Connection to EXcel in C SHARP

Question

how to connect c sharp with excel...by using some Interop services

Answer 1

using Microsoft.Office.Interop.Excel;

// Connect to Excel
Microsoft.Office.Interop.Excel.ApplicationClass excelApp = new Microsoft.Office.Interop.Excel.ApplicationClass();
// Do this if you want to see Excel 
excelApp.Visible = true;
// Open the spreadsheet
Microsoft.Office.Interop.Excel.Workbook workbook = excelApp.Workbooks.Open("MyFile.xls"
    Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing,
    Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing);
// Get the collection of worksheets
Microsoft.Office.Interop.Excel.Sheets sheets = workbook.Worksheets;
for (sheet = 1; sheet <= sheets.Count; sheet++)
{
    Microsoft.Office.Interop.Excel.Worksheet worksheet = (Microsoft.Office.Interop.Excel.Worksheet)sheets.get_Item(sheet);
    // Do something with the worksheet
    worksheet.Activate(); // do this if you have Excel visible so you can see what you're doing
}
// Close the workbook
excelApp.Workbooks.Close();
// Close Excel
excelApp.Application.Quit();