Dynamic call object in C#

[Michael]

Hi all :

in vb.net I know use the follow code can implement dynamic call
Dim asm As [Assembly] = [Assembly].LoadFrom(<File Name>)
Dim ty As Type = asm.GetType(<Ob ject Name and class name>)
Dim obj As Object = Activator.Creat eInstance(ty)
obj.popupmsg()

how can I implement in C#

Thx

[Peter Rilling]

Pretty much the same way, but you might need to cast the "obj" variable to
the type that has the desired method.
"Michael" <la********@gma il.com> wrote in message
news:eV******** ******@TK2MSFTN GP09.phx.gbl...

Hi all :

in vb.net I know use the follow code can implement dynamic call
Dim asm As [Assembly] = [Assembly].LoadFrom(<File Name>)
Dim ty As Type = asm.GetType(<Ob ject Name and class name>)
Dim obj As Object = Activator.Creat eInstance(ty)
obj.popupmsg()

how can I implement in C#

Thx

[Adam Clauss]

> Dim asm As [Assembly] = [Assembly].LoadFrom(<File Name>)

Dim ty As Type = asm.GetType(<Ob ject Name and class name>)
Dim obj As Object = Activator.Creat eInstance(ty)
obj.popupmsg()
Assembly asm = Assembly.LoadFr om(<FileName>);
Type ty = asm.GetType(<Ob ject Name and class name>);
object obj = Activator.Creat eInstance(ty);

Here you run into a problem (and I didn't realize your above code would work
in VB.Net).
The obj variable is of type 'object' - and the object class obviously does
not define the popupmsg() method.

You have two options.
1) If the code you are writing contains the definition for the 'real' type
of obj, you can cast it, and then call popupmsg:
SomeType someType = obj as SomeType;
if (someType != null)
{
someType.popupm sg();
}
2) If you do not have this definition, you will have to use reflection to
access the method and call it. Note - you may need to change the flags
passed to GetMethod:

MethodInfo popupMethod = ty.GetMethod("p opupmsg", BindingFlags.In stance |
BindingFlags.Pu blic);
if (popupMethod != null)
{
popupMethod.Inv oke(obj, null);
}
HTH

--
Adam Clauss

"Michael" <la********@gma il.com> wrote in message
news:eV******** ******@TK2MSFTN GP09.phx.gbl... Hi all :

in vb.net I know use the follow code can implement dynamic call
Dim asm As [Assembly] = [Assembly].LoadFrom(<File Name>)
Dim ty As Type = asm.GetType(<Ob ject Name and class name>)
Dim obj As Object = Activator.Creat eInstance(ty)
obj.popupmsg()

how can I implement in C#

Thx

[Adam Clauss]

"Adam Clauss" <ca*****@tamu.e du> wrote in message
news:11******** *****@corp.supe rnews.com...

Assembly asm = Assembly.LoadFr om(<FileName>);
Type ty = asm.GetType(<Ob ject Name and class name>);
object obj = Activator.Creat eInstance(ty); 2) If you do not have this definition, you will have to use reflection to
access the method and call it. Note - you may need to change the flags
passed to GetMethod:

MethodInfo popupMethod = ty.GetMethod("p opupmsg", BindingFlags.In stance |
BindingFlags.Pu blic);
if (popupMethod != null)
{
popupMethod.Inv oke(obj, null);
}

In reading your post again - since you have to use Activator.Creat eInstance
(rather than just normally constructing the object), you will almost
certainly need to use the second option (Reflection).
--
Adam Clauss