C#

//using System.Management;
        void Shutdown()
        {
            ManagementClass W32_OS = new ManagementClass("Win32_OperatingSystem");
            ManagementBaseObject inParams, outParams;
            int result;
            W32_OS.Scope.Options.EnablePrivileges = true;
            foreach (ManagementObject obj in W32_OS.GetInstances())
            {
                inParams = obj.GetMethodParameters("Win32Shutdown");
                inParams["Flags"] = ShutDown.ForcedShutdown;
                inParams["Reserved"] = 0;
                outParams = obj.InvokeMethod("Win32Shutdown", inParams, null);
                result = Convert.ToInt32(outParams["returnValue"]);
                if (result != 0) throw new Win32Exception(result);
            }
        }
        public enum ShutDown
        {
            LogOff = 0,
            Shutdown = 1,
            Reboot = 2,
            ForcedLogOff = 4,
            ForcedShutdown = 5,
            ForcedReboot = 6,
            PowerOff = 8,
            ForcedPowerOff = 12
        }

using(DataModel.DatabaseDataContext context = GetDatabaseContext()) {
   var result = from b in context.Branches
                where b.Id == id
                select b;
   foreach(Branch branch in result) {
      ...
   }
}

string getCellValue(int row, int cell)
{
   string rtn = "";

   if (dataGridView1.Rows[row].Cells[0].Value != null) {
      rtn = dataGridView1.Rows[i].Cells[0].Value.ToString();
   }

   return rtn;
}

string getCellValue(DataGridViewCell cell)
{
   return (cell.Value != null ? cell.Value.ToString() : "");
}

System.Drawing.Bitmap bitmap = new System.Drawing.Bitmap
(
    this.pPanel.Width
,
    this.pPanel.Height
) ;

using ( System.Drawing.Graphics gr = System.Drawing.Graphics.FromImage ( bitmap ) )
{
    gr.CopyFromScreen
    (
        this.pPanel.PointToScreen ( new System.Drawing.Point ( 0 , 0 ) )
    ,
        new System.Drawing.Point ( 0 , 0 )
    ,
        this.pPanel.Size
    ) ;

    try
    {
        System.IO.StreamWriter sw = new System.IO.StreamWriter
        (
            new System.IO.FileStream
            (
                this.dlgFileSave.FileName
            ,
                System.IO.FileMode.Create
            ,
                System.IO.FileAccess.Write
            ,
                System.IO.FileShare.None
            )
        ) ;

        bitmap.Save ( sw.BaseStream , System.Drawing.Imaging.ImageFormat.Png ) ;

        sw.Close() ;
    }
    catch ( System.Exception err )
    {
        System.Windows.Forms.MessageBox.Show
        (
            "Could not open file\n" +
            err.Message
        ,
            "File open error"
        ,
            System.Windows.Forms.MessageBoxButtons.OK
        ,
            System.Windows.Forms.MessageBoxIcon.Exclamation
        ) ;
    }
}