How to select main checkbox if all checkboxes are checked

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Hi,

I have checkbox list and main check box, if i selects all the check boxes manually in checkbox list then main check box automatically need to be checked using javascript.

<asp:CheckBox ID="CheckBox1" runat="server" AutoPostBack="True" OnCheckedChanged="CheckBox1_CheckedChanged" Text="Select All" Visible="false" />

<asp:CheckBoxList ID="lbxProjectList" runat="server" >

Looks Like Below Format

HTML

CheckboxSelectAll Projects
1Checkboxlist Project1
2Checkboxlist Project2
3Checkboxlist Project3

Posted 30-Oct-14 0:42am

santoshkumar413

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3 solutions

Solution 2

this might help you..
checkboxes in Gridview Header[^]

Posted 30-Oct-14 0:53am

kedar001

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santoshkumar413 30-Oct-14 7:10am

its not working for checkbox list. please suggest me any other.

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MukeshSagar · Accepted Answer · 2014-10-30T00:46:00

Solution 1

In this case you handle the event for the Checkboxlist to check if all the items are selected then select the main checkbox otherwise deselect the main checkbox

Posted 30-Oct-14 0:46am

MukeshSagar

Comments

santoshkumar413 30-Oct-14 6:55am

Events In CheckBox List are only serverside there is no client side events for chekbox list. Please if you have any relevant code please suggest me.

MukeshSagar 30-Oct-14 7:29am

Use JQuery code to check the number of selected checked boxes

MukeshSagar 30-Oct-14 7:31am

refer the link :
http://stackoverflow.com/questions/18181909/count-the-number-of-checkboxlist-and-if-checked-items-more-than-1-check-another

Praveen_P · Accepted Answer · 2014-10-30T01:30:00

Solution 3

Hi
check the below link

http://www.aspsnippets.com/Articles/Check-Uncheck-all-items-in-ASPNet-CheckBoxList-using-jQuery.aspx[^]

Thanks

Posted 30-Oct-14 1:30am

Praveen_P

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santoshkumar413 30-Oct-14 7:34am

Thank You Praveen I was looking solution of this kind

Praveen_P 30-Oct-14 7:38am

you are welcome ..