUrl="~/AppImages/grid-icon-add.jpg"
ToolTip="Insert" CommandName="SelectItem" AlternateText="Insert" />
Then add a javascript function to open the popup
<script type="text/javascript">
function openNewForm() {
window.open("url for the new form", "newForm", "menubar=0,resizable=1,location=0,status=0,scrollbars=1,height=500,width=600");
return false;
}
</script>

C# DataGrid update function

Currently I'm having trouble in update function for DataGrid. It is unable capture my input in the DataGrid.
Is there a way to capture my input by using DataGrid? Because most of the information internet using GridView which is different.
Edited:
This is a DataGrid with Update, Edit and delete function.
For example,
I select a row of data and press on Edit button, fill in the data on the selected row, then press on Update button to update the selected row information.
In this situation I am unable to capture the selected row information after edited.
So, I am unable to update the row data.
Here's the Code for HTML
<asp:DataGrid ID="dgRecords" runat="server" Width="100%" DataKeyField="InsitePriceID"
AllowPaging="True" AllowSorting="True" AutoGenerateColumns="False" CellPadding="5"
OnPageIndexChanged="dgRecords_PageIndexChanged" OnSortCommand="dgRecords_SortCommand"
OnDeleteCommand="dgRecords_OnDelete" OnEditCommand="dgRecords_OnEdit" OnUpdateCommand="dgRecords_OnUpdate"
OnCancelCommand="dgRecords_OnCancel">
<AlternatingItemStyle CssClass="Data"></AlternatingItemStyle>
<ItemStyle CssClass="Data"></ItemStyle>
<HeaderStyle CssClass="ColHeader"></HeaderStyle>
<Columns>
<asp:BoundColumn Visible="False" DataField="InsitePriceID"></asp:BoundColumn>
<asp:BoundColumn DataField="ServicePartFrom" HeaderText="No. of Service Part (From)"
SortExpression="ServicePartFrom"></asp:BoundColumn>
<asp:BoundColumn DataField="ServicePartTo" HeaderText="No. of Service Part (To)"
SortExpression="ServicePartTo"></asp:BoundColumn>
<asp:BoundColumn DataField="BaseAmount" HeaderText="% from Base Amount" SortExpression="BaseAmount">
</asp:BoundColumn>
<asp:EditCommandColumn ButtonType="PushButton" CancelText="Cancel" EditText="Edit"
UpdateText="Update"></asp:EditCommandColumn>
<asp:ButtonColumn ButtonType="PushButton" CommandName="Delete" Text="Delete"></asp:ButtonColumn>
</Columns>
<PagerStyle Mode="NumericPages"></PagerStyle>
</asp:DataGrid>
<td style="width: 1014px">
<asp:Label ID="lbla" runat="server"></asp:Label>
<asp:Label ID="lblb" runat="server"></asp:Label>
<asp:Label ID="lblc" runat="server"></asp:Label>
</td>
Code behind.
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
ucWScr.SetValue("Insite Price");
pnlMsg.Visible = false;
BindData("");
}
}
private void BindData(string _sortExpression)
{
clsAdmin obj = new clsAdmin();
int intNoRec = 0;
DataTable tbl = obj.SearchInsitePrice();
}
protected void dgRecords_OnUpdate(object source, DataGridCommandEventArgs e)
{
if (e.CommandName == "Update")
{
string strInsitePriceID = dgRecords.DataKeys[e.Item.ItemIndex].ToString();
//Error start from here
lbla.Text = e.Item.Cells[1].Text;
lblb.Text = e.Item.Cells[2].Text;
lblc.Text = e.Item.Cells[3].Text;
int intServicePartFrm = Int32.Parse(lbla.Text);
int intServicePartTo = Int32.Parse(lblb.Text);
int fltPercentBaseAmt = Int32.Parse(lblc.Text);
//Error ends here
string strUserLogin = CurrentUser.UserLogin.ToString();
DateTime dteNow = DateTime.Now;
if (strInsitePriceID != "")
{
EStatus status = webform.UpdateInsitePrice(strInsitePriceID, intServicePartFrm, intServicePartTo, fltPercentBaseAmt, strUserLogin, dteNow);
if (status != EStatus.Success) throw new Exception("Update failed.");

I solve the problem by using this method.
protected void dgRecords_OnUpdate(object source, DataGridCommandEventArgs e)
{
if (e.CommandName == "Update")
{
string strInsitePriceID = dgRecords.DataKeys[e.Item.ItemIndex].ToString();
TextBox temp, temp2, temp3;
temp = (TextBox)e.Item.Cells[1].Controls[0];
temp2 = (TextBox)e.Item.Cells[2].Controls[0];
temp3 = (TextBox)e.Item.Cells[3].Controls[0];
int intServicePartFrm = Int32.Parse(temp.Text);
int intServicePartTo = Int32.Parse(temp2.Text);
int fltPercentBaseAmt = Int32.Parse(temp3.Text);