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On button click - Get selected Value in grdiview

Question

User-588203678 posted

Hi,

I have a button outside gridview, The gridview has few columns

Onclick of button I need to get selected checkbox value i.e IDs 2,3 if 2 and 3 are selected

Select ID Name

2 sam

3 Sunil

protected void btn_Click1(object sender, EventArgs e)

        {

            string strSelectedID = "";

            grdRisk.DataSource = SqlDataSource1;

            grdRisk.DataBind();

            string data = "";

 

            foreach (GridViewRow gvrow in grdRisk.Rows)

            {

 

                CheckBox chk = (CheckBox)gvrow.FindControl("chkEdit");

 

                if (chk != null & chk.Checked)

                {

                    Label lblIDS = gvrow.FindControl("lblID") as Label;

                           strSelectedID += lblIDS.Text + ",";

                }

            }

Tuesday, June 28, 2016 5:42 PM

Answers

User1559292362 posted

Hi guhananth1,

Onclick of button I need to get selected checkbox value i.e IDs 2,3 if 2 and 3 are selected

Based on your description, I create a demo as below for your reference.

ASPX.

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="GetCheckedId.aspx.cs" Inherits="WebFormDemo.GridViewDemo.GetCheckedId" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False">
            <Columns>
                <asp:TemplateField>
                    <ItemTemplate>
                        <asp:CheckBox ID="chkRow" runat="server" />
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:BoundField DataField="Id" HeaderText="Id" ItemStyle-Width="150" />
                <asp:TemplateField HeaderText="Name" ItemStyle-Width="150">
                    <ItemTemplate>
                        <asp:Label ID="lblName" runat="server" Text='<%# Eval("Name") %>'></asp:Label>
                    </ItemTemplate>
                </asp:TemplateField>
            </Columns>
        </asp:GridView>
        <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:ASPDOTNETDEMOConnectionString %>" SelectCommand="SELECT [Id], [Name] FROM [GridViewTable1]"></asp:SqlDataSource>
        <br />
        <asp:Button ID="btnGetSelected" runat="server" Text="Get selected records" OnClick="GetSelectedRecords" />
        <u>Selected Rows</u>

<br />

        <asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>


    </div>
    </form>
</body>
</html>

Code Behind

using System;
using System.Collections.Generic;
using System.Web.UI.WebControls;

namespace WebFormDemo.GridViewDemo
{
    public partial class GetCheckedId : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            if(!IsPostBack)
            {
                this.GridView1.DataSource = SqlDataSource1;
                this.GridView1.DataBind();
            }
        }

        protected void GetSelectedRecords(object sender, EventArgs e)
        {
            List<string> ids = new List<string>();
            foreach (GridViewRow row in GridView1.Rows)
            {
                if (row.RowType == DataControlRowType.DataRow)
                {
                    CheckBox chkRow = (row.Cells[0].FindControl("chkRow") as CheckBox);
                    if (chkRow.Checked)
                    {
                        ids.Add(row.Cells[1].Text);
                    }
                }
            }
            Label1.Text = string.Join(",",ids.ToArray());
        }
    }
}

Best regards,

Cole Wu

Marked as answer by Anonymous Thursday, October 7, 2021 12:00 AM

Wednesday, June 29, 2016 5:15 AM

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User-1034726716 posted

Hi Sumit,

I moved the code to Not IsPostBack in page load,still the checkbox values are not captured

if(!PageIsPostBack) rdRisk.DataSource = SqlDataSource1; grdRisk.DataBind();

You need to wrap those within curly braces:

if(!IsPostBack){ //code for databind grdRisk.DataSource = SqlDataSource1; grdRisk.DataBind(); }

And make sure to remove your codes for binding your GridView in your Button Click handler.
- Marked as answer by Anonymous Thursday, October 7, 2021 12:00 AM
Wednesday, June 29, 2016 5:31 AM

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User-1034726716 posted

Calling DataBind() on Button click event will cause the GridView to reset on postbacks. This will also reset the state of the CheckBox. You would need to bind your GridView in Page_Load event within Not IsPostback block.

