Why my dropdown list event does not get fired? RSS

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  Peter Cong

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  527 Points

  681 Posts

  Why my dropdown list event does not get fired?

  Jan 04, 2013 04:23 PM|LINK

  Hi, I have a dropdownlist field call "NextYear" in my webform with this code:

  onselectedindexchanged="ViewByYear_SelectedIndexChanged" AutoPastBack="True"

  in my .cs code, I have class ViewByYear_SelectedIndexChanged with some c# codes, but when I click the NextYear dropdownlist, the associated c# code does not get fired in my debug mode.

  Anybody know what is wrong with my codes?

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  Specs

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  152 Posts

  Re: Why my dropdown list event does not get fired?

  Jan 04, 2013 04:26 PM|LINK

  Can you please post more of the aspx code ?

  *** If this post helps you, then Mark this post as Answer ***
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  Anil Srivast...

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  292 Posts

  Re: Why my dropdown list event does not get fired?

  Jan 04, 2013 04:40 PM|LINK

  mark up

  <form id="form1" runat="server">
      <asp:DropDownList ID="NextYear" runat="server" AutoPostBack="True"
          onselectedindexchanged="DropDownList1_SelectedIndexChanged" Width =120>
          <asp:ListItem>Red</asp:ListItem>
          <asp:ListItem>Green</asp:ListItem>
          <asp:ListItem>Blue</asp:ListItem>
          <asp:ListItem></asp:ListItem>
      </asp:DropDownList>
     
     </form>

  code behind

   protected void NextYear_SelectedIndexChanged(object sender, EventArgs e)
      {
          Response.Write(" You selected  Me   "+NextYear.SelectedItem.Text  );
      }

  Let me know if this works

  thanking you

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  asad.aries

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  37 Posts

  Re: Why my dropdown list event does not get fired?

  Jan 04, 2013 04:46 PM|LINK

  Your Markup says -> onselectedindexchanged="DropDownList1_SelectedIndexChanged"

  but you event handler name is NextYear_SelectedIndexChanged

  thats why your event is not getting fired

  • Marked as answer by Peter Cong on Jan 06, 2013 11:37 PM
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  Peter Cong

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  527 Points

  681 Posts

  Re: Why my dropdown list event does not get fired?

  Jan 06, 2013 11:37 PM|LINK

  The " AutoPastBack="True"" was wrong, it should be AutoPostBack = true.

  As well, ti should be  NextYear_SelectedIndexChanged

  Thanks for all responses,