如果文件存在覆盖(c#,winform,批处理文件)

我是c#的新手,我对使用WinForm完成一个包含表单接收的参数的批处理文件,执行批处理并创建特定文件表示怀疑.

是)我有的：

WinForm – > 2个字符串变量(ip和user)

批处理文件 – >使用个性化图标在桌面上创建.rdp文件及其快捷方式(手动启动时批处理工作)

我的问题是代码第一次工作,但如果我尝试更改变量,进程不会运行,文件不会被新信息覆盖,我有一个错误说我没有访问权限.

WinForm代码：

private void ok_Click(object sender,EventArgs e)
    {
        string ipText,userText,defaultFile,rdpFile;
        ipText = this.ipOutput.Text;
        userText = this.userOutput.Text;
        defaultFile = "C:\\TerminalServer\\RDbatch.cmd";
        rdpFile = "C:\\TerminalServer\\RD Arbeitsplatz.rdp";

        Console.WriteLine("IP : " + ipText + "; USER : " + userText);

        Process p = null;        

        try
        {
            p = new Process();
            p.StartInfo.CreateNowindow = true;
            p.StartInfo.WindowStyle = ProcessWindowStyle.Hidden;
            p.StartInfo.FileName = defaultFile;
            p.StartInfo.Arguments = String.Format("{0} {1}",ipText,userText);
            p.StartInfo.UseShellExecute = false;
            p.StartInfo.RedirectStandardOutput = true;
            p.Start();
            p.WaitForExit();
        }
        catch(Exception ex)
        {
            Console.WriteLine("Exception Occurred :{0},{1}",ex.Message,ex.StackTrace.ToString());
        }         

    }

批处理文件代码

@echo off

REM Change this by remming out desktop or all users desktop as you wish
REM Make sure that all entries below have " " around them as present

rem set Location="AllUsersDesktop"
set Location="C:\Users\Default\Desktop"

set displayName=""
set filename="C:\TerminalServer\RD Arbeitsplatz.rdp"

REM point to an ICO file or an icon within an existing EXE
rem set icon="C:\TerminalServer\rohwerderlogo.ico"
set icon="C:\TerminalServer\rohwerderlogo.ico,0"

set WorkingDir="C:\TerminalServer"

del %filename% 2>NUL

(echo screen mode id:i:2
echo use multimon:i:0
echo desktopwidth:i:1920
echo desktopheight:i:1080
echo session bpp:i:32
echo winposstr:s:0,3,800,600
echo compression:i:1
echo keyboardhook:i:2
echo audiocapturemode:i:0
echo videoplaybackmode:i:1
echo connection type:i:7
echo networkautodetect:i:1
echo bandwidthautodetect:i:1
echo displayconnectionbar:i:1
echo disable wallpaper:i:0
echo allow font smoothing:i:0
echo allow desktop composition:i:0
echo disable full window drag:i:1
echo disable menu anims:i:1
echo disable themes:i:0
echo disable cursor setting:i:0
echo bitmapcachepersistenable:i:1
echo full address:s:%1
echo audiomode:i:0
echo redirectprinters:i:1
echo redirectcomports:i:0
echo redirectsmartcards:i:1
echo redirectclipboard:i:1
echo redirectposdevices:i:0
echo drivestoredirect:s:
echo username:s:%2
echo autoreconnection enabled:i:1
echo authentication level:i:2
echo prompt for credentials:i:0
echo negotiate security layer:i:1
echo remoteapplicationmode:i:0
echo alternate shell:s:
echo shell working directory:s:
echo gatewayhostname:s:
echo gatewayusagemethod:i:4
echo gatewaycredentialssource:i:4
echo gatewayprofileusagemethod:i:0
echo promptcredentialonce:i:0
echo gatewaybrokeringtype:i:0
echo use redirection server name:i:0
echo rdgiskdcproxy:i:0
echo kdcproxyname:s:
) > %filename%
attrib %filename% +r
echo Y|cacls %filename% /E /P %username%:r

REM Make temporary VBS file to create shortcut
REM Then execute and delete it

set SCRIPT="%TEMP%\%rANDOM%-%rANDOM%-%rANDOM%-%rANDOM%.vbs"

echo Set oWS = WScript.CreateObject("WScript.Shell") >> %sCRIPT%
echo sLinkFile = "%USERPROFILE%\Desktop\RD Arbeitsplatz.lnk" >> %sCRIPT%
echo Set oLink = oWS.CreateShortcut(sLinkFile) >> %sCRIPT%
echo oLink.TargetPath = "C:\TerminalServer\RD Arbeitsplatz.rdp" >> %sCRIPT%
echo oLink.IconLocation = "C:\TerminalServer\rohwerderlogo.ico" >> %sCRIPT%
echo oLink.Save >> %sCRIPT%

cscript /nologo %sCRIPT%
rem del %sCRIPT% 2>NUL

如果文件不存在,如果存在覆盖它,我正在考虑启动进程代码,但我不知道如何从这里开始.

解决方法

我建议尝试仅在C#中完成您的任务,这里有一些代码和我的评论,以便让您前进.通过在方法调用周围添加try / catch块,让我们知道它导致的异常.

