Put TagName of user control into variable.

[GregD]

How can I grab the tag names of all the user controls currently loaded on a page... the tag names are specified by the @Register command at the top of the page like so:

 

<%@ Register TagPrefix="CMS" TagName="LoginControl" Src="login.ascx" %>
<%@ Register TagPrefix="CMS" TagName="ModSecDesc" Src="secdesc.ascx" %>

 

So for this page I want to get LoginControl and ModSecDesc into 2 different variables. Im pretty sure its the system.web.ui.UserControlControlBuilder class that I should get the property from but how do I do it?

 

Thanks!

[wessamzeidan]

I don't know why you need the tagname. If you want to access properties/methods of the usercontrols, you can use either of these 2 ways.

 

1. Declare a variable of the same type and same name of your usercontrol

eg. Dim Login1 As New Login

 

2.You can use the FindControl method to get a reference to your usercontrol, but you have to cast it to the proper type

eg. Ctype(Me.FindControl("Login1"),Login).Visible=True

[GregD]

I don't know why you need the tagname. If you want to access properties/methods of the usercontrols, you can use either of these 2 ways.

 

1. Declare a variable of the same type and same name of your usercontrol

eg. Dim Login1 As New Login

 

2.You can use the FindControl method to get a reference to your usercontrol, but you have to cast it to the proper type

eg. Ctype(Me.FindControl("Login1"),Login).Visible=True

 

Thanks! Yep quite right...

 

How would I find all the user control ID's on a page for the class ModSecDesc ? i.e. Ctype(Me.FindControl("*"),ModSecDesc)

 

Obviously it wouldnt be * but i need to get all the ids without actually knowing them if you see what i mean. I had a look at the page class but could only find Page.ClientID which only works if you know the ID.

 

Thanks

[bri189a]

You could use Page.Controls and recursively enumerate through all the controls that way.

 

You shouldn't use CType either:

http://www.xtremedotnettalk.com/showthread.php?t=80277&highlight=directcast+ctype

 

Also (from MSDN):

...the run-time performance of DirectCast is better than that of CType.

[GregD]

I tried using the following code which I found on http://aspnet.4guysfromrolla.com/articles/082102-1.aspx

 

void IterateThroughChildren(Control parent)
{
 foreach (Control c in parent.Controls)
 {
   if (c.GetType().ToString().Equals("System.Web.UI.WebControls.TextBox")
         && c.ID == null)
   {
     // ...do something...
   }
       
   if (c.Controls.Count > 0)
   {          
     IterateThroughChildren(c);          
   }
 }
}

 

But it only iterates through the child controls not the parents i.e. my custom user controls. I tried using the user control class instead of just the control class but it doesn't work. Any ideas?

 

Im trying to get all the IDs for the control type ModSecDesc:

 

<CMS:ModSecDesc id="blah" runat="server"/>
<CMS:ModSecDesc id="moo" runat="server"/>

Edited October 1, 2004 by GregD

[GregD]

Worked it out but damm was not easy at all...

 

Sub WalkControls(ByVal parent As Control, ByVal level As Integer)

Dim ctrl As Control
For Each ctrl In parent.Controls
If ctrl.GetType().BaseType.Tostring = "CMS.ModSecDesc"
Response.Write("<b> " & ctrl.ID & "</b> " & ctrl.GetType().FullName & "<br>")
End If
       ' **** Recurse into this item's Controls collection if it's not empty
If ctrl.Controls.Count > 0 Then
WalkControls(ctrl, level + 1)
End If

 

And in Page_Load:

 

WalkControls(Page, 1)

 

Found it here and adapted it a bit using basetype:

 

http://www.dotnet247.com/247reference/msgs/5/29593.aspx

Edited October 1, 2004 by GregD