Question

I want to set the textbox contol located in the panel control via code

I know to retrieve the inputted value in the textbox control:

string myVal = Request.Form["txtResult"]; 

I want to set the txtResult.text = “some text”;

makeup snippet:

<asp:Panel ID="Panel1" runat="server" Style="display: none" Width="233px">
       <asp:TextBox ID="txtResult" runat="server" AutoPostBack="True"></asp:TextBox>
   <br />
   <div align="center">
      <asp:Button ID="OkButton" runat="server" Text="OK" />
      <asp:Button ID="CancelButton" runat="server" Text="Cancel" />
   </div>
   </asp:Panel>

txtResult is not available within code, I tried to see if it is available in the page_load, it’s not

texReults was a typo, its txtResult, I updated the ID

the intellisense does not recognize any cntr by the name txtResult

its a new web application and the panel visibility=True

maybee this wil help, above the snipet, I use ScriptManager from the AJAX Exstension

I am aware of he Asnchronius affects, partial potback, etc.

Answer 1

It’s a managed control, you should be able to set it on the Page_Load event:

protected void Page_Load(object sender, System.EventArgs e)
{
    txtResult.Text = "some text";
}

Update: Based on your update, there are a couple of things that you would need to check:

• Spelling: Are you sure you’re spelling the control name correctly?
  Its ID in your code is “txtResults”, but you’re referencing it as
  “txtResult”.
• Designer: Did you copy the aspx page or bypass VS in some way for this page? If so check the .designer file for the reference to the control: i.e. “Page1.aspx.designer.cs”
• Visibility: Is the Panel control’s visibility set to true? If not, then it won’t render the controls that are contained within it.

Update 2: If you’re doing this through scriptmanager, then I highly recommend that you read through this: http://www.wrox.com/WileyCDA/Section/Using-the-ASP-NET-AJAX-ScriptManager.id-305492.html