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Referencing a control within a usercontrol on a webform 1

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nimarii

nimarii

MIS
Jan 26, 2004
213
US
Hello,

I have a webform that has usercontrol (DateTimeSpan), and a "View Report" button.

What I need to do, is when the button is clicked, I need to ensure that all the fields on the DateTimeSpan usercontrol are populated before continuing.

How can I reference the controls within a usercontrol from the button's onclick event in webform.aspx.cs?

Thanks!
 
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the ideal to do this u have to create "Properties" and methods in the ASCX.

another approach is to access the Controls collection of the ASCX object...

Known is handfull, Unknown is worldfull
 
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how do i access the controls collection of the ASCX object?
 
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sample code:

ASCX CODE
Code: 
<%@ Control Language="VB" %>
<input id="TheTextField" onclick="Clicked" type="text" runat="server">
<asp:Label id="Testing" runat="server"></asp:Label>

ASPX CODE
Code: 
<%@ Page Language="VB" %>
<%@ Register TagPrefix="Acme" TagName="Address" Src="test.ascx" %>
<script runat="server">
	sub page_load
		Dim Ctrl as Control
		for each Ctrl in ASD.Controls
			response.write(Ctrl.Id & "<br>")
		next
	end sub
</script>
<html>
<head>
</head>
<body>
    <form method="post" runat="server">
        <Acme:Address id="ASD" runat="Server"/>
    </form>
</body>
</html>

Known is handfull, Unknown is worldfull
 
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thanks for the sample code, but I'm actually trying to access the controls of the ascx from the code-behind file, the webform.aspx.cs file....

here's the pseudo code of what I'm trying to achieve:
Code: 
private void Button_Click(object sender, System.EventArgs e)
		{
if(usercontrol.datetextbox.value != null) then
			Label3.Enabled = true;
			DropDownList2.Enabled = true;
			ViewReports.Enabled = true;
			DropDownList3.Enabled = true;
		}

am i taking the wrong approach to this?
 
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the code i gave will also work with with CodeBehind:

>>usercontrol.datetextbox

must be
usercontrol.Controls(DateTextBoxIndexNumber)

DateTextBoxIndexNumber = Position of the textbox (ie first control or second or third etc...)


Known is handfull, Unknown is worldfull
 
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thanks vbkris, but I'm getting the following error now when I compile:
Code: 
The type or namespace name 'DateTimeSpan1' could not be found (are you missing a using directive or an assembly reference?)

DateTimeSpan1 is the id of the usercontrol....i dont know how to reference the ascx file in my code-behind file...it looks like i need to declare it somehow?
 
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hmm, that could be a problem.

try this:

Dim MyUserControl=FindControl("UserControlName")
response.write(MyUserControl.Conrols(0).id) 'assuming the field that u r trying to access s the first field in the ASCX file. u could also use the FindControl method of the MyUserControl file.


dim TheTextField=MyControl.FindControl("FieldID")
response.write(TheTextField.value)


Known is handfull, Unknown is worldfull
 
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did that work???

Known is handfull, Unknown is worldfull
 
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i'm still working it out, i think maybe a few things were lost in translation to c#...

i think i'm getting close, will let know, thanks!!!!
 
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ok, so after tooling around with trying to declare the variable as an object, and then trying to pull a string value from it, etc etc, and getting nowhere, i decided to take a different approach.

thanks so much for your attention on this one vbkris, i genuinely appreciate it.

i instead used the validationsummary object in the ascx page, and used the "causesvalidation" property for the button on the aspx page....

phew.
 
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