C#定位txt指定行的方法小例子
2023-06-13 09:14:51 时间
[DllImport("User32.dll",EntryPoint="FindWindow")]
privatestaticexternIntPtrFindWindow(stringlpClassName,stringlpWindowName);
[DllImport("user32.dll")]
staticexternIntPtrFindWindowEx(IntPtrhwndParent,IntPtrhwndChildAfter,stringlpszClass,stringlpszWindow);
[DllImport("user32.dll")]
staticexternboolSetForegroundWindow(IntPtrhWnd);
///<summary>
///定位到txt文件指定行
///</summary>
///<paramname="strFullName">文件路径</param>
///<paramname="strRow">指定行</param>
///<returns>定位是否成功</returns>
privateboolLocateNotePad(stringstrFullName,stringstrRow)
{
intiRow;
int.TryParse(strRow,outiRow);
if(iRow<=0)
{
returnfalse;
}
IntPtrhwnd=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)
{
Processp=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
returntrue;
}
else
{
hwnd=FindWindowEx(hwnd,IntPtr.Zero,"Edit",string.Empty);
if(hwnd.ToInt32()==0)returnfalse;
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
}
}
returntrue;
}
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