** required usings **
 using System.IO;
 using System.Runtime.InteropServices;
 using System.Runtime.InteropServices.ComTypes;
 using System.Security.AccessControl;

        // Usage of the method
        // (CommonDesktopDirectory = All Users Desktop or DesktopDirectory = Current user desktop)
        CreateRdpFile(Environment.SpecialFolder.CommonDesktopDirectory,@"C:\TerminalServer\rohwerderlogo.ico","127.0.0.1",Environment.UserName
        );


    public void CreateRdpFile(Environment.SpecialFolder locationOfShortcut,string iconPath,string ip,string userName)
    {
        // The fileName of the rdp file to create
        var rdpFileName = @"C:\TerminalServer\RD Arbeitsplatz.rdp";

        // Your filecontents,note that we're concatenation the ip and userName from the methods arguments
        var rdpFileContent =
@"screen mode id:i:2
use multimon:i:0
desktopwidth:i:1920
desktopheight:i:1080
session bpp:i:32
winposstr:s:0,600
compression:i:1
keyboardhook:i:2
audiocapturemode:i:0
videoplaybackmode:i:1
connection type:i:7
networkautodetect:i:1
bandwidthautodetect:i:1
displayconnectionbar:i:1
disable wallpaper:i:0
allow font smoothing:i:0
allow desktop composition:i:0
disable full window drag:i:1
disable menu anims:i:1
disable themes:i:0
disable cursor setting:i:0
bitmapcachepersistenable:i:1
full address:s:" + ip + @"
audiomode:i:0
redirectprinters:i:1
redirectcomports:i:0
redirectsmartcards:i:1
redirectclipboard:i:1
redirectposdevices:i:0
drivestoredirect:s:
username:s:"+ userName +@"
autoreconnection enabled:i:1
authentication level:i:2
prompt for credentials:i:0
negotiate security layer:i:1
remoteapplicationmode:i:0
alternate shell:s:
shell working directory:s:
gatewayhostname:s:
gatewayusagemethod:i:4
gatewaycredentialssource:i:4
gatewayprofileusagemethod:i:0
promptcredentialonce:i:0
gatewaybrokeringtype:i:0
use redirection server name:i:0
rdgiskdcproxy:i:0
kdcproxyname:s:";

        // Open a filestream,load that into a streamWriter
        using (var fileStream = File.Open(rdpFileName,FileMode.Create))
        using(var streamWriter = new StreamWriter(fileStream))
        {
            // Write the contents of the string created above
            streamWriter.Write(rdpFileContent); 
        }
        // fileStream and streamWriter automatically closed because of using block


        // Get a FileSecurity object that represents the
        // current security settings.
        FileSecurity fSecurity = File.GetAccessControl(rdpFileName);

        // Add the FileSystemAccessRule to the security settings. (Allow read for user from argument)
        fSecurity.AddAccessRule(new FileSystemAccessRule(userName,FileSystemRights.Read,AccessControlType.Allow));

        // Build the shortcut path
        var shortcutPath = Path.Combine(Environment.GetFolderPath(locationOfShortcut),"RD Arbeitsplatz.lnk");

        IShellLink link = (IShellLink)new ShellLink();
        // Setup shortcut @R_292_4045@ion
        link.SetDescription("My Description");
        link.SetPath(rdpFileName);
        link.SetIconLocation(iconPath);

        // Save it
        var file = (IPersistFile)link;
        file.Save(shortcutPath,false);
    }

    #region Imported code to prevent additional assembly references
    [ComImport]
    [Guid("00021401-0000-0000-C000-000000000046")]
    internal class ShellLink
    {
    }

    [ComImport]
    [InterfaceType(ComInterfaceType.InterfaceIsIUnkNown)]
    [Guid("000214F9-0000-0000-C000-000000000046")]
    internal interface IShellLink
    {
        void GetPath([Out,MarshalAs(UnmanagedType.LPWStr)] StringBuilder pszFile,int cchMaxPath,out IntPtr pfd,int fFlags);
        void GetIDList(out IntPtr ppidl);
        void SetIDList(IntPtr pidl);
        void GetDescription([Out,MarshalAs(UnmanagedType.LPWStr)] StringBuilder pszName,int cchMaxName);
        void SetDescription([MarshalAs(UnmanagedType.LPWStr)] string pszName);
        void GetWorkingDirectory([Out,MarshalAs(UnmanagedType.LPWStr)] StringBuilder pszDir,int cchMaxPath);
        void SetWorkingDirectory([MarshalAs(UnmanagedType.LPWStr)] string pszDir);
        void GetArguments([Out,MarshalAs(UnmanagedType.LPWStr)] StringBuilder pszArgs,int cchMaxPath);
        void SetArguments([MarshalAs(UnmanagedType.LPWStr)] string pszArgs);
        void GetHotkey(out short pwHotkey);
        void SetHotkey(short wHotkey);
        void GetShowCmd(out int piShowCmd);
        void SetShowCmd(int iShowCmd);
        void GetIconLocation([Out,MarshalAs(UnmanagedType.LPWStr)] StringBuilder pszIconPath,int cchIconPath,out int piIcon);
        void SetIconLocation([MarshalAs(UnmanagedType.LPWStr)] string pszIconPath,int iIcon);
        void SetRelativePath([MarshalAs(UnmanagedType.LPWStr)] string pszPathRel,int dwReserved);
        void Resolve(IntPtr hwnd,int fFlags);
        void SetPath([MarshalAs(UnmanagedType.LPWStr)] string pszFile);
    }
    #endregion