Parameters

ptr

The address of the first character of the unmanaged string.

len

The number of Unicode characters to copy.

Returns

A managed string that holds a copy of the unmanaged string if the value of the ptr parameter is not null; otherwise, this method returns null.

Remarks

Marshal.PtrToStringUni(IntPtr, int) is useful for custom marshaling or when mixing managed and unmanaged code. Because this method creates a copy of the unmanaged string's contents, you must free the original string as appropriate. This method provides the opposite functionality of the Marshal.StringToCoTaskMemUni(string) and Marshal.StringToHGlobalUni(string) methods.

Requirements