how to perfrom event on textbox changed

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i have a textbox. i want when i have write something on textbox and when i click outside the textbox then on the basics of that value the action must be performed. which event perform on this type of problem

Posted 8-Dec-13 21:50pm

Arvind Labhi

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JoCodes · Answer 1 · 2013-12-08T21:57:00

Solution 1

You can use textchanged event or Onblur event of the textbox .

Posted 8-Dec-13 21:57pm

JoCodes

Karthik_Mahalingam · Answer 2 · 2013-12-08T22:21:00

Hi Arvind,

If you want to perform the action on client side ( ie: javascript ) you can use onblur event.

<asp:TextBox ID="txt" runat="server" onblur="javascript:dosomething()"></asp:TextBox>

JavaScript

var dosomething = function () {
    alert('you have lost the focus');
}

in server side, you can use TextChanged event,
Dont forget to put AutoPostBack=true

<asp:TextBox ID="txt" runat="server" AutoPostBack="true" OnTextChanged="txt_TextChangedEvent"></asp:TextBox>

C#

protected void txt_TextChangedEvent(object sender, EventArgs e)
       {

       }