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Hi, i'm trying to add a checkbox to a datagrid but don't seem to get anywhere. I got to add a new column but that's where it stops.
I'm reading data out of my database and then deleting the first column of that dataset's table as it is not needed, then adding another column for the checkbox to be in.
Here is my code: Can anybody please give me some advice?
(I have visited alot of sites and other forums sofar but don't seem to get a solution):(

(Please note that i'm using a masterpage)

//DATA GRID VIEW FILL
        clsUploadCallArray getallcalls = new clsUploadCallArray(emp.E_mobile.ToString());
        int c = getallcalls.UploadCallsObj.Count;
        DataSet uploadDS = getallcalls.UplCallDS;
        DataTable uploadDT = uploadDS.Tables["Upload"];
        uploadDT.Columns.Remove("Upl_ID");
        uploadDT.Columns.Add();
        dgv_Calls.DataSource = uploadDT;
        dgv_Calls.DataBind();
        dgv_Calls.Visible = true;

        //set column names
        //header text
        dgv_Calls.HeaderRow.Cells[0].Text = "Tel";
        dgv_Calls.HeaderRow.Cells[1].Text = "Start Date/Time";
        dgv_Calls.HeaderRow.Cells[2].Text = "Duration(seconds)";
        dgv_Calls.HeaderRow.Cells[3].Text = "Transaction";
        dgv_Calls.HeaderRow.Cells[4].Text = "Destination";
        dgv_Calls.HeaderRow.Cells[5].Text = "Amount";
        dgv_Calls.HeaderRow.Cells[6].Text = "Roaming";
        dgv_Calls.HeaderRow.Cells[7].Text = "Discount";
        dgv_Calls.HeaderRow.Cells[8].Text = "Mark";
        //footer text
        dgv_Calls.FooterRow.Cells[0].Text = "Tel";
        dgv_Calls.FooterRow.Cells[1].Text = "Start Date/Time";
        dgv_Calls.FooterRow.Cells[2].Text = "Duration(seconds)";
        dgv_Calls.FooterRow.Cells[3].Text = "Transaction";
        dgv_Calls.FooterRow.Cells[4].Text = "Destination";
        dgv_Calls.FooterRow.Cells[5].Text = "Amount";
        dgv_Calls.FooterRow.Cells[6].Text = "Roaming";
        dgv_Calls.FooterRow.Cells[7].Text = "Discount";
        dgv_Calls.FooterRow.Cells[8].Text = "Mark";

        dgv_Calls.Attributes["style"] = "border-color:black";

Edited by phoenix_dwarf: n/a

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Last Post by phoenix_dwarf
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I think we cannot add a checkbox to a datagrid on code behind.But if you are good at javascript we can find a way to do that.

function AddColumn()
    {
     var tab =document.getElementById('GridView1');//Your DataGrid Id
          
     var rows =tab.getElementsByTagName("tr");
     for(var i=0;i<rows.length;i++)
     {
       var currentrow= rows[i];
       var newcell=currentrow.insertCell(-1);
       newcell.innerHTML="<input type='checkbox' />";
     }
    
    }

The above code adds a checkbox to each row of a datagrid.
I dont know wether its good programming practice or not...

1

Hello

You can use the following code
ASPX

<asp:TemplateColumn>
                                        <headertemplate>
<asp:checkbox id="chkSelectAll"  runat="server" Width="30px" Enabled="False" ></asp:checkbox> </headertemplate>
                                        <itemtemplate>
<asp:checkbox id="chkSelect"  runat="server" Width="30px" SecurityContextID="0" Enabled="False"  Checked='<%# DataBinder.Eval(Container, "DataItem.IsSelected") %>' AutoFocus="False" ></asp:checkbox> 
</itemtemplate>
                                        <headerstyle width="30px"></headerstyle>
                                    </asp:TemplateColumn>

ASPX.VB
Note : datagrid = "dg"

To fine any data from the datagrid use the following

Private Function _validateEachEmployeeRow() As String
        Dim i As Int16
        Dim chkSelect As CheckBox
        'Dim txtEmpName, txt As HASIB.Controls.HasibTextBox
        Dim lbl, lblEmpName As HASIB.Controls.HasibLabel
        For i = 0 To dg.Items.Count - 1
            chkSelect = Me.dg.Items(i).FindControl("chkSelect")
            If chkSelect.Checked Then
                lblEmpName = Me.dg.Items(i).FindControl("lblEmployeeName")
                
        Next
        Return lblEmpName 
   End Function

Mark as solved if it helps you!!!

Edited by reach_yousuf: n/a

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Well thanx for all the replies but reach_yousuf your code gives an error by me...it says that the <asp:TemplateColumn> is an unknown element...and a bucnh of other errors...any ideas?
(I put this piece of code in my masterpages header and inside the asp:Gridview block but still same errors.)

