How to get list of id of selected checkbox in radgrid on button click?

[Swapnil]

Hi,
How to get list of  id of selected checkbox in radgrid on button click?

Source:

<telerik:RadGrid ID="gv1" runat="server">
            <MasterTableView DataKeyNames="UserId">
                <Columns>
                    <telerik:GridTemplateColumn>
                        <ItemTemplate>
                            <asp:CheckBox ID="CheckBox1" runat="server" />
                        </ItemTemplate>
                    </telerik:GridTemplateColumn>
                </Columns>
            </MasterTableView>
        </telerik:RadGrid>

What will be the code on save button click to get the list of UserID releted to the checked checkbox row?
Thanks

[Shinu]

Hi Swapnil,

Please have a look into the following code I tried which works fine at my end.

ASPX:

protected void RadButton1_Click(object sender, EventArgs e)
{
    foreach (GridDataItem item in gv1.MasterTableView.Items)
    {
        CheckBox chk = (CheckBox)item.FindControl("CheckBox1");
        if (chk.Checked == true)
        {
            string ID = item.GetDataKeyValue("DataKeyNameString").ToString();
        }
    }
}

Thanks,
Shinu.

[Swapnil]

I tried with this code

<telerik:RadGrid ID="gv1" runat="server">
           <MasterTableView DataKeyNames="UserName">
               <Columns>
                   <telerik:GridTemplateColumn>
                       <ItemTemplate>
                           <asp:CheckBox ID="CheckBox1" runat="server" />
                       </ItemTemplate>
                   </telerik:GridTemplateColumn>
               </Columns>
           </MasterTableView>
       </telerik:RadGrid>

protected void btnsave_Click(object sender, EventArgs e)
   {
       foreach (GridDataItem item in gv1.MasterTableView.Items)
       {
           CheckBox chk = (CheckBox)item.FindControl("CheckBox1");
           if (chk.Checked == true)
           {
               string ID = item.GetDataKeyValue("UserName").ToString();
           }
       }
   }

but while debugging it is not going inside IF condition and chk value is given as checked="false"
Thanks

[Swapnil]

I tried this but debugger not going inside if condition and value of chk is shown as checked=false even if i checked the checkbox

<telerik:RadGrid ID="gv1" runat="server">
            <MasterTableView DataKeyNames="UserName">
                <Columns>
                    <telerik:GridTemplateColumn>
                        <ItemTemplate>
                            <asp:CheckBox ID="CheckBox1" runat="server" />
                        </ItemTemplate>
                    </telerik:GridTemplateColumn>
                </Columns>
            </MasterTableView>
        </telerik:RadGrid>

and

protected void btnsave_Click(object sender, EventArgs e)
   {
       foreach (GridDataItem item in gv1.MasterTableView.Items)
       {
           CheckBox chk = (CheckBox)item.FindControl("CheckBox1");
           if (chk.Checked == true)
           {
               string ID = item.GetDataKeyValue("UserName").ToString();
           }
       }
   }

[Shinu]

Hi Swapnil,

Unfortunately I couldn't replicate the issue at my end.

Thanks,
Shinu.

[Fuhai]

Hey,

your code looks ok, the check box item in client side maybe not working as expected, try to use this line for clientidmode. and let me know if it is working for you.

<ItemTemplate>

<asp:CheckBox ID="chbAttached" runat="server" ClientIDMode="AutoID" ></asp:CheckBox>

</ItemTemplate>

[Swapnil]

This also doesnt work for me ,i added the line ClientIDMode="AutoID" but it also not doing nothing
main problem is while debugging the code on button click the debugger is not going inside if condition and each time the checkbox checked is given false

protected void btnsave_Click(object sender, EventArgs e)
   {
       foreach (GridDataItem item in gv1.MasterTableView.Items)
       {
           CheckBox chk = (CheckBox)item.FindControl("CheckBox1");
           if (chk.Checked == true)
           {
               string ID = item.GetDataKeyValue("UserName").ToString();
           }
       }
   }

[Princy]

Hi Swapnil,

I have tried the above code and it works fine at my end.See the below code snippet.Can you make sure that you are able to access the checkbox using breakpoints.Can you please provide your full code.

ASPX:

<telerik:RadGrid ID="RadGrid1" runat="server">
           <MasterTableView DataKeyNames="OrderID">
               <Columns>
                  <telerik:GridTemplateColumn>
                       <ItemTemplate>
                           <asp:CheckBox ID="CheckBox1" runat="server" ClientIDMode="AutoID"></asp:CheckBox>
                       </ItemTemplate>
                   </telerik:GridTemplateColumn>
               </Columns>
           </MasterTableView>
       </telerik:RadGrid>
       <asp:Button ID="Button1" runat="server" Text="Save" OnClick="Button1_Click" />

C#:

protected void Button1_Click(object sender, EventArgs e)
   {
    foreach (GridDataItem item in RadGrid1.MasterTableView.Items)
     {
       CheckBox chk = (CheckBox)item.FindControl("CheckBox1");
       if (chk.Checked == true)
       {
         string ID = item.GetDataKeyValue("OrderID").ToString();
       }
     }
   }

