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Is there any way to change the value of asp.net control?

  1. #1
    Dec 09, 2011, 3:59 AM

    Is there any way to change the value of asp.net control?

    For example, I have a <ext:Button> and a <asp:Label>
    If I click the button, I want to change the value of label
    Is there any way to change the value of asp.net control? Thanks!
  2. #2
    Dec 09, 2011, 4:05 AM
    Hi,

    I'm going to assume you're doing this in a DirectEvent handler. If yes, then just call .Render() on the <asp:Label> to re-render the Control.
    Geoffrey McGill
    Founder
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  3. #3
    Dec 09, 2011, 5:37 AM
    Quote Originally Posted by geoffrey.mcgill View Post
    Hi,

    I'm going to assume you're doing this in a DirectEvent handler. If yes, then just call .Render() on the <asp:Label> to re-render the Control.

    Thanks your reply, But can you tell me how to call .Render() on the <asp:Label>?
  4. #4
    Dec 09, 2011, 10:53 AM
    Hi,

    I think Geoffrey meant the Update method.

    Example
    <%@ Page Language="C#" %>

<%@ Register Assembly="Ext.Net" Namespace="Ext.Net" TagPrefix="ext" %>

<script runat="server">
    protected void SetValue(object sender, DirectEventArgs e)
    {
        this.Label1.Text = "New value";
        this.Label1.Update();
    }
</script>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>Ext.Net Example</title>
</head>
<body>
    <form runat="server">
        <ext:ResourceManager runat="server" />
        <asp:Label ID="Label1" runat="server" Text="Initial value" />
        <ext:Button runat="server" Text="Set a new value" OnDirectClick="SetValue" />
    </form>
</body>
</html>
  5. #5
    Dec 09, 2011, 11:07 AM
    Hi!

    I have read the code above, but it seems that there is no such a function named Update in Label:
    http://msdn.microsoft.com/en-us/libr...(v=VS.80).aspx
  6. #6
    Dec 09, 2011, 11:09 AM
    That's right.

    But it's our extension method to update non Ext.NET controls during a DirectEvent.
    Last edited by Daniil; Dec 10, 2011 at 4:24 AM.
  7. #7
    Dec 10, 2011, 1:59 AM
    Extension Method?
    Oh, I see, thanks very much!

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