C#执行cmd命令

private async void btnInstallPackage_Click(object sender, EventArgs e)
{
   string msg = await Task.Run(() => { return executeCmd(); });
    UpdateMsg(msg);
}
public string executeCmd()
{
    // 要执行的CMD命令 显示ip信息
    string commandText = "ipconfig";
    //KB5044619 安装windows补丁
    //commandText = "dism /online /add-package /packagepath:E:\\Download\\windows10.0-kb5044619-x64_3ef2399e39c2d708f26d02aeb985c2c7f53f9a2c.cab";
    // 启动进程
    using (Process process = new Process())
    {
        process.StartInfo.FileName = "cmd.exe"; // 设置CMD为可执行文件
        //process.StartInfo.Arguments = $"/c {commandText}";
        process.StartInfo.RedirectStandardInput = true; // 允许写入输入流
        process.StartInfo.RedirectStandardOutput = true; // 允许读取输出流
        process.StartInfo.UseShellExecute = false; // 不使用系统外壳程序启动
        process.StartInfo.CreateNoWindow = true; // 不创建新窗口
        process.StartInfo.RedirectStandardError = true;
        process.StartInfo.Verb = "runas"; // 设置以管理员身份运行

        string strOutput = "start \r\n";
        try
        {
            process.Start();
            process.StandardInput.WriteLine(commandText);
            process.StandardInput.WriteLine("exit");
            strOutput += process.StandardOutput.ReadToEnd();
            process.WaitForExit();
        }
        catch (Exception ex)
        {
            strOutput += ex.Message;
        }
        UpdateMsg(strOutput);
        return strOutput;
    }
}