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Introduction:

Here I will explain how to get checkbox selected gridview row values in asp.net using C# and VB.NET or get row values from gridview when checkbox selected in asp.net using C# and VB.NET.

Description:

In previous articles I explained Asp.net Interview questions, Export Gridview data to PDF, Send values from one page to another page using QueryString, Joins in SQL Server, Highlight Gridview records based on search and many articles relating to Gridview, SQL, jQuery,asp.net, C#,VB.NET. Now I will explain how to get row values from gridview when checkbox selected asp.net using C# and VB.NET.

To get checkbox selected row values from gridview we need to write the code like this

C# Code


foreach(GridViewRow  gvrow in gvDetails.Rows)
{
CheckBox chk = (CheckBox)gvrow.FindControl("chkSelect");
if (chk != null & chk.Checked)
{
str += gvDetails.DataKeys[gvrow.RowIndex].Value.ToString() + ',';
strname += gvrow.Cells[2].Text+',';
}
}
VB.NET Code


For Each gvrow As GridViewRow In gvDetails.Rows
Dim chk As CheckBox = DirectCast(gvrow.FindControl("chkSelect"), CheckBox)
If chk IsNot Nothing And chk.Checked Then
str += gvDetails.DataKeys(gvrow.RowIndex).Value.ToString() + ","c
strname += gvrow.Cells(2).Text & ","c
End If
Next
If you want to see complete example we need to write the following code in aspx page


<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Get Checkbox Selected Row Values from Gridview in Asp.net</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:GridView ID="gvDetails" DataKeyNames="UserId" AutoGenerateColumns="false" CellPadding="5" runat="server">
<Columns>
<asp:TemplateField>
<ItemTemplate>
<asp:CheckBox ID="chkSelect" runat="server" />
</ItemTemplate>
</asp:TemplateField>
<asp:BoundField HeaderText="UserId" DataField="UserId" />
<asp:BoundField HeaderText="UserName" DataField="UserName" />
<asp:BoundField HeaderText="Education" DataField="Education" />
<asp:BoundField HeaderText="Location" DataField="Location" />
</Columns>
<HeaderStyle BackColor="#df5015" Font-Bold="true" ForeColor="White" />
</asp:GridView>
<asp:Button ID="btnProcess" Text="Get Selected Records" runat="server"
Font-Bold="true" onclick="btnProcess_Click" /><br />
<asp:Label ID="lblmsg" runat="server" />
</div>
</form>
</body>
</html>
Now in code behind add the following namespaces

C# Code


using System;
using System.Data;
using System.Data.SqlClient;
using System.Web.UI.WebControls;
Now add below code in code behind


protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
BindGridviewData();
}
}
protected void BindGridviewData()
{
DataTable dt = new DataTable();
dt.Columns.Add("UserId", typeof(Int32));
dt.Columns.Add("UserName", typeof(string));
dt.Columns.Add("Education", typeof(string));
dt.Columns.Add("Location", typeof(string));
DataRow dtrow = dt.NewRow();    // Create New Row
dtrow["UserId"] = 1;            //Bind Data to Columns
dtrow["UserName"] = "SureshDasari";
dtrow["Education"] = "B.Tech";
dtrow["Location"] = "Chennai";
dt.Rows.Add(dtrow);
dtrow = dt.NewRow();               // Create New Row
dtrow["UserId"] = 2;               //Bind Data to Columns
dtrow["UserName"] = "MadhavSai";
dtrow["Education"] = "MBA";
dtrow["Location"] = "Nagpur";
dt.Rows.Add(dtrow);
dtrow = dt.NewRow();              // Create New Row
dtrow["UserId"] = 3;              //Bind Data to Columns
dtrow["UserName"] = "MaheshDasari";
dtrow["Education"] = "B.Tech";
dtrow["Location"] = "Nuzividu";
dt.Rows.Add(dtrow);
gvDetails.DataSource = dt;
gvDetails.DataBind();
}
protected void btnProcess_Click(object sender, EventArgs e)
{
string str = string.Empty;
string strname = string.Empty;
foreach(GridViewRow  gvrow in gvDetails.Rows)
{
CheckBox chk = (CheckBox)gvrow.FindControl("chkSelect");
if (chk != null & chk.Checked)
{
str += gvDetails.DataKeys[gvrow.RowIndex].Value.ToString() + ',';
strname += gvrow.Cells[2].Text+',';
}
}
str= str.Trim(",".ToCharArray());
strname = strname.Trim(",".ToCharArray());
lblmsg.Text = "Selected UserIds: <b>" + str + "</b><br/>" + "Selected UserNames: <b>" + strname+"</b>";
}
VB.NET Code


