复制代码 代码如下:
[DllImport("User32.dll", EntryPoint = "FindWindow")]
private static extern IntPtr FindWindow(string lpClassName, string lpWindowName);
[DllImport("user32.dll")]
static extern IntPtr FindWindowEx(IntPtr hwndParent, IntPtr hwndChildAfter, string lpszClass, string lpszWindow);
[DllImport("user32.dll")]
static extern bool SetForegroundWindow(IntPtr hWnd);
///<summary>
/// 定位到txt文件指定行
///</summary>
///<param name="strFullName">文件路径</param>
///<param name="strRow">指定行</param>
///<returns>定位是否成功</returns>
private bool LocateNotePad(string strFullName, string strRow)
{
int iRow;
int.TryParse(strRow, out iRow);
if (iRow <= 0)
{
return false;
}
IntPtr hwnd = FindWindow("Notepad", string.Format("{0} - 记事本", Path.GetFileName(strFullName)));//查看当前文件是否已打开
if (hwnd.ToInt32() == 0)
{
Process p = Process.Start(@"notepad.exe",strFullName);
p.WaitForInputIdle(1000); //等一秒，等文本打开，焦点去到notepad
System.Windows.Forms.SendKeys.SendWait("{DOWN " + (iRow - 1) + "}");
System.Windows.Forms.SendKeys.SendWait("{HOME}"); //行首
System.Windows.Forms.SendKeys.SendWait("+{END}"); //选中当前行
return true;
}
else
{
hwnd = FindWindowEx(hwnd, IntPtr.Zero, "Edit", string.Empty);
if (hwnd.ToInt32() == 0) return false;
else
{
SetForegroundWindow(hwnd);
System.Windows.Forms.SendKeys.SendWait("^{HOME}");//将光标定位到首行
System.Windows.Forms.SendKeys.SendWait("{DOWN " + (iRow - 1) + "}"); //
System.Windows.Forms.SendKeys.SendWait("{HOME}"); //行首
System.Windows.Forms.SendKeys.SendWait("+{END}"); //选中当前行
}
}
return true;
}

调用代码 LocateNotePad("D:\\test.txt","3");

代码很简单,通过FindWindow,FindWindowEx,SetForegroundWindow三个API进行获取句柄并设置进程当前以及发送系统命令操作,利用winform中的SendKeys发送键盘命令达到定位的目的.

PS:此命令需要增加 System.Windows.Forms,在引用处添加..希望对各位有帮助,也希望能得到各位朋友的指点改进,谢谢