Check Uncheck All Checkboxes in Gridview Using JQuery

Question

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here not working in all check box why?

jquery

<script type="text/javascript" language="javascript">

function CheckAll(Checkbox) {
var GridView1 = document.getElementById("<%=GridView1.ClientID %>");
for (i = 1; i < GridView1.rows.length; i++) {
GridView1.rows[i].cells[3].getElementsByTagName("INPUT")[0].checked = Checkbox.checked;
}
}

</script>

ASP.Code

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataSourceID="SqlDataSource1" Width="624px" CssClass="grid"
AllowPaging="True" AllowSorting="True" BackColor="White" OnRowEditing="GridView1_RowEditing" OnRowCancelingEdit="GridView1_RowCancelingEdit"
BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" CellPadding="3" PageSize = "5"
OnRowUpdating="GridView1_RowUpdating" DataKeyNames="id">

<columns> <asp:TemplateField>
<HeaderTemplate>
<asp:CheckBox ID="chkHeader" runat="server" onclick="CheckAll(this)"/>
</HeaderTemplate>
<itemtemplate>
<asp:CheckBox ID="chkchild" runat="server" />

<asp:BoundField DataField="id" HeaderText="id" SortExpression="id" InsertVisible="False" ReadOnly="True" />
<asp:BoundField DataField="updatedby" HeaderText="updatedby" SortExpression="updatedby" />
<asp:BoundField DataField="username" HeaderText="username" SortExpression="username" />
<asp:BoundField DataField="password" HeaderText="password" SortExpression="password" />
<asp:BoundField DataField="mail" HeaderText="mail" SortExpression="mail" />

<asp:BoundField DataField="imagename" HeaderText="imagename" SortExpression="imagename" />

<asp:ImageField DataImageUrlField="uploadimage" HeaderText="uploadimage" ControlStyle-Width = "80" ControlStyle-Height = "100">
<controlstyle height="100px" width="80px">

<asp:CommandField ShowEditButton="True" />

<footerstyle backcolor="White" forecolor="#000066">
<HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
<pagerstyle backcolor="White" forecolor="#000066" horizontalalign="Left">
<rowstyle forecolor="#000066">
<SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
<sortedascendingcellstyle backcolor="#F1F1F1">
<sortedascendingheaderstyle backcolor="#007DBB">
<sorteddescendingcellstyle backcolor="#CAC9C9">
<sorteddescendingheaderstyle backcolor="#00547E">

Posted 31-Oct-14 21:25pm

Member 10918596

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Comments

Robert Welliever 1-Nov-14 3:37am

That's not JQuery, that's just plain JavaScript.

Member 10918596 1-Nov-14 3:40am

ya sorry that s javasript

Robert Welliever 1-Nov-14 3:40am

Also I see you don't have the variable i instantiated correctly.
Instead of:
for (i = 1; i < GridView1.rows.length; i++)
use:
for (var i = 1; i < GridView1.rows.length; i++)

DamithSL 1-Nov-14 4:17am

Robert, this is javascript. we can directly assign value and continue using it.

Robert Welliever 1-Nov-14 3:46am

One other thing. It is very difficult to debug JavaScript (as you have noticed). If you debug in Chrome, you can right click the page and then select "Inspect Element" from the context menu. You will see a little red circled X if there are JavaScript errors, and it will explain the errors. Internet Explorer will not give you that information as easily.

Member 10918596 1-Nov-14 3:48am

not working robert

Robert Welliever 1-Nov-14 3:59am

So how many errors does Chrome report when you inspect the page? What does the code do if you step debug with IE?

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abhijeetgupta1988 · Accepted Answer · 2014-10-31T21:51:00

Solution 1

you need to use proper index of GridView column.

In your case the index should be 0.

Change this line :

C#

GridView1.rows[i].cells[3].getElementsByTagName("INPUT")[0].checked = Checkbox.checked;

with this

C#

GridView1.rows[i].cells[0].getElementsByTagName("INPUT")[0].checked = Checkbox.checked;

let me know if it works for you!

Posted 31-Oct-14 21:51pm

abhijeetgupta1988

Comments

Member 10918596 1-Nov-14 4:00am

thanks it s working

Member 10918596 1-Nov-14 4:02am

pls explain this row

Member 10918596 1-Nov-14 4:08am

i solved my self robert see above code

abhijeetgupta1988 1-Nov-14 4:08am

In your javascript GridView1 collection holds the array of rows.
You iterated through all rows
i.e. GridView1.rows[i]
and in each row's 1 cell i.e. cells[0] ,first input tags value i.e. getElementsByTagName("INPUT")[0].checked is set by DOM operation.

abhijeetgupta1988 1-Nov-14 4:16am

@Robert This code has worked for him! I also used this in several sites.
I know its javascript so will not work in JS disabled browser,will take lot of time if no. of rows are in thousands.

kindly share your view on its other bugs and please suggest some alternates so we can also benefit!