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InvalidCastException Constructor

.NET Framework 4

Initializes a new instance of the InvalidCastException class.

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)
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public InvalidCastException()

This constructor initializes the Message property of the new instance to a system-supplied message that describes the error, such as "Cannot cast from source type to destination type." This message takes into account the current system culture.

The following table shows the initial property values for an instance of InvalidCastException.

Property

Value

InnerException

A null reference (Nothing in Visual Basic).

Message

The localized error message string.

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
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Examination Marks

Dim mark As Single

mark = TextBox1 . Text

Select Case mark

Case 0 To 49

Label1 . Text = "E"

Case 50 To 59

Label1 . Text = "D"

Case 60 To 69

Label1 . Text = "C"

Case 70 To 79

Label1 . Text = "B"

Case 80 To 100

Label1 . Text = "A"

Case Else

Label1 . Text = "Error, please reenter the mark"

End Select

End Sub

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