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How can I get the row selected in my gridview to display in my text boxes?

I have got a Gridview that display's only certain columns from the database table. There is a select button and delete button in my GridView as well.
This is the code for the GridView
<asp:GridView ID="GridViewClient" runat="server" DataKeyNames="FirstName"
OnSelectedIndexChanged="GridViewClient_SelectedIndexChanged"
OnRowDeleting="GridViewClient_RowDeleting">
<Columns>
<asp:CommandField HeaderText="Update" ShowSelectButton="True" />
<asp:CommandField HeaderText="Delete" ShowDeleteButton="True" />
</Columns>
</asp:GridView>
Then when the user selects the select button it should then display the entire table in the text boxes.
This is the code for the select button:
protected void GridViewClient_SelectedIndexChanged(object sender, EventArgs e)
{
EditClient.Visible = true;
GridViewRow row = GridViewClient.SelectedRow;
string constr = #"string";
using (SqlConnection con = new SqlConnection(constr))
{
using (SqlCommand cmd = new SqlCommand("SELECT * FROM tbl_newclient"))
{
cmd.CommandType = CommandType.Text;
cmd.Connection = con;
con.Open();
using (SqlDataReader sdr = cmd.ExecuteReader())
{
sdr.Read();
txtFirstName.Text = sdr["FirstName"].ToString();
txtLastName.Text = sdr["LastName"].ToString();
txtContactNumber.Text = sdr["ContactNumber"].ToString();
txtEmailAddress.Text = sdr["EmailAddress"].ToString();
txtAddress.Text = sdr["Address"].ToString();
txtRestrictions.Text = sdr["Restrictions"].ToString();
txtThirdPartySupport.Text = sdr["ThirdPartySupport"].ToString();
txtBasicNotes.Text = sdr["BasicNotes"].ToString();
}
con.Close();
}
}
Update.Visible = true;
}
The texboxes are hidden on page load and will only be visible on select
What happens now is that when I click on the select button on any row the first row of the GridView displays in the text box?
I am not sure what I am doing wrong here?
Thanks

I don't fully understand what you are asking as i can't see all your code but i think the issue may be that you are only reading the first row with the data reader. you could try something like this
using (SqlDataReader sdr = cmd.ExecuteReader())
{
if (sdr.HasRows)
{
while (sdr.Read())
{
//I'm not sure what you want to do here? i've just addede to the existing text in the textbox
txtFirstName.Text += sdr["FirstName"].ToString();
txtLastName.Text += sdr["LastName"].ToString();
txtContactNumber.Text += sdr["ContactNumber"].ToString();
txtEmailAddress.Text += sdr["EmailAddress"].ToString();
txtAddress.Text += sdr["Address"].ToString();
txtRestrictions.Text += sdr["Restrictions"].ToString();
txtThirdPartySupport.Text += sdr["ThirdPartySupport"].ToString();
txtBasicNotes.Text += sdr["BasicNotes"].ToString();
}
}
}

I guess you have primarykey of table tbl_newclient in your Gridview. Then on select take the primary key from gridview and append a where condition on your sql query then it should return the desired data.
protected void GridViewClient_SelectedIndexChanged(object sender, EventArgs e)
{
EditClient.Visible = true;
var primarykey = GridViewClient.SelectedRow.Cells[0].Text; // 0 cell index primary key
string constr = #"string";
using (SqlConnection con = new SqlConnection(constr))
{
using (SqlCommand cmd = new SqlCommand("SELECT * FROM tbl_newclient where yourprimarykey=#primarykey"))
{
cmd.Parameters.AddWithValue("#primarykey", primarykey);
cmd.CommandType = CommandType.Text;
cmd.Connection = con;
con.Open();
using (SqlDataReader sdr = cmd.ExecuteReader())
{
if (sdr.HasRows)
{
while (sdr.Read())
{
txtFirstName.Text = sdr["FirstName"].ToString();
txtLastName.Text = sdr["LastName"].ToString();
txtContactNumber.Text = sdr["ContactNumber"].ToString();
txtEmailAddress.Text = sdr["EmailAddress"].ToString();
txtAddress.Text = sdr["Address"].ToString();
txtRestrictions.Text = sdr["Restrictions"].ToString();
txtThirdPartySupport.Text = sdr["ThirdPartySupport"].ToString();
txtBasicNotes.Text = sdr["BasicNotes"].ToString();
}
}
}
con.Close();
}
}
Update.Visible = true;
}