Thanks,
Princy

[Swapnil]

Hi Princy,
Same problem not able to figure out
here is my code

<%@ Page Title="" Language="C#" MasterPageFile="~/ReportAdmin.Master" AutoEventWireup="true"
    CodeFile="GroupUserCreation.aspx.cs" Inherits="GroupUserCreation" %>

<%@ Register Assembly="Telerik.Web.UI" Namespace="Telerik.Web.UI" TagPrefix="telerik" %>
<asp:Content ID="Content1" ContentPlaceHolderID="head" runat="Server">
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" runat="Server">
    <center>
        <telerik:RadComboBox ID="cmbgroupname" runat="server" Width="200px" EmptyMessage="             Select Group"
            Skin="Default">
        </telerik:RadComboBox>
        <br />
        <br />
        <telerik:RadGrid ID="gv1" runat="server">
            <MasterTableView DataKeyNames="UserId">
                <Columns>
                    <telerik:GridTemplateColumn>
                        <ItemTemplate>
                            <asp:CheckBox ID="CheckBox1" runat="server" ClientIDMode="AutoID"></asp:CheckBox>
                        </ItemTemplate>
                    </telerik:GridTemplateColumn>
                </Columns>
            </MasterTableView>
        </telerik:RadGrid>
        <asp:Button ID="Button1" runat="server" Text="Save" OnClick="Button1_Click" />
        <br />
    </center>
</asp:Content>

and

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Data.SqlClient;
using Telerik.Web.UI;
using System.Collections;


public partial class GroupUserCreation : System.Web.UI.Page
{
    Globas obj = new Globas();
    CheckBox chkbox = new CheckBox();
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {

        }
        DataTable dt = obj.UserDetails();
        gv1.DataSource = dt;
        gv1.DataBind();

        DataTable dt1 = obj.GroupDetails();
        cmbgroupname.DataSource = dt1;
        cmbgroupname.DataTextField = "GroupName";
        cmbgroupname.DataValueField = "GroupId";
        cmbgroupname.DataBind();

    }

    protected void Button1_Click(object sender, EventArgs e)
    {
        foreach (GridDataItem item in gv1.MasterTableView.Items)
        {
            CheckBox chk = (CheckBox)item.FindControl("CheckBox1");
            if (chk.Checked == true)
            {
                string ID = item.GetDataKeyValue("UserId").ToString();
            }
        }
    }



}

Thanks

[Princy]

Hi Swapnil,

Please bind the RadGrid using NeedDataSource event and in the page load if you want to bind the RadComboBox,please try it inside the 
if(!IsPostBack).The post back is causing the checkbox to return to its normal state,which is uncheck,that's why,the condition is always false.

Thanks,
Princy
   

[Swapnil]

above code working fine but by using this code i can check all checkboxes

<telerik:RadGrid ID="gv1" runat="server" AllowMultiRowSelection="true" onneeddatasource="RadGrid1_NeedDataSource">
    <ClientSettings Selecting-AllowRowSelect="true">
    </ClientSettings>
    <MasterTableView DataKeyNames="UserId">
        <Columns>
            <telerik:GridClientSelectColumn UniqueName="ClientSelectColumn" />
        </Columns>
    </MasterTableView>
</telerik:RadGrid>
       <asp:Button ID="Button1" runat="server" Text="Save" OnClick="Button1_Click" />

and

protected void Page_Load(object sender, EventArgs e)
   {
       if (!IsPostBack)
       {

           DataTable dt1 = obj.GroupDetails();
           cmbgroupname.DataSource = dt1;
           cmbgroupname.DataTextField = "GroupName";
           cmbgroupname.DataValueField = "GroupId";
           cmbgroupname.DataBind();
       }


   }

   protected void Button1_Click(object sender, EventArgs e)
   {
       foreach (GridDataItem item in gv1.MasterTableView.Items)
       {
           CheckBox chk = (CheckBox)item.FindControl("CheckBox1");
           if (chk.Checked == true)
           {
               int ID =Convert.ToInt32 (item.GetDataKeyValue("UserId").ToString());
           }
       }
   }

   protected void RadGrid1_NeedDataSource(object sender, GridNeedDataSourceEventArgs e)
   {
       DataTable dt = obj.UserDetails();
       gv1.DataSource = dt;

   }

but its giving error as object reference not set to an instance of object please give some solution
thnks in advance

[Swapnil]

Thanks for the help Princy
got the solution

[Siddharth]

In the similar scenario , how to get the id of unselected(deselected) row?

[Eyup]

Hello Siddharth,

There are several different approaches you can use in order to achieve this requirement. This can be done either on client-side using the OnRowDeselected event handler or on server-side using the ItemCommand event handler after enabling the EnablePostBackOnRowClick property.

Let me know if you want the solution to be on server or client-side and I will prepare a sample runnable web site for your convenience and send it to you.

Regards,
Eyup
Telerik