Marshal.ReadByte Method (IntPtr)

This type can be used only by trusted applications. If you try to use its members in a partial-trust application, your code will throw a MethodAccessException exception. This type is security-critical, which restricts its use.


Reads a single byte from an unmanaged pointer.

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


<SecurityCriticalAttribute> _
Public Shared Function ReadByte ( _
    ptr As IntPtr _
) As Byte
public static byte ReadByte(
    IntPtr ptr


  • ptr
    Type: System.IntPtr
    The address in unmanaged memory from which to read.

Return Value

Type: System.Byte
The byte read from the ptr parameter.

Version Information


Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0


For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.