Tuesday, June 28, 2016 6:05 PM
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User-1672470423 posted

Move you binding code to Page_Load and check if it works then

grdRisk.DataSource = SqlDataSource1;
grdRisk.DataBind();

grdRisk.DataSource = SqlDataSource1; grdRisk.DataBind();
Tuesday, June 28, 2016 6:19 PM
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User-1034726716 posted

Move you binding code to Page_Load and check if it works then

grdRisk.DataSource = SqlDataSource1;
grdRisk.DataBind();

You would still need to put that code within Not IsPostback block:

if(!IsPostBack){ //code for databind }
Tuesday, June 28, 2016 6:51 PM
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User-588203678 posted

Hi Sumit,

I moved the code to Not IsPostBack in page load,still the checkbox values are not captured

if(!PageIsPostBack) rdRisk.DataSource = SqlDataSource1; grdRisk.DataBind();
Wednesday, June 29, 2016 12:41 AM

User1559292362 posted

Hi guhananth1,

Onclick of button I need to get selected checkbox value i.e IDs 2,3 if 2 and 3 are selected

Based on your description, I create a demo as below for your reference.

ASPX.

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="GetCheckedId.aspx.cs" Inherits="WebFormDemo.GridViewDemo.GetCheckedId" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False">
            <Columns>
                <asp:TemplateField>
                    <ItemTemplate>
                        <asp:CheckBox ID="chkRow" runat="server" />
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:BoundField DataField="Id" HeaderText="Id" ItemStyle-Width="150" />
                <asp:TemplateField HeaderText="Name" ItemStyle-Width="150">
                    <ItemTemplate>
                        <asp:Label ID="lblName" runat="server" Text='<%# Eval("Name") %>'></asp:Label>
                    </ItemTemplate>
                </asp:TemplateField>
            </Columns>
        </asp:GridView>
        <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:ASPDOTNETDEMOConnectionString %>" SelectCommand="SELECT [Id], [Name] FROM [GridViewTable1]"></asp:SqlDataSource>
        <br />
        <asp:Button ID="btnGetSelected" runat="server" Text="Get selected records" OnClick="GetSelectedRecords" />
        <u>Selected Rows</u>

<br />

        <asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>


    </div>
    </form>
</body>
</html>

Code Behind

using System;
using System.Collections.Generic;
using System.Web.UI.WebControls;

namespace WebFormDemo.GridViewDemo
{
    public partial class GetCheckedId : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            if(!IsPostBack)
            {
                this.GridView1.DataSource = SqlDataSource1;
                this.GridView1.DataBind();
            }
        }

        protected void GetSelectedRecords(object sender, EventArgs e)
        {
            List<string> ids = new List<string>();
            foreach (GridViewRow row in GridView1.Rows)
            {
                if (row.RowType == DataControlRowType.DataRow)
                {
                    CheckBox chkRow = (row.Cells[0].FindControl("chkRow") as CheckBox);
                    if (chkRow.Checked)
                    {
                        ids.Add(row.Cells[1].Text);
                    }
                }
            }
            Label1.Text = string.Join(",",ids.ToArray());
        }
    }
}

Best regards,

Cole Wu

Marked as answer by Anonymous Thursday, October 7, 2021 12:00 AM

Wednesday, June 29, 2016 5:15 AM

0

Sign in to vote
User-1034726716 posted

Hi Sumit,

I moved the code to Not IsPostBack in page load,still the checkbox values are not captured

if(!PageIsPostBack) rdRisk.DataSource = SqlDataSource1; grdRisk.DataBind();

You need to wrap those within curly braces:

if(!IsPostBack){ //code for databind grdRisk.DataSource = SqlDataSource1; grdRisk.DataBind(); }

And make sure to remove your codes for binding your GridView in your Button Click handler.
- Marked as answer by Anonymous Thursday, October 7, 2021 12:00 AM
Wednesday, June 29, 2016 5:31 AM

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On button click - Get selected Value in grdiview

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