C#

private void SetControlsEnabledProperty(bool isEnabled, bool isRecursive, string typeToCheck, Control.ControlCollection theControls)
    {
        foreach (Control theControl in theControls)
        {
            // edited here: removed duplicate line inserted by mistake

            // is there a better way to handle the
            // the type checking required here ?
            if (theControl.GetType().Name == typeToCheck)
            {
                theControl.Enabled = isEnabled;
            }
            else
            {
                if (isRecursive && theControl.HasChildren)
                {
                    SetControlsEnabledProperty(isEnabled, isRecursive, typeToCheck, theControl.Controls);
                }
            }
        }
    }
}

private void EnableAllTextBoxes()
{
   bool isEnabled = true; // enable all the controls
   bool isRecursive = true; // handle nested controls
   string typeToCheck = "TextBox"

   SetControlsEnabledProperty(Control.ControlCollection theControls);
}

DataTable dtReturn = new DataTable();

         
            dtTarget.Merge(dtSource);
            BindingContext[dtTarget].EndCurrentEdit();
            dtReturn = new DataTable(); 
            dtReturn = dtTarget.GetChanges(DataRowState.Added);

//C# events
eventDo += TestFkt; //registering
eventDo();          //testcall

//C++ event-call
SetEvent(HANDLE hEvent) 

//C# DLL-call
[DllImport("canapi2.dll", EntryPoint="CAN_SetClientParam")]
public static extern uint SetClientParam(
            ushort wParam,
            int   dwValue);

CAN_SetClientParam(
        WORD        wParam,   //specifies kind of parameter
        DWORD       dwValue); //Event handle

SetEvent((HANDLE) dwValue) 

IntPtr iptr = Marshal.GetFunctionPointerForDelegate(eventDo);
SetClientParam(PARAM_ONRCV_EVENT_HANDLE, (int)(iptr));