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DllImportAttribute::CharSet Field

Indicates how to marshal string parameters to the method and controls name mangling.

Namespace:  System.Runtime.InteropServices
Assemblies:   mscorlib (in mscorlib.dll)
  System.Runtime.InteropServices (in System.Runtime.InteropServices.dll)

public:
CharSet CharSet

Use this field with a member of the CharSet enumeration to specify the marshaling behavior of string parameters and to specify which entry-point name to invoke (the exact name given or a name ending with "A" or "W"). The default enumeration member for C# and Visual Basic is CharSet.Ansi and the default enumeration member for C++ is CharSet.None, which is equivalent to CharSet.Ansi. In Visual Basic, you use the Declare statement to specify the CharSet field.

The ExactSpelling field influences the behavior of the CharSet field in determining which entry-point name to invoke. For a detailed description and examples of the string marshaling and name matching behavior associated with the CharSet field, see Specifying a Character Set.

The following code example shows how to use the DllImportAttribute attribute to import the Win32 MessageBox function. The code example then calls the imported method.

No code example is currently available or this language may not be supported.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

XNA Framework

Supported in: 3.0, 2.0, 1.0

Portable Class Library

Supported in: Portable Class Library

Supported in: Windows Phone 8.1

Supported in: Windows Phone Silverlight 8.1

Supported in: Windows Phone Silverlight 8
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