Trying to Cast UserControl to Interface with Reflection

  • Thread starter Thread starter sippyuconn
  • Start date Start date
S

sippyuconn

Hi

Trying to use Reflection to Create a UserControl then get at Interface on
UserControl which defines an Event. Then add that Event to EventHandler
But looks like I am getting exception on Cast ???

Thanks

On this statment - I get Exception

((IGlobalSettings)obj).OnSettingsModified += new
EventHandler(Configuration_OnValid);


Unable to cast object of type 'UserControls.Setting' to type
'UserControls.ISettings'.


public interface ISettings
{

event EventHandler OnSettingsModified;
}


public Class Settings: UserControl, ISettings
{
private void textEdit_EditValueChanged(object sender, EventArgs e)
{
if (OnSettingsModified != null)
{
OnSettingsModified.Invoke(sender, e);
}

}

}

My App
======

foreach (Type type in asm.GetTypes())
{
if (type.IsClass == true )
{
bClass = false;
foreach (Type interfaceType in type.GetInterfaces())
{
if (interfaceType.FullName.Contains("ISettings"))
{

object obj =
(IGlobalSettings)Activator.CreateInstance(type) as object;
((IGlobalSettings)obj).OnSettingsModified += new
EventHandler(Configuration_OnValid);



}
}
}
}






private void Configuration_OnValid(object sender, System.EventArgs e)
{
UpdateEnableSave();
}
 
Hi sippyuconn,

Thank you for using Microsoft Managed Newsgroup Service, my name is Zhi-Xin
Ye, I'm assigned to help you on this issue.

The code you post is not complete, would you please send me a code sample
to reproduce this exception? My email is (e-mail address removed) .

I'm look forward to your reply.

Sincerely,
Zhi-Xin Ye
Microsoft Managed Newsgroup Support Team

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