C#中调用WebBrowser查看源文件的功能

using System.Runtime.InteropServices;

[DllImport("User32.DLL")]
public static extern int SendMessage(IntPtr hWnd, uint Msg, int wParam, int lParam);

[DllImport("User32.DLL")]

public static extern IntPtr FindWindowEx(IntPtr hwndParent,

IntPtr hwndChildAfter, string lpszClass, string lpszWindow);

public int IDM_VIEWSOURCE= 2139;

public uint WM_COMMAND= 0x0111;

private void Form1_Load(object sender, EventArgs e)

{

webBrowser1.Navigate("http://blog.sina.com.cn/zswang");

}

private void button1_Click(object sender, EventArgs e)

{

IntPtr vHandle = webBrowser1.Handle;

vHandle = FindWindowEx(vHandle, IntPtr.Zero, "Shell Embedding", null);

vHandle = FindWindowEx(vHandle, IntPtr.Zero, "Shell DocObject View", null);

vHandle = FindWindowEx(vHandle, IntPtr.Zero, "Internet Explorer_Server", null);

SendMessage(vHandle, WM_COMMAND, IDM_VIEWSOURCE, (int)Handle);

}