Pfthb

I am reading a text file, translate the data where each line either goes in header object or items object. I am having an issue with nullables

'p' in below code is coming from

Dim properties As PropertyInfo() = GetType(UploadMain).GetProperties()

The code below throws the error:

Invalid cast from 'System.DateTime' to 'System.Nullable`1[[System.DateTime, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]]'

p.SetValue(header, Convert.ChangeType(dataObject, p.PropertyType))

the corresponding property in the class

private _orderDate As Date?
 Public Property OrderDate As Date?
 Get 
 Return _orderDate
 End Get
 Set(value As Date?)
 _orderDate = value
 End Set
 End Property

After looking around, found the following function, which i translated from C#

Public Class ChangeTypeUtlity

 Public Shared Function ChangeType(Of T)(ByVal value As Object) As T
 Dim conversionType As Type = GetType(T)

 If conversionType.IsGenericType AndAlso conversionType.GetGenericTypeDefinition().Equals(GetType(Nullable)) Then

 If value Is Nothing Then
 Return Nothing
 Else
 Dim nullableConverter As NullableConverter = New NullableConverter(conversionType)
 conversionType = nullableConverter.UnderlyingType
 End If
 End If

 Return CType(Convert.ChangeType(value, conversionType), T)
 End Function

 End Class

I have tried it with both type1 and type2 but getting error that it is not defined.

Dim type1 as Type = p.[GetType]()
Dim type2 As Type = p.PropertyType
p.SetValue(header, ChangeTypeUtlity.ChangeType(Of type2)(dataObject))

How can i pass my property type to the above function?

You can give the solution in C#. It doesn't need to be VB.Net

Your problem is with ChangeType, do you even need it? If you do, detect if the property is Nullable, if it is you can then use GetUnderlyingType

Convert.ChangeType(dataObject, Nullable.GetUnderlyingType(p.PropertyType))