C# 創建Excel並寫入內容

1.         1 增加應用      Microsoft.Office.Interop.Excel
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           2 引用命名空間  using Excel = Microsoft.Office.Interop.Excel;
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           /// <summary>
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   /// If the supplied excel File does not exist then Create it
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   /// </summary>
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   /// <param name="FileName"></param>
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   private void CreateExcelFile(string FileName)
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   {
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   //create
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    object Nothing = System.Reflection.Missing.Value;
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    var app = new Excel.Application();
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    app.Visible = false;
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    Excel.Workbook workBook = app.Workbooks.Add(Nothing);
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    Excel.Worksheet worksheet = (Excel.Worksheet)workBook.Sheets[ 1];
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    worksheet.Name = "Work";
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    //headline
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    worksheet.Cells[ 1, 1] = "FileName";
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    worksheet.Cells[ 1, 2] = "FindString";
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    worksheet.Cells[ 1, 3] = "ReplaceString";
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    worksheet.SaveAs(FileName, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Excel.XlSaveAsAccessMode.xlNoChange, Type.Missing, Type.Missing, Type.Missing);
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    workBook.Close( false, Type.Missing, Type.Missing);
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    app.Quit();
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    }
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    /// <summary>
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    /// open an excel file,then write the content to file
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    /// </summary>
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    /// <param name="FileName">file name</param>
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    /// <param name="findString">first cloumn</param>
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    /// <param name="replaceString">second cloumn</param>
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    private void WriteToExcel(string excelName,string filename,string findString,string replaceString)
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    {
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    //open
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    object Nothing = System.Reflection.Missing.Value;
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    var app = new Excel.Application();
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    app.Visible = false;
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    Excel.Workbook mybook = app.Workbooks.Open(excelName, Nothing, Nothing, Nothing, Nothing, Nothing, Nothing, Nothing, Nothing, Nothing, Nothing, Nothing, Nothing, Nothing, Nothing);
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    Excel.Worksheet mysheet = (Excel.Worksheet)mybook.Worksheets[ 1];
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    mysheet.Activate();
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    //get activate sheet max row count
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    int maxrow = mysheet.UsedRange.Rows.Count + 1;
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    mysheet.Cells[maxrow, 1] = filename;
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    mysheet.Cells[maxrow, 2] = findString;
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    mysheet.Cells[maxrow, 3] = replaceString;
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    mybook.Save();
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    mybook.Close( false, Type.Missing, Type.Missing);
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    mybook = null;
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    //