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New Message on BDOTNET
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From: Sijin
Message 4 in Discussion
Dear Saurabh, Intresting question. Since interfaces can be implemented by both
Reference and Value Types, it needs to support both semantics depending on the type
that is implementing the interface. To test this out i created a form with two
propertyGrids and the following interfaces and classses
public interface ITest
{
}
public class TestClass : ITest
{
}
public struct TestStruct : ITest
{
}
As you can see TestClass is a Ref type and TestStruct is a Value type.
i wrote this code in the Form_load event
private void Form1_Load(object sender, System.EventArgs e)
{
TestClass tc = new TestClass();
ITest itc = (ITest)tc;
propertyGrid1.SelectedObject = itc.GetType();
TestStruct ts = new TestStruct();
ITest its = (ITest)ts;
propertyGrid2.SelectedObject = its.GetType();
}
When we run the app we see that,
itc.ValueType is false and its.ValueType is true.
So interface is a has the same semantics as the type that implements the interface.
Hope that answers your query. :)
Sijin Joseph
http://www.indiangeek.net
http://weblogs.asp.net/sjoseph
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