Question

I create a user control with an event like this :

public partial class Person : System.Web.UI.UserControl
{
    public delegate void EditPersonHandler(object sender, EditPersonEventArgs e);
    public event EditPersonHandler EditPerson;
    protected void Page_Load(object sender, EventArgs e)
    {

    }
}

and this is my EditPersonEventArgs :

 public  class EditPersonEventArgs:EventArgs
{
    private int id;

    public int ID
    {
        get { return id; }
        set { id = value; }
    }
    public EditPersonEventArgs(int ID)
    {
        id = ID;
    }

}

And now i want to add this User control to my page and i do this :

<%@ Register TagPrefix="UControl" TagName="UControlPerson" Src="~/SimpleUC/Person.ascx" %>

<div>
    <UControl:UControlPerson ID="UControlPerson" runat="server"
                             OnEditPerson="UControlPerson_EditPerson" />
</div>

and this my Function to handle the OnSavePerson :

protected void UControlPerson_EditPerson(object sender, EditPersonEventArgs e)
    {

    }

I built the solution.
but when I render the page i get this error:

Description: An error occurred during the compilation of a resource required to service this
request. Please review the following specific error details and modify your source code 
appropriately. 


Compiler Error Message: CS0426: The type name 'SimpleUC' does not exist in the type 
'System.Web.UI.UserControl'

this is my name space:
namespace UserControl.SimpleUC

Answer 1

You have a namespace conflict, the UserControl part of your user control namespace UserControl.SimpleUC is being resolved as the name space System.Web.UI.UserControl.

The easiest way to resolve this issue would be to choose another namespace for your control. Possibly something similar like UserControls.SimpleUC