avoid refresh in a button click event RSS

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  Catherine Sh...

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  23372 Points

  2490 Posts

  Microsoft

  Re: avoid refresh in a button click event

  Feb 24, 2012 02:41 AM|LINK

  Hi raja_durai1,

  I am not sure whether I have understood your meaning. Assuming that you don't want to refresh the CheckBox when you click the Button, you can use UpdatePanel control. However, you need to modify your code and move the CheckBox out of the UpdatePanel. In order to help you understand, I have written a demo below:

  In the .aspx

  <asp:ScriptManager ID="ScriptManager1" runat="server" />
          <asp:UpdatePanel runat="server" id="UpdatePanel" updatemode="Conditional">
              <ContentTemplate>
                  <asp:Label runat="server" id="DateTimeLabel1" />
                  <asp:Button runat="server" id="UpdateButton1" onclick="UpdateButton_Click" text="Update" />
              </ContentTemplate>
          </asp:UpdatePanel>
          <asp:CheckBox ID="CheckBox1" runat="server" AutoPostBack="true"
              oncheckedchanged="CheckBox1_CheckedChanged" />
          <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>

  In the code behind

   protected void Page_Load(object sender, EventArgs e)
      {
          TextBox1.Text = DateTime.Now.ToString();
      }
      protected void UpdateButton_Click(object sender, EventArgs e)
      {
          DateTimeLabel1.Text = DateTime.Now.ToString();       
      }
  
      protected void CheckBox1_CheckedChanged(object sender, EventArgs e)
      {
  
      }

  Please test it locally. When you click the Button and CheckBox, you will find the difference.

  Note that when you set AutoPostBack="true", the event CheckBox1_CheckedChanged will occur and make a postback. When you set it false, it willn't do a postback. In addition, I would suggest you to use IE Develop Tools to debug step by step.

  Best wishes,

  Please mark the replies as answers if they help or unmark if not.
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  • Edited by Catherine Shan - MSFT on Feb 24, 2012 02:45 AM
  • Marked as answer by Catherine Shan - MSFT on Feb 29, 2012 01:39 AM
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  rossisdead2

  Participant

  1313 Points

  300 Posts

  Re: avoid refresh in a button click event

  Feb 24, 2012 10:08 PM|LINK

  Vijay Giggs

  Hi,

  What you want to achive exactly???

  Don't write onclick event of button. Page won't get postbacked!!!

  The page will postback regardless of whether or not the button has an OnClick handler attached to it.

  www.rossisdead.com