How do I expose the columns collection of GridView control that is inside a user control
- by Christopher Edwards
See edit.
I want to be able to do this in the aspx that consumes the user control.
<uc:MyControl ID="MyGrid" runat="server">
<asp:BoundField DataField="FirstColumn" HeaderText="FirstColumn" />
<asp:BoundField DataField="SecondColumn" HeaderText="SecondColumn" />
</uc>
I have this code (which doesn't work). Any ideas what I am doing wrong?
VB
Partial Public Class MyControl
Inherits UserControl
<System.Web.UI.IDReferenceProperty(GetType(DataControlFieldCollection))> _
Public Property Columns() As DataControlFieldCollection
Get
Return MyGridView.Columns
End Get
Set(ByVal value As DataControlFieldCollection)
' The Columns collection of the GridView is ReadOnly, so I rebuild it
MyGridView.Columns.Clear()
For Each c As DataControlField In value
MyGridView.Columns.Add(c)
Next
End Set
End Property
...
End Class
C#
public partial class MyControl : UserControl
{
[System.Web.UI.IDReferenceProperty(typeof(DataControlFieldCollection))]
public DataControlFieldCollection Columns {
get { return MyGridView.Columns; }
set {
MyGridView.Columns.Clear();
foreach (DataControlField c in value) {
MyGridView.Columns.Add(c);
}
}
}
...
}
EDIT:
Actually it does work, but auto complete does not work between the uc:MyControl opening and closing tags and I get compiler warnings:-
Content is not allowed between the opening and closing tags for element 'MyControl'.
Validation (XHTML 1.0 Transitional): Element 'columns' is not supported.
Element 'BoundField' is not a known element. This can occur if there is a compilation error in the Web site, or the web.config file is missing.
So I guess I need to use some sort of directive to tell the complier to expect content between the tags.
Any ideas?
