Marshal::WriteInt64 Method (IntPtr, Int64)
Writes a 64-bit signed integer value to unmanaged memory.
Assembly: mscorlib (in mscorlib.dll)
Parameters
- ptr
-
Type:
System::IntPtr
The address in unmanaged memory to write to.
- val
-
Type:
System::Int64
The value to write.
| Exception | Condition |
|---|---|
| AccessViolationException | ptr is not a recognized format. -or- ptr is null. -or- ptr is invalid. |
WriteInt64 enables direct interaction with an unmanaged 64-bit signed array, eliminating the expense of copying an entire unmanaged array (using Marshal::Copy) to a separate managed array before setting its element values.
Writing to unaligned memory locations is supported.
The following example demonstrates how to read and write to an unmanaged array using the ReadInt64 and WriteInt64 methods.
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
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1