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Can't access the tag properties in the user control

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fly231

fly231

Programmer
May 29, 2005
24
GB
Can someone please help me with this.

I can't access the tag properties in the user control.

I did this

Control UserControl1 =LoadControl("signupForm1.ascx");
PlaceHolderSignupPhone.Controls.Add(UserControl1);

It works fine.

But I cant access the tag properties in the user control.
All I have in the signupForm1.ascx file is asp textboxes, checkBoxes and Dopdownlist items.
I just want to access their properties when a onClick event get the value of the TextBox.
I get an error saying
"The type or namespace name 'phoneNo1' could not be found"
Where phoneNo1 is a TextBox ID.

It would be great if anyone can help me with this.

Thanks
 
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You'll need to change the User Control Textbox to Public e.g.
Code: 
[b]Public[/b] WithEvents TextBox1 As System.Web.UI.WebControls.TextBox

--------------------------------------------------------------------------------------------------------------------------------------------

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Thanks for the quick response ca8msm.
I tried what you said. But it gives an error.
I'm very new to ASP.net so forgive me if I sound bumb.
HE's my ascx page:



script language="C#" runat="server">
public TextBox phoneNo1;

</script>

<table align="left" cellpadding="5" cellspacing="0" border="0">
<tr>
<td><asp:textbox ID="phoneNo1" runat="server"/></td>
<td><asp:checkbox runat="server" Checked="true" ID="cps1"/></td>
<td><asp:checkbox runat="server" ID="transfer1"/></td>
</tr>
</table>


I get the error saying
"'ASP.signupForm3_ascx' already contains a definition for 'phoneNo1'"

So how else do i make the TextBox public?
It wouls be great if you can tell me how to do it in c# cause I don't know vb.net.

Thanks
 
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You can aslo use signupForm1.FindControl.
The Textbox is already declared in the auto generate code.

Maybe try
public System.Web.UI.Webcontrols.Textbox MyTextBox = phoneNo1;

No sure but you may have to do set
MyTextBox = phoneNo1;
in page_load
 
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Or try this:
public System.Web.UI.Webcontrols.Textbox MyTextBox
{
get
{
return phoneNo1;
}
}
 
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Thanks for the response RTomes,

I tried what you said and I get this error
"The type or namespace name 'Webcontrols' does not exist in the class or namespace 'System.Web.UI' "

Not really sure why ..
 
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C# is case sensative.
Cap the C in WebControls
System.Web.UI.WebControls.TextBox
 
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Hi,

I tried that as well, I can't get it to work. May be it's just my lack of knowlege about ASP.Net.

I'll give past both the file here so, may be you can tell me what I should do.

Here's the Main ASPX file
Code: 
<%@ Page Language="C#" debug="true"  %>
<%@ Import namespace="System.Data" %>
<%@ Import namespace="System.Web.UI.HtmlControls" %> 
<HTML>
<HEAD>
<title>test</title>		
<script language="C#" runat="server">	
	void Page_Load(Object sender, EventArgs e) {    
		if (!IsPostBack) 
		{  
			Control UserControl1 = LoadControl("includes/signupForm1.ascx");
			PlaceHolderSignup1.Controls.Add(UserControl1);
			Control UserControl2 = LoadControl("includes/signupForm2.ascx");
			PlaceHolderSignup2.Controls.Add(UserControl2);
		}	
    }
	void doSomething(Object sender, EventArgs e)
	{
		Response.Write(UserControl1.MyTextBox.Text);
	}	
</SCRIPT>

</HEAD>
	<body >
	<form method="post" id="formSignup" name="formSignup" runat=server >				
	<table>
		<tr><td><asp:PlaceHolder runat="server" id="PlaceHolderSignupPhone" /></td></tr>
		<tr><td><asp:PlaceHolder runat="server" id="PlaceHolderSignupADSL" /> </td></tr>						
		<tr><td align="right"><asp:Button Text="Submit" OnClick="doSomething" runat="server" id="btnSubmitForm" /> </td></tr>					
	</table>	
    </form>
	</body>
</HTML>
------------------------------------
Here is the signupForm1.ascx , the ASCX file
Code: 
<script language="C#" runat="server">
public System.Web.UI.WebControls.TextBox MyTextBox  
{
	get{
		return phoneNo1;
	}
}
</script>		

<table align="left" cellpadding="5" cellspacing="0" border="0">
	<tr>
	<td><asp:textbox ID="phoneNo1" runat="server"/></td>
	<td><asp:checkbox runat="server" Checked="true" ID="cps1"/></td>
	<td><asp:checkbox runat="server" ID="transfer1"/></td>
	</tr>
</table>

I just want to get the values from the textBoxes and checkboxes when an OnClick event occurs.