Change DateFormat of dropdown inside gridview

I have a dropdown inside a asp gridview to Filter based on the selected dates. But when I make a selection on the dropdown I get an error, MySql.Data.MySqlClient.MySqlException: Incorrect date value: '9/12/2018 12:00:00 AM' for column 'dateValue' at row 1.
Below would be the client side code:
<asp:GridView ID="gdvTM" runat="server" AutoGenerateColumns="False" ShowHeaderWhenEmpty="true" AllowPaging="true" OnPageIndexChanging="gdvTM_PageIndexChanging" DataKeyNames="ID" PageSize="10" CssClass="cssgridview" AlternatingRowStyle-BackColor="#d5d8dc" >
<Columns >
<asp:TemplateField>
<HeaderTemplate>
Date:
<asp:Label ID="lbldate" Text="date" Visible="false" runat="server"></asp:Label>
<asp:DropDownList ID="ddlgvdate" DataTextFormatString="{0:yyyy-MM-dd}" runat="server" OnSelectedIndexChanged="DropDownChange" AutoPostBack="true" AppendDataBoundItems="true">
</asp:DropDownList>
</HeaderTemplate>
<ItemTemplate >
<asp:Label ID="lbldate1" runat="server" Text='<%# Eval("date", "{0:yyyy-MM-dd}") %>'></asp:Label>
</ItemTemplate>
</Columns>
</asp:GridView>
Below would be the server side code:
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
BindGrid();
}
}
private void BindDropDownList()
{
PopulateDropDown((cells.FindControl("ddlgvdate") as DropDownList), (cells.FindControl("lbldate") as Label).Text);
}
private void PopulateDropDown(DropDownList ddl, string columnName)
{
ddl.DataSource = BindDropDown(columnName);
ddl.DataTextField = columnName;
ddl.DataValueField = columnName;
ddl.DataBind();
ddl.Items.Insert(0, new ListItem("Please Select", "0"));
}
private void BindGrid()
{
DataTable dt = new DataTable();
String strConnString = System.Configuration.ConfigurationManager.ConnectionStrings["connStr"].ConnectionString;
MySqlConnection con = new MySqlConnection(strConnString);
MySqlDataAdapter sda = new MySqlDataAdapter();
MySqlCommand cmd = new MySqlCommand("GetApprovedData1");
cmd.CommandType = CommandType.StoredProcedure;
string date = null;
DateTime dateValue1 = Convert.ToDateTime(date);
string dateValue = dateValue1.ToString("yyyy-MM-dd");
dateValue = null;
if (ViewState["Date"] != null && ViewState["Date"].ToString() != "0")
{
dateValue = ViewState["Date"].ToString();
}
cmd.Parameters.AddWithValue("dateValue", dateValue);
cmd.Connection = con;
sda.SelectCommand = cmd;
sda.Fill(dt);
gdvTM.DataSource = dt;
int i = dt.Rows.Count;
gdvTM.DataBind();
this.BindDropDownList();
TableCell cell = gdvTM.HeaderRow.Cells[0];
setDropdownselectedItem(ViewState["Date"] != null ? (string)ViewState["Date"] : string.Empty, cell.FindControl("ddlgvdate") as DropDownList);
}
private void setDropdownselectedItem(string selectedvalue, DropDownList ddl)
{
if (!string.IsNullOrEmpty(selectedvalue))
{
ddl.Items.FindByValue(selectedvalue).Selected = true;
}
}
protected void DropDownChange(object sender, EventArgs e)
{
DropDownList dropdown = (DropDownList)sender;
string selectedValue = dropdown.SelectedItem.Value;
switch (dropdown.ID.ToLower())
{
case "ddlgvdate":
ViewState["Date"] = selectedValue;
break;
}
this.BindGrid();
}
private DataTable BindDropDown(string columnName)
{
String strConnString = System.Configuration.ConfigurationManager.ConnectionStrings["connStr"].ConnectionString;
MySqlConnection con = new MySqlConnection(strConnString);
MySqlCommand cmd = new MySqlCommand("SELECT DISTINCT (" + columnName + ") FROM approved WHERE " + columnName + " IS NOT NULL", con);
MySqlDataAdapter sda = new MySqlDataAdapter(cmd);
DataTable dt = new DataTable();
sda.Fill(dt);
return dt;
}
Below would be the MySql stored procedure:
CREATE DEFINER=`root`#`localhost` PROCEDURE `GetApprovedData1`
(in dateValue date)
BEGIN
SELECT *
FROM approved
WHERE
(dateValue IS NULL OR date = dateValue);
END
Please let me know how I can pass the date with the right format. Thanks in advance.

