nettellect wrote:

> I have a simple situation in which I want to use generics along with
> dynamic type assignment. Following code snippet can explain in more
> detail But I am unable to do that will anybody help me why?
>
> namespace genericTest
> {
> public partial class Form1 : Form
> {
> public Form1()
> {
> InitializeComponent();
> }
>
> private void button1_Click(object sender, EventArgs e)
> {
> Type X = System.Type.GetType("System.Int32");
> GetMyTypes<X> a = new GetMyTypes<X>();
> a.MyTypes = "Going out";
> MessageBox.Show(a.MyTypes.ToString());
>
> }
> }
> public class GetMyTypes<T>
> {
> T t;
> public T MyTypes
> {
> get { return t; }
> set { t = value; }
> }
> }
> }
>
>
> Errors
> Error 1 The type or namespace name 'X' could not be found (are you
> missing a using directive or an assembly reference?)

"Frans Bouma [C# MVP]" wrote:

> nettellect wrote:
>
> > I have a simple situation in which I want to use generics along with
> > dynamic type assignment. Following code snippet can explain in more
> > detail But I am unable to do that will anybody help me why?
> >
> > namespace genericTest
> > {
> > public partial class Form1 : Form
> > {
> > public Form1()
> > {
> > InitializeComponent();
> > }
> >
> > private void button1_Click(object sender, EventArgs e)
> > {
> > Type X = System.Type.GetType("System.Int32");
> > GetMyTypes<X> a = new GetMyTypes<X>();
> > a.MyTypes = "Going out";
> > MessageBox.Show(a.MyTypes.ToString());
> >
> > }
> > }
> > public class GetMyTypes<T>
> > {
> > T t;
> > public T MyTypes
> > {
> > get { return t; }
> > set { t = value; }
> > }
> > }
> > }
> >
> >
> > Errors
> > Error 1 The type or namespace name 'X' could not be found (are you
> > missing a using directive or an assembly reference?)
>
> Using generics always has to resolve to compile time correct code,
> i.e. the generic parameters have to be known at compile time. Your code
> doesn't obey that, 'x' is known at runtime. That's not going to work.
>
> So if you know 'x' at compile time (and your code does, it's an int),
> specify X as int.
>
> FB
>
> --
> ------------------------------------------------------------------------
> Lead developer of LLBLGen Pro, the productive O/R mapper for .NET
> LLBLGen Pro website: http://www.llblgen.com
> My .NET blog: http://weblogs.asp.net/fbouma
> Microsoft MVP (C#)
> ------------------------------------------------------------------------