I would appreciate any help on this.

Thanks
 
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Sorry there's a small mistake on the code forgot to change it .
PlaceHolderSignupADSL should be PlaceHolderSignup1 and
PlaceHolderSignupPhone should be PlaceHolderSignup2

Thanks.
 
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You need to declare your user control in the ASPX code behind as well, are your doing that?

private signupForm signupForm1;

You access the text box like:
signupForm1.MyTextBox.Text="Hello";
 
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Sorry , I do not understand what you are refering to.
The code above is all there is.

"sinupForm1" is the ASCX file I have shown above. It's not a class. sinupForm2 is a similar ASCX file with different textBoxes.

it dispalys everying fine ,
the problem comes when I want to access the textBox in the sinupForm1. I tried various methods but it doesnt seem to work.

Thanks
 
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Thank for all the help.

I tried the FindControl method and it worked this time.

Here's the code I used, if this will help anyone.

Code: 
<%@ Page Language="C#" debug="true"  %>
<%@ Import namespace="System.Data" %>
<%@ Import namespace="System.Web.UI.HtmlControls" %> 
<%@ Import namespace="System.Web.UI.WebControls" %>
<HTML>
<HEAD>
<title>test</title>		
<script language="C#" runat="server">
public Control UserControl1;
public Control UserControl2;
public TextBox tempStr;
public string tempText;
	
	void Page_Load(Object sender, EventArgs e) {    
		if (!IsPostBack) 
		{  
			
		}
			UserControl1 = LoadControl("signupForm1.ascx");
			PlaceHolderSignup1.Controls.Add(UserControl1);
			UserControl2 = LoadControl("signupForm2.ascx");
			PlaceHolderSignup2.Controls.Add(UserControl2);
			
				
    }
	void doSomething(Object sender, EventArgs e)
	{
		
		tempStr=((TextBox)this.UserControl1.FindControl("phoneNo1"));		
		Response.Write("tempStr :"+tempStr.Text);
	}	
</SCRIPT>

</HEAD>
	<body >
	<form method="post" id="formSignup" name="formSignup" runat=server >				
	<table>
		<tr><td><asp:PlaceHolder runat="server" id="PlaceHolderSignup1" /></td></tr>
		<tr><td><asp:PlaceHolder runat="server" id="PlaceHolderSignup2" /> </td></tr>						
		<tr><td align="right"><asp:Button Text="Submit" OnClick="doSomething" runat="server" id="btnSubmitForm" /> </td></tr>					
	</table>	
    </form>
	</body>
</HTML>
 
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Code: 
UserControl UserControl1;
UserControl UserControl2; 

<script language="C#" runat="server">    
    void Page_Load(Object sender, EventArgs e) {    
        if (!IsPostBack) 
        {  
            UserControl1 = LoadControl("includes/signupForm1.ascx");
            PlaceHolderSignup1.Controls.Add(UserControl1);
            UserControl2 = LoadControl("includes/signupForm2.ascx");
            PlaceHolderSignup2.Controls.Add(UserControl2);
        }    
    }
    void doSomething(Object sender, EventArgs e)
    {
        Response.Write(UserControl1.MyTextBox.Text);
    }    
</SCRIPT>





 
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Hi RTomes, thanks for the info

I don't know why but, way you said doesn't work.

Get an error
'System.Web.UI.Control' does not contain a definition for 'MyTextBox'

Plus what if you have about 50 text boxes and checkBoxes.
Wouldn't it be easier just to use the find FindControl in a loop. Something like this

Code: 
for(int i=1;i<51;i++)
{
 tempTextBox=((TextBox)this.UserControl1.FindControl("phoneNo"+i));
 Response.Write(tempTextBox.Text);
}

Thanks..
 
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I believe if you look above that was my very first sugestion.

You can also use signupForm1.FindControl
 
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True, Thanks for that.

When you first said it, I tried it but it didn't work because I was loading the user control inside
"if (!IsPostBack)" like below.

Code: 
if (!IsPostBack) 
{  
            UserControl1 = LoadControl("includes/signupForm1.ascx");
            PlaceHolderSignup1.Controls.Add(UserControl1);
            UserControl2 = LoadControl("includes/signupForm2.ascx");
            PlaceHolderSignup2.Controls.Add(UserControl2);
}

but later when I put it outside the "if (!IsPostBack)" , it started working.

Do you know why this is? I can't see a reason why it didn't work inside "if (!IsPostBack)" .

Thanks again for all the help.



 
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