Thanks for John's suggestion I figured it out by using Nullable DateTime as shown below
private void BindGrid()
{
DataTable dt = new DataTable();
String strConnString = System.Configuration.ConfigurationManager.ConnectionStrings["connStr"].ConnectionString;
MySqlConnection con = new MySqlConnection(strConnString);
MySqlDataAdapter sda = new MySqlDataAdapter();
MySqlCommand cmd = new MySqlCommand("GetApprovedData1");
cmd.CommandType = CommandType.StoredProcedure;
DateTime? dateValue = null;
if (ViewState["Date"] != null && ViewState["Date"].ToString() != "0")
{
dateValue = DateTime.Parse(ViewState["Date"].ToString());
}
cmd.Parameters.AddWithValue("dateValue", dateValue);
cmd.Connection = con;
sda.SelectCommand = cmd;
sda.Fill(dt);
gdvTM.DataSource = dt;
int i = dt.Rows.Count;
gdvTM.DataBind();
this.BindDropDownList();
TableCell cell = gdvTM.HeaderRow.Cells[0];
setDropdownselectedItem(ViewState["Date"] != null ? (string)ViewState["Date"] : string.Empty, cell.FindControl("ddlgvdate") as DropDownList);
}

Asp.Net finding in Code-behind edited values in GridView with autogenerated columns

I am trying to create a user control of a gridview that will be able to display, edit and delete records, being bound to any datatable.
In my user control I have:
<asp:GridView ID="EditableGrid" runat="server" Width="500px" Height="500px" AllowSorting="True"
AutoGenerateColumns = "true"
AutoGenerateDeleteButton ="true" AutoGenerateEditButton="true"
OnRowEditing="EditableGrid_RowEditing"
OnRowCancelingEdit="EditableGrid_RowCancelingEdit"
OnRowUpdating="EditableGrid_RowUpdating"
OnRowDeleting="EditableGrid_RowDeleting"
></asp:GridView>
In my code behind I have:
public void InitGrid(string theconnstr, string thetablename)
{
connstr = theconnstr;
tablename = thetablename;
// Session["edgconnstr"] = connstr;
// Session["edgtablename"] = tablename;
con = new SqlConnection(connstr);
con.Open();
using (SqlCommand cmd = new SqlCommand())
{
cmd.Connection = con;
cmd.CommandText = "SELECT * FROM " + tablename;
using (SqlDataReader rd = cmd.ExecuteReader())
{
if (!rd.HasRows) return;
fields = new List<EdField>();
for (int i =0; i < rd.FieldCount; i++)
{
fields.Add(new EdField(rd.GetName(i), rd.GetDataTypeName(i)));
}
}
}
con.Close();
}
public void Bind()
{
// connstr = (String)Session["edgconnstr"];
// tablename = (String)Session["edgtablename"];
con = new SqlConnection(connstr);
con.Open();
using (SqlCommand cmd = new SqlCommand())
{
cmd.Connection = con;
cmd.CommandText = "SELECT * FROM " + tablename;
using (SqlDataAdapter da = new SqlDataAdapter(cmd))
{
using (DataTable dt = new DataTable())
{
da.Fill(dt);
EditableGrid.DataSource = dt;
EditableGrid.DataBind();
EditableGrid.Visible = true;
}
}
}
con.Close();
}
protected void EditableGrid_RowEditing(object sender, GridViewEditEventArgs e)
{
EditableGrid.EditIndex = e.NewEditIndex;
Bind();
}
protected void EditableGrid_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
{
EditableGrid.EditIndex = -1;
Bind();
}
protected void EditableGrid_RowCommand(object sender, GridViewCommandEventArgs e)
{
}
protected void EditableGrid_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
}
Now I have tried with no success to find the new values of the edited row in the EditableGrid_RowUpdating event handler. I just do not have access to the textboxes, and therefore I cannot run the query to update the old values to the new value. Is what I want to achieve even possible?

