Type.GetType does not work in VB.NET but works in C#. VB.NET gurus Please help

Question

User-716244244 posted

Friends,

   I am an experienced C# programmer who is working on a VB.NET project now. I am writing different methods covering the following functionalities

1) Take a datareader as input and return an arraylist of class object

2) Take an xmlnode (received from a webservice) as input and return an arraylist of class object.

 The methods are generic methods which take datareader/xmlnode as first parameter and classname (string) as the second parameter. This way it will work trivially.

 The schema of class object matches with the input (datareader or xmlnode)

In C# I used to do this by using reflection and Type.GetType(). But the Type.GetType() is not working in VB.NET. Its returning "Nothing". I made sure that the namespace/class names are spelled properly. I even tested the same code in C# and it works like a charm. Only in VB.net it does not work.

The .vb file is created inside the App_Code folder of the web application.

I read other posts and removed the temporary asp.net files and stuff but didn't help 

Any help will be greatly appreciated 

 C# code

 

Type type_ClassName = Type.GetType(className);   //Works like a charm

 

VB.NET code
 

Dim oType As Type = Type.GetType("JEB.DocumentIdsCaseNumbers")    // Does not work [:(] 

 I used Immediate window on debug mode for both vb.net and c# and confirmed that it does not work in vb.net

 Please help me to get the GetType() working in VB.NET
 

 

Answer 1

User-168033412 posted

 Hi,

have a look on this article http://ziqbalbh.wordpress.com/2008/05/27/typegettype/ 

Answer 2

User-1899898566 posted

Hi, 

Could you use the TypeOf Operator as all??

Dim ty As Boolean = TypeOf <object> Is JEB.DocumentIdsCaseNumbers

I know this example is not exact but it may help you??

Regards

Nick

Answer 3

User397347636 posted

Type.GetType is a framework call - it should work identically in C# and VB.

The global VB GetType macro is another story (and is equivalent to the C# 'typeof' operator), but this isn't a factor here.

 

Answer 4

User1837512635 posted

'Method 1

Dim Form1 As Form = Activator.CreateInstance(Of frmContractEdit)()

Form1.Show()

'Method 2

Dim Form2Type As Type = GetType(frmContractEdit)

MsgBox(Form2Type.AssemblyQualifiedName)

Dim Form2 As Form = CType(Activator.CreateInstance(Form2Type), Form)

Form2.Show()

'Method 3

'Fusion. needs to be in front and was found using MsgBox above

'frmContractEdit needs to have Inherits System.Windows.Forms.Form in its Class definition (designer)

Dim Form3Type As Type = Type.GetType("Fusion.frmContractEdit", True, True)

MsgBox(Form3Type.AssemblyQualifiedName)

Dim Form3 As Form = CType(Activator.CreateInstance(Form3Type), Form)

Form3.Show()

'Method 4

Dim Form4 As Form = CType(Activator.CreateInstance(Type.GetType("Fusion.frmContractEdit", True, True)), Form)

Form4.Show()