using System;

using System.Drawing;

using System.Windows.Forms;

using Excel = Microsoft.Office.Interop.Excel; 



namespace WindowsApplication1

{

    public partial class Form1 : Form

    {

        public Form1()

        {

            InitializeComponent();

        }



        private void button1_Click(object sender, EventArgs e)

        {

            Excel.Application xlApp ;

            Excel.Workbook xlWorkBook ;

            Excel.Worksheet xlWorkSheet ;

            Excel.Range chartRange ;

            object misValue = System.Reflection.Missing.Value;



            xlApp = new Excel.ApplicationClass();

            xlWorkBook = xlApp.Workbooks.Add(misValue);

            xlWorkSheet = (Excel.Worksheet)xlWorkBook.Worksheets.get_Item(1);



            chartRange = xlWorkSheet.get_Range ("b2", "e9");

            xlWorkSheet.get_Range("B5", "D5").Validation.Add(Excel.XlDVType.xlValidateInputOnly, Excel.XlDVAlertStyle.xlValidAlertStop, Excel.XlFormatConditionOperator.xlBetween, misValue, misValue);

            xlWorkSheet.get_Range("B5", "D5").Validation.IgnoreBlank = true;

            xlWorkSheet.get_Range("B5", "B5").FormulaR1C1 = "Click Here to see Notes";

            xlWorkSheet.get_Range("B5", "D5").Validation.InputTitle = "csharp.net-informations.com";

            xlWorkSheet.get_Range("B5", "D5").Validation.ErrorTitle = "Error in Title";

            xlWorkSheet.get_Range("B5", "D5").Validation.InputMessage = "Here is the notes embeded - you can enter 255 characters maximum in notes ";

            xlWorkSheet.get_Range("B5", "D5").Validation.ErrorMessage = "Error in Notes";

            xlWorkSheet.get_Range("B5", "D5").Validation.ShowInput = true;

            xlWorkSheet.get_Range("B5", "D5").Validation.ShowError = true; 



            xlWorkBook.SaveAs("csharp.net-informations.xls", Excel.XlFileFormat.xlWorkbookNormal, misValue, misValue, misValue, misValue, Excel.XlSaveAsAccessMode.xlExclusive, misValue, misValue, misValue, misValue, misValue);

            xlWorkBook.Close(true, misValue, misValue);

            xlApp.Quit();



            releaseObject(xlWorkSheet);

            releaseObject(xlWorkBook);

            releaseObject(xlApp);



            MessageBox.Show("Excel file created , you can find the file c:\\csharp-Excel.xls");

        }



        private void releaseObject(object obj)

        {

            try

            {

                System.Runtime.InteropServices.Marshal.ReleaseComObject(obj);

                obj = null;

            }

            catch (Exception ex)

            {

                obj = null;

                MessageBox.Show("Exception Occured while releasing object " + ex.ToString());

            }

            finally

            {

                GC.Collect();

            }

        }



    }

}