Skip to main content

Jquery read DatakeyNames value of Selected Rows of GridView in Asp.Net

As we know GridView is a very popular control. We always experiment to enhance the GridView control to provide better experience to user. Since javascript is also a popular clientside language, most of the times we use this in client side operations like validation, Row coloring, cell coloring etc. Now a days Jquery is more popular so that in this article i will explain how you can capture the selected rows of a GridView control and also read the datakeyname values using JQuery. So at first i will tell you how we capture selected rows of a GridView. In this example i don't consider the built in Select command. Instead of select command here i use checkbox to select rows by user. The another important tip is we cannot directly access DataKeyNames values of a GridView. To get the value, here I will use a template column to store the same DataKeyValue in a hiddenfield. After that through iteration by Jquery I will read the hiddenfield values which looks alike datakeynames values.

For selecting/deselecting all checkboxes of a GridView using Javascript click here.


My example output look like below:
GridView_Datakeynames_jQuery

The GridView Control HTML will be:
01<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false" DataKeyNames="ID">  
02            <Columns>  
03                <asp:TemplateField>  
04                    <ItemTemplate>  
05                        <asp:CheckBox ID="chkSelect" runat="server" />  
06                        <asp:HiddenField ID="IDVal" runat="server" Value='<%# Eval("ID") %>' />  
07                    </ItemTemplate>  
08                </asp:TemplateField>  
09                <asp:TemplateField>  
10                    <HeaderTemplate>  
11                        Name  
12                    </HeaderTemplate>  
13                    <ItemTemplate>  
14                        <asp:Label ID="Label1" runat="server" Text='<%# Eval("Name") %>'></asp:Label>  
15                    </ItemTemplate>  
16                </asp:TemplateField>  
17            </Columns>  
18        </asp:GridView>

The Jquery Script also given below:
01<script type="text/javascript">  
02    $(document).ready(function() { 
03    var gridView1Control = document.getElementById('<%= GridView1.ClientID %>');  
04    $('#<%= cmdGetData.ClientID %>').click(function (e) {
05        var DataKeyName=""
06        $('input:checkbox[id$=chkSelect]:checked', gridView1Control).each(function (item, index) {  
07            if(DataKeyName.length==0)
08            {
09                DataKeyName = $(this).next('input:hidden[id$=IDVal]').val();
10            }
11            else
12            {
13                DataKeyName += "," + $(this).next('input:hidden[id$=IDVal]').val();
14            }
15        });  
16        alert(DataKeyName);
17        return false;  
18    });  
19   });  
20</script>

Now Bind the GridView data within Page_Load Event:
01protected void Page_Load(object sender, EventArgs e)
02    {
03        DataTable dt = new DataTable();
04 
05        dt.Columns.Add("ID");
06        dt.Columns.Add("Name");
07 
08        DataRow oItem = dt.NewRow();
09        oItem[0] = "1";
10        oItem[1] = "Shawpnendu Bikash Maloroy";
11        dt.Rows.Add(oItem);
12 
13        oItem = dt.NewRow();
14        oItem[0] = "2";
15        oItem[1] = "Bimalendu Bikash Maloroy";
16        dt.Rows.Add(oItem);
17 
18        oItem = dt.NewRow();
19        oItem[0] = "3";
20        oItem[1] = "Purnendu Bikash Maloroy";
21        dt.Rows.Add(oItem);
22 
23        GridView1.DataSource = dt;
24        GridView1.DataBind();
25 
26    }