Use the e.NewValues Collection.
protected void EditableGrid_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
int tx = Convert.ToInt32(e.NewValues[0]);
}

how to get column data when check box is checked using data list in asp.net

this is eswar.k , i have one problem in asp.net..that is ..
i have one datalist .that is shows data from database ..that is contains .check box,image,and lables..here what is the problem .. when i am checked on check box ,i have to display the email labels into the text box..(like multiple recipients eg:eswar#gmil.com,eee#yahoo.in..etc )
protected void Page_Load(object sender, EventArgs e)
{
DataTable dt = new DataTable();
string strconnstring = System.Configuration.ConfigurationManager.ConnectionStrings["sqlcon"].ConnectionString;
string strquery = "select chid,chname,chlanguage,chrating,chemail,contenttype,data from tbl_channel_join Order by chid";
SqlCommand cmd = new SqlCommand(strquery);
SqlConnection con = new SqlConnection(strconnstring);
SqlDataAdapter sda = new SqlDataAdapter();
cmd.CommandType = CommandType.Text;
cmd.Connection = con;
try
{
con.Open();
sda.SelectCommand = cmd;
sda.Fill(dt);
//GridView1.DataSource = dt;
//GridView1.DataBind();
//GridView2.DataSource = dt;
//GridView2.DataBind();
dl_channels.DataSource = dt;
dl_channels.DataBind();
}
catch (Exception ex)
{
Response.Write(ex.Message);
}
finally
{
con.Close();
sda.Dispose();
con.Dispose();
dt.Dispose();
}

Let's say you have a Gridview with checkbox like this :
<asp:GridView ID="GridView1" runat="server">
<Columns>
<asp:TemplateField>
<ItemTemplate>
<asp:CheckBox ID="checkIT" runat="server"/>
</ItemTemplate>
</asp:TemplateField>
</asp:GridView>
<asp:Button ID="btnDisplay" runat="server" Text="Show data selected" OnClick="btnDisplay_Click"/>
<asp:TextBox id="textboxDataDisplay" runat="server" />
with a button to show the selected checkbox columns
C# code
protected void btnDisplay_Click(object sender, EventArgs e)
{
string data = "";
foreach (GridViewRow row in GridView1.Rows)
{
if (row.RowType == DataControlRowType.DataRow)
{
CheckBox chkRow = (row.Cells[0].FindControl("chkCtrl") as CheckBox);
if (chkRow.Checked)
{
string yourFirstRowCell = row.Cells[1].Text;
string yourSecondRowCell = row.Cells[2].Text;
string yourThirdRowCell = row.Cells[3].Text;
data = yourFirstRowCell + yourSecondRowCell + yourThirdRowCell;
}
}
}
textboxDataDisplay.text = data;
}
Row cells are the cells in that row you want to get where the checkbox is checked.

