Marshal::ReadByte Method (Object^, Int32)
Reads a single byte at a given offset (or index) from unmanaged memory.
Assembly: mscorlib (in mscorlib.dll)
Parameters
- ptr
-
Type:
System::Object^
The base address in unmanaged memory of the source object.
- ofs
-
Type:
System::Int32
An additional byte offset, which is added to the ptr parameter before reading.
| Exception | Condition |
|---|---|
| AccessViolationException | Base address (ptr) plus offset byte (ofs) produces a null or invalid address. |
| ArgumentException | ptr is an ArrayWithOffset object. This method does not accept ArrayWithOffset parameters. |
ReadByte enables direct interaction with an unmanaged C-style byte array, eliminating the expense of copying an entire unmanaged array (using Marshal::Copy) to a separate managed array before reading its element values.
Reading from unaligned memory locations is supported.
requires full trust for the immediate caller. This member cannot be used by partially trusted or transparent code.
Available since 8
.NET Framework
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Windows Phone
Available since 8.1