Non-Masterpage code:

<%@ Page Language="C#" MasterPageFile="~/MasterPage.master" AutoEventWireup="true" CodeFile="Calls.aspx.cs" Inherits="Calls" Title="Untitled Page" %>
<asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server">
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolderMain" Runat="Server">
    <asp:Label ID="lbl_Welcome1" runat="server" Text="Welcome: "></asp:Label>
    <asp:Label ID="lbl_Welcome" runat="server" Text="N/A"></asp:Label>
    &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
    &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
    &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
    &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<asp:Button ID="btn_Back" runat="server"
        OnClick="btn_Back_Click" Text="Back" />
    <asp:Button ID="btn_Logout" runat="server" OnClick="btn_Logout_Click" Text="Log Out" /><br />
    &nbsp;
    
    <asp:GridView ID="dgv_Calls" runat="server" ForeColor="#333333" GridLines="Vertical" ShowFooter="True">
        <HeaderStyle BackColor="#5D7B9D" BorderColor="Black" BorderStyle="Double" BorderWidth="2px" Font-Bold="True" ForeColor="White" HorizontalAlign="Center" />
        <RowStyle BackColor="#F7F6F3" ForeColor="#333333" HorizontalAlign="Center" VerticalAlign="Middle" />
        <FooterStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" HorizontalAlign="Center" VerticalAlign="Middle" />
        <PagerStyle BackColor="#284775" ForeColor="White" HorizontalAlign="Center" />
        <SelectedRowStyle BackColor="#E2DED6" Font-Bold="True" ForeColor="#333333" />
        <EditRowStyle BackColor="#999999" />
        <AlternatingRowStyle BackColor="White" ForeColor="#284775" />
        
        <asp:TemplateColumn>
        <headertemplate>
        <asp:checkbox id="chkSelectAll"  runat="server" Width="30px" Enabled="False" ></asp:checkbox> 
        </headertemplate>
        <itemtemplate><asp:checkbox id="chkSelect"  runat="server" Width="30px" SecurityContextID="0" Enabled="False"  Checked='<%# DataBinder.Eval(Container, "DataItem.IsSelected") %>' AutoFocus="False" >
        </asp:checkbox> </itemtemplate>
        <headerstyle width="30px"></headerstyle>
        </asp:TemplateColumn>
    </asp:GridView>
</asp:Content>

Master Page Code:

<%@ Master Language="C#" AutoEventWireup="true" CodeFile="MasterPage.master.cs" Inherits="MasterPage" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>BASF ~ Login</title>
    
    <script language="javascript">
    window.history.forward(1);
    </script>
    
    <asp:TemplateColumn>
        <headertemplate>
        <asp:checkbox id="chkSelectAll"  runat="server" Width="30px" Enabled="False" ></asp:checkbox> 
        </headertemplate>
        <itemtemplate><asp:checkbox id="chkSelect"  runat="server" Width="30px" SecurityContextID="0" Enabled="False"  Checked='<%# DataBinder.Eval(Container, "DataItem.IsSelected") %>' AutoFocus="False" >
        </asp:checkbox> </itemtemplate>
        <headerstyle width="30px"></headerstyle>
        </asp:TemplateColumn>
    
    <asp:ContentPlaceHolder id="head" runat="server">
    </asp:ContentPlaceHolder>
    <link href="Styles.css" rel="stylesheet" type="text/css" />
</head>
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Oky all is well now but now i ran into the problem of selecting certain rows and only retrieving those rows data....here is my code:

public void ValidateCheck()
    {
        int count = 0;
        // Select the checkboxes from the GridView control 
        for (int i = 0; i < dgv_Calls.Rows.Count; i++)
        {
            GridViewRow row = dgv_Calls.Rows[i];
            bool isChecked = ((CheckBox)row.FindControl("chkSelect")).Checked;
            if (isChecked)
            {
                count++;
                telD.Text = "YAY!!!" + count;
            }
        }
        //telD.Text = "YAY!!!" + count;
}

This function is run when i press the submit button...Any thoughts?

Edited by phoenix_dwarf: comment something out

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Make that field data type as bit in database..then you retrieve from database check box will appear for that column..

0

Oky all is well now but now i ran into the problem of selecting certain rows and only retrieving those rows data

what is the problem.

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Well if i create a bit column it retrives the data from the database and shows it as a checked or non-checked box but it is grayed out....i saw that if you want to check or uncheck the box you must then enable 'edi't but this works only row for row in other words you can only check or uncheck when you selected one row to edit - finish the edit and then move forward to the next row an do the whole cycle again...(which is very frustrating)

Edited by phoenix_dwarf: spelling error

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