> I have a class like so:
>
> public class MyClass
> {
>     public MyClass(double? x, double? y)
>     {
>     }
> }
>
> I have created a type converter for this class that converts MyClass to an
> InstanceDescriptor which renders a line of code like the following on a form
> when x and y are null:
>
> this.myComponent1.MyClassInstance = new MyClass(null, null);
>
> The designer deserialization mechanism in Visual Studio is able to correctly
> determine which constructor must be called on the MyClass class when
> entering design mode.
>
> However, if x and y are not null, and happen to have no decimal, the
> following line of code is rendered:
>
> this.myComponent1.MyClassInstance = new MyClass(2, 1);
>
> This causes an exception when the form is designed with an error about a
> constructor with Int32, Int32 signature not being found. It appears as
> though there is no implicit conversion (for some reason) from Int32 to
> Nullable<Double>.
>
> So far I have not been able to find a way to cause the InstanceDescriptor to
> render an explicit cast statement (double?) to ensure the constructor is
> called successfully.
>
> Has anyone experienced this problem before, and if so, how did you solve it?
>
> Thanks.
>
> -- Nathan
>
>

> I have a class like so:
>
> public class MyClass
> {
>     public MyClass(double? x, double? y)
>     {
>     }
> }
>
> I have created a type converter for this class that converts MyClass to an
> InstanceDescriptor which renders a line of code like the following on a form
> when x and y are null:
>
> this.myComponent1.MyClassInstance = new MyClass(null, null);
>
> The designer deserialization mechanism in Visual Studio is able to correctly
> determine which constructor must be called on the MyClass class when
> entering design mode.
>
> However, if x and y are not null, and happen to have no decimal, the
> following line of code is rendered:
>
> this.myComponent1.MyClassInstance = new MyClass(2, 1);
>
> This causes an exception when the form is designed with an error about a
> constructor with Int32, Int32 signature not being found. It appears as
> though there is no implicit conversion (for some reason) from Int32 to
> Nullable<Double>.
>
> So far I have not been able to find a way to cause the InstanceDescriptor to
> render an explicit cast statement (double?) to ensure the constructor is
> called successfully.
>
> Has anyone experienced this problem before, and if so, how did you solve it?
>
> Thanks.
>
> -- Nathan
>
>