using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices; //使用DllImport所需引用的命名空間
namespace WinAPI_GetUserName
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
[DllImport("Advapi32.dll", EntryPoint = "GetUserName", ExactSpelling = false,
SetLastError = true)]
static extern bool GetUserName(
[MarshalAs(UnmanagedType.LPArray)] byte[] lpBuffer,
[MarshalAs(UnmanagedType.LPArray)] int[] nSize);
private void btn_GetUserName_Click(object sender, EventArgs e)
{
byte[] str = new byte[20];
int[] len = new int[1];
len[0] = str.Length;
GetUserName(str, len);
string Msg = System.Text.Encoding.ASCII.GetString(str);
Msg = Msg.Substring(0, Msg.IndexOf('/0'));
MessageBox.Show(this,Msg,"獲取使用者名稱");
}
}
}
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