API -> GetUserName [ Library : advapi32.dll, Category : Security ] [C#, VB, VB.net]

GetUserName

Library : advapi32.dll Category : Security

Api Example(s)
UserName - The name of the interactive user
This is a link to different site Calling Win32 DLLs in C# with P/Invoke

API Description :

The GetUserName function retrieves the user name of the current thread. This is the name of the user currently logged onto the system.

VB Declaration :

Show Multiline Public Private

Declare Function GetUserName Lib "advapi32" Alias "GetUserNameA" (ByVaL lpBuffer As String, nSize As Long) As Long

Parameters :

· lpBuffer
Points to the buffer to receive the null-terminated string containing the user’s logon name. If this buffer is not large enough to contain the entire user name, the function fails.

· nSize
Pointer to a DWORD that, on input, specifies the m

Return :

If the function succeeds, the return value is nonzero, and the variable pointed to by nSize contains the number of characters copied to the buffer specified by lpBuffer, including the terminating null character. 

If the function fails, the return value

OS Requirement :

Requires Windows NT 3.1 or later
Requires Windows 95 or later

Dotnet Replacement :

System.Environment.UserName