Imports System.Data
Imports System.Data.SqlClient
Imports System.Web.UI.WebControls
Partial Class VBCode
Inherits System.Web.UI.Page
Protected Sub Page_Load(sender As Object, e As EventArgs) Handles Me.Load
If Not IsPostBack Then
BindGridviewData()
End If
End Sub
Protected Sub BindGridviewData()
Dim dt As New DataTable()
dt.Columns.Add("UserId", GetType(Int32))
dt.Columns.Add("UserName", GetType(String))
dt.Columns.Add("Education", GetType(String))
dt.Columns.Add("Location", GetType(String))
Dim dtrow As DataRow = dt.NewRow()
' Create New Row
dtrow("UserId") = 1
'Bind Data to Columns
dtrow("UserName") = "SureshDasari"
dtrow("Education") = "B.Tech"
dtrow("Location") = "Chennai"
dt.Rows.Add(dtrow)
dtrow = dt.NewRow()
' Create New Row
dtrow("UserId") = 2
'Bind Data to Columns
dtrow("UserName") = "MadhavSai"
dtrow("Education") = "MBA"
dtrow("Location") = "Nagpur"
dt.Rows.Add(dtrow)
dtrow = dt.NewRow()
' Create New Row
dtrow("UserId") = 3
'Bind Data to Columns
dtrow("UserName") = "MaheshDasari"
dtrow("Education") = "B.Tech"
dtrow("Location") = "Nuzividu"
dt.Rows.Add(dtrow)
gvDetails.DataSource = dt
gvDetails.DataBind()
End Sub
Protected Sub btnProcess_Click(sender As Object, e As EventArgs)
Dim str As String = String.Empty
Dim strname As String = String.Empty
For Each gvrow As GridViewRow In gvDetails.Rows
Dim chk As CheckBox = DirectCast(gvrow.FindControl("chkSelect"), CheckBox)
If chk IsNot Nothing And chk.Checked Then
str += gvDetails.DataKeys(gvrow.RowIndex).Value.ToString() + ","c
strname += gvrow.Cells(2).Text & ","c
End If
Next
str = str.Trim(",".ToCharArray())
strname = strname.Trim(",".ToCharArray())
lblmsg.Text = "Selected UserIds: <b>" & str & "</b><br/>" & "Selected UserNames: <b>" & strname & "</b>"
End Sub
End Class
Demo

 

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33 comments :

Narsimhareddy venna said...

very use full post to the developers,U r blog has very nice examples


Thank u very much Sir. from Narsimha

Krishna Kumar said...

on your website in right advertising porn website with porn image..that is wrong ...we could not open not in front of some pleple..please remove it..

Krishna Kumar said...

on your website in right side advertising porn website with porn image..that is wrong ...we could not open it ..in front of some people..please remove it..

Suresh Dasari said...

@Krishna Kumar,
Thanks for your kind notification. Actually those ads are coming from google adsense. I already sent request to remove those ads.

Anonymous said...

hai suresh.. ur blogs are very useful for my projects.. i used ur codings in my project.. it helps a lot..


now i want to use approval workflow in windows workflow foundation in asp.net.. i refered many sites but i can't understand clearly..

would you help me please..

its urgent.. please help me sir..

thanks in advance..

Anonymous said...

Hello sir,

is there any property for setting header text for template field(as u have explain Checkbox template)

send me reply on wis_134@yahoo.com

Thank you

Anonymous said...

pls any 1 help me for implementing approval workflow in wwf.......


plzzzzzzzzzzzz

Anonymous said...

hi sir
wt is wcf and when and where is used wcf?

