Trying to Cast UserControl to Interface with Reflection

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();
}
 
Z

Zhi-Xin Ye [MSFT]

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

Delighting our customers is our #1 priority. We welcome your comments and
suggestions about how we can improve the support we provide to you. Please
feel free to let my manager know what you think of the level of service
provided. You can send feedback directly to my manager at:
(e-mail address removed).

==================================================
Get notification to my posts through email? Please refer to
http://msdn.microsoft.com/en-us/subscriptions/aa948868.aspx#notifications.

Note: MSDN Managed Newsgroup support offering is for non-urgent issues
where an initial response from the community or a Microsoft Support
Engineer within 2 business day is acceptable. Please note that each follow
up response may take approximately 2 business days as the support
professional working with you may need further investigation to reach the
most efficient resolution. The offering is not appropriate for situations
that require urgent, real-time or phone-based interactions. Issues of this
nature are best handled working with a dedicated Microsoft Support Engineer
by contacting Microsoft Customer Support Services (CSS) at
http://msdn.microsoft.com/en-us/subscriptions/aa948874.aspx
==================================================
This posting is provided "AS IS" with no warranties, and confers no rights.
 

Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments. After that, you can post your question and our members will help you out.

Ask a Question

Top