The complete markup language of this example is:
01<%@ Page Language="C#" AutoEventWireup="true" CodeFile="GridView_DataKeyNames_Jquery.aspx.cs" Inherits="GridView_DataKeyNames_Jquery" %>
02 
03<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
04 
05<html xmlns="http://www.w3.org/1999/xhtml" >
06<head runat="server">
07<title>Get Selected rows of a GridView using Jquery</title>
08<script src="Script/jquery.js" type="text/javascript"></script>
09 
10<script type="text/javascript">  
11    $(document).ready(function() { 
12    var gridView1Control = document.getElementById('<%= GridView1.ClientID %>');  
13    $('#<%= cmdGetData.ClientID %>').click(function (e) {
14        var DataKeyName=""; 
15        $('input:checkbox[id$=chkSelect]:checked', gridView1Control).each(function (item, index) {  
16            if(DataKeyName.length==0)
17            {
18                DataKeyName = $(this).next('input:hidden[id$=IDVal]').val();
19            }
20            else
21            {
22                DataKeyName += "," + $(this).next('input:hidden[id$=IDVal]').val();
23            }
24        });  
25        alert(DataKeyName);
26        return false;  
27    });  
28   });  
29</script>  
30     
31</head>
32<body>
33    <form id="form1" runat="server">
34    <div>
35        <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false" DataKeyNames="ID">  
36            <Columns>  
37                <asp:TemplateField>  
38                    <ItemTemplate>  
39                        <asp:CheckBox ID="chkSelect" runat="server" />  
40                        <asp:HiddenField ID="IDVal" runat="server" Value='<%# Eval("ID") %>' />  
41                    </ItemTemplate>  
42                </asp:TemplateField>  
43                <asp:TemplateField>  
44                    <HeaderTemplate>  
45                        Name  
46                    </HeaderTemplate>  
47                    <ItemTemplate>  
48                        <asp:Label ID="Label1" runat="server" Text='<%# Eval("Name") %>'></asp:Label>  
49                    </ItemTemplate>  
50                </asp:TemplateField>  
51            </Columns>  
52        </asp:GridView>  
53   
54         
55    
56        <asp:Button ID="cmdGetData" runat="server" Text="Get Data" />   
57    </div>
58    </form>
59</body>
60</html>

Comments

Popular posts from this blog

JQuery lightbox image slideshow gallery in asp.net

Introduction: In this article I will explain how to create lightbox image slideshow in asp.net using JQuery. Description:  In previous post I explained about  Ajax SlideshowExtender sample  to display images slideshow. Now in this article I will explain how to create lightbox image slideshow in asp.net using JQuery. In many websites generally we will see different types of slideshows like whenever we click on image that is automatically open with lightbox effect and we have a chance to see all the remaining images by press next or previous options in slideshow. All these Slideshows are implemented by using JQuery plugins. After seen those slideshows I decided to write post to use JQuery plugins to implement beautiful slideshown in asp.net.  To implement this one I am using  previous post  insert and display images from folder based on imagepath in database  because in that post I explained clearly how to insert images into our project folder a...

Editing Child GridView in Nested GridView

Editing Child GridView in Nested GridView In this article we will explore how to edit child gridview in the nested gridview.   Let''s write some code. Step 1:  Add scriptmanager in the aspx page. < asp : ScriptManager   ID ="ScriptManager1"   runat ="server"   EnablePageMethods ="true"> </ asp : ScriptManager > Step 2:  Add below stylesheet for modal popup. < style   type ="text/css">        .modalBackground        {              background-color : Gray;              filter : alpha(opacity=80);              opacity : 0.5;       }        .ModalWindow        {     ...

Add Edit Update Records in GridView using Modal Popup in ASP.Net

Add Edit Update Records in GridView using Modal Popup in ASP.Net In this article, I’ll explain how to Add and Edit records in ASP.Net GridView control using ASP.Net AJAX Control Toolkit Modal Popup Extender. Database For this tutorial, I am using Microsoft’s NorthWind database. You can download it using the following link. Download Northwind Database Connection string Below is the connection string to connect to the database. < connectionStrings >     < add name = " conString "      connectionString = " Data Source=.\SQLExpress;database=Northwind;     Integrated Security=true " /> </ connectionStrings >   HTML Markup Below is the HTML Markup of the page. Below you will notice that I have placed a Script Manager and an ASP.Net Update Panel on the page. Inside the Update Panel I have placed an ASP.Net GridView Control along with a Modal Popup Extender that will be used to Add or...