DIFFERENCE BETWEEN THE EXCUTE READER AND EXCUTE NON QUERY?
PLZ HELP ME

Suresh Dasari said...

i don't know whether you are checked in my site using search or not. i written all the articles if you want anything check through search. Please check this article http://www.aspdotnet-suresh.com/2012/09/differences-between-executereader.html

Anonymous said...

thnks it is useul

Anonymous said...

hi sir
please tell me one problem

How to bind each line of text from textbox in each row of gridview

noorul hassan said...

Sir, can you tell me how to get the values of a row in a gridview and display in next page?

noorul hassan said...

Sir, Can you tell me how to get the values of a row in a gridview and display in next page

sakthideveloper said...

sir, the check box control was refreshed when i get click the submit button. how to resolve it.

Anonymous said...

good

Anonymous said...

Hello,Sir
I am new to c#.net and I am developing online examination website,during this i got the problem that when we display the list of questions and selected que. from gridview should be appear in exam how it is possible .Can you provide me code snnepts for better guidence?
I have to submit my project within three days ,Please sir HELP ME.

THANK YOU

Lalit Jangra said...

thanks bro, for this nice work.

Anonymous said...


hi suresh ur articles are very very nice and useful to software engineers... i think your search option is not working properly.....plz check once yaar

Anonymous said...

hi suresh search option is not working properly iam not able to find out my required article by using search option.....plz check once yaar

Gayathri N said...

here you retrive the data from grid.can you show me how to display that datas into dropdownlist

Anonymous said...

Sir, i want to display only selected content.. that means I need to display only query based content.. Example, if i give a query as exam means the exam content only i need to display.. thank u.

Anonymous said...

Thanks for the article
but when we select checkbox from mulitple pages of gridview we get only values of current page.

Anonymous said...

Hi suresh,

i have debug,

my problem is i am using a asp gridview with templatefields in that i have a checkbox .

wheather i want to checked the checkbox and inserting into database table,

how can i store the checked checkbox value..

table
--------
firstname nvarchar(40)
lastname nvarchar(40)
place nvarchar(20)
active bit

Dendupous Tshering said...

Suresh could u please tell me how to return last row data of a grid view into label

Anonymous said...

hello sir , when i try to cast it give exception like this
"Unable to cast object of type 'System.Web.UI.WebControls.GridViewRow' to type 'System.Web.UI.WebControls.GridView'."

whhile my code is like this

for data in gridview
private void show()
{
con = new SqlConnection(str);
con.Open();
cmd = new SqlCommand("select * from info", con);
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataSet ds = new DataSet();
da.Fill(ds);
GvShow.DataSource = ds;
GvShow.DataBind();
}

and on button click
string strid = string.Empty;
string strname = string.Empty;

foreach(GridView gds in GvShow.Rows)
{
CheckBox chb = (CheckBox)gds.FindControl("chk");

}

Atul Enjoying with studies said...

getting error.

Object reference not set to an instance of an object.

foreach (GridViewRow gridviewrow in grv.Rows)
{
}

Amit Kumar said...

sir as many other article there is option for download the code , but some of your article doesn't have option for download. can we have a download option for all aritcle

Saravanan Anna said...

Thanks, it is working fine for me.

pavan amireddy said...

my code behind page is :

protected void btnSend_Click(object sender, EventArgs e)
{
string str = "";
string strname = "";
foreach(GridViewRow gvrow in grdUserData.Rows)
{
CheckBox chk = (CheckBox)gvrow.FindControl("chkSelect");
if (chk != null & chk.Checked)
{
str += grdUserData.DataKeys[gvrow.RowIndex].Value.ToString() + ',';
strname += gvrow.Cells[2].Text + ',';
}
}
str= str.Trim(",".ToCharArray());
strname = strname.Trim(",".ToCharArray());
lblString.Text = "Selected UserIds: " + str + "
" + "Selected UserNames: " + strname+"";
}

and my gridview is:












i am getting this error :
Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index

vilis patel said...

Thanks a lot bro!!! i m so happy to got your article.!!! As i m that much confuse to see lots of way that may distract me from my goal.!!! I greatly thanks to you bro!!! :)

deva prasad said...

suresh can u give me source code of integerating ccavenue payment project .

Prakash Mondal said...

In Master page using ModalPopUpExtender did not work..... CheckBox.Checked.. all time CheckBox.Check=false

surendra suri said...

it is vert useful

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