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Old May 23rd, 2008, 01:37 PM
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Default Type.GetType does not work in VB.NET. Please help


   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

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Old May 24th, 2008, 04:03 AM
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Hi there,

You probably want to use VB's GetType directly like this:

Dim type_ClassName As Type = GetType(ClassName)

Alternatively, if you need to check whether an instance is of a certain type you can also use TypeOf:

If TypeOf (instance) Is ClassName Then
End If

Hope this helps,


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Old June 3rd, 2008, 06:07 AM
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I had a similar problem and Type.GetType( [string] ) was not working.

Check if you have already declared a class with the name Type. You can inevertently do this by creating LINQ classes. If this is the case then you will need to type.

System.Type, as the following example shows:

Dim typeModificator As System.Type = System.Type.GetType(("TemplateParser.Modificators. " + strExtra))

Hope this helps anyone stumbling across it.

There's plenty of different ways to skin a cat.

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