I have this exact issue
ASP.net can’t update page from event handler
and it's been answered! My only problem is I don't really understand the solution. How does one Invoke the control when setting the property.
I have a label control but there doesn't seem to be an Invoke property/method on it.
I tried this...
PropertyDescriptorCollection properties = TypeDescriptor.GetProperties(Label1);
PropertyDescriptor myProperty = properties.Find("Text", false);
myProperty.SetValue(Label1, "my value");
but that seemed to be the same as
label1.text = "my value"
which didn't work