Radio button list selected value not persistent in asp.net

I have two dynamically populated radio button lists. The first one gets populated on a button click, the other one on the change event of the first radio button list. The problem is only with the second list. The issue is that I am not able to retrieve the changed value of the second radio button list in the InsertButton_Click method(marked by **). It always returns the default index value i.e 0. I don't have anything in page_load event. I read quite a few similar questions but none seem to help. Please guide. Below is the asp and c# code for the same:
ASP:
<asp:Button id="SaveButton"
Text="Save"
runat="server" onclick="SaveButton_Click">
</asp:Button>
<asp:Button id="VisualiseButton"
Text="Visualise"
runat="server" onclick="VisualiseButton_Click">
</asp:Button>
<!--<hr />-->
<asp:RadioButtonList id="RadioButtonList2" runat="server" Visible="false"
onselectedindexchanged="RadioButtonList2_SelectedIndexChanged" ></asp:RadioButtonList>
<asp:RadioButtonList id="RadioButtonList1" runat="server" Visible="false" ></asp:RadioButtonList>
<asp:Button id="SaveToDBButton"
Text="Insert"
runat="server" Visible="false" onclick="InsertButton_Click">
C#:
protected void SaveButton_Click(object sender, EventArgs e)
{
String selQuery = "SELECT id, name FROM categories";
try
{
con.Open();
SqlDataAdapter da = new SqlDataAdapter(selQuery, con);
DataTable dt = new DataTable();
da.Fill(dt);
RadioButtonList2.DataSource = dt;
RadioButtonList2.DataTextField = "name";
RadioButtonList2.DataValueField = "id";
RadioButtonList2.DataBind();
RadioButtonList2.RepeatColumns = 3;
RadioButtonList2.AutoPostBack = true;
RadioButtonList2.Visible = true;
}
catch (SqlException ex)
{
}
finally
{
if (con != null)
{
con.Close();
}
}
}
protected void RadioButtonList2_SelectedIndexChanged(object sender, EventArgs e)
{
String catId = RadioButtonList2.SelectedValue;
SqlCommand cmdselect = new SqlCommand("SELECT DISTINCT categoryId, linkTablesCategories.tableName, tableDescription FROM linkTablesCategories, tableDescriptions where linkTablesCategories.tableName = tableDescriptions.tableName and categoryId ='" + catId + "'");
RadioButtonList1.Items.Clear();
try
{
con.Open();
cmdselect.Connection = con;
SqlDataReader dar = cmdselect.ExecuteReader();
if (dar.HasRows)
{
while (dar.Read())
{
ListItem li = new ListItem(dar["tableName"].ToString(), dar["categoryId"].ToString());
li.Attributes.Add("title", dar["tableDescription"].ToString());
RadioButtonList1.Items.Add(li);
}
}
RadioButtonList1.Visible = true;
SaveToDBButton.Visible = true;
}
catch (SqlException ex)
{
//lblMessage.Text = ex.Message;
}
finally
{
cmdselect.Dispose();
if (con != null)
{
con.Close();
}
}
}
protected void InsertButton_Click(object sender, EventArgs e)
{
String tableId="";
**tableId = RadioButtonList1.SelectedItem.Text;**
String path = Server.MapPath("~/");
string filepath = path + Session["filepath"].ToString();
StreamReader sr = new StreamReader(filepath);
string line = sr.ReadLine();
string[] value = line.Split(',');
DataTable dt = new DataTable();
DataRow row;
foreach (string dc in value)
{
dt.Columns.Add(new DataColumn(dc));
}
while (!sr.EndOfStream)
{
value = sr.ReadLine().Split(',');
if (value.Length == dt.Columns.Count)
{
row = dt.NewRow();
row.ItemArray = value;
dt.Rows.Add(row);
}
}
SqlBulkCopy bc = new SqlBulkCopy(con.ConnectionString, SqlBulkCopyOptions.TableLock);
bc.DestinationTableName = tableId;
bc.BatchSize = dt.Rows.Count;
con.Open();
bc.WriteToServer(dt);
bc.Close();
con.Close();
}

it was with the line:
ListItem li = new ListItem(dar["tableName"].ToString(), dar["categoryId"].ToString());
The categoryId was a constant value and thus the issue, again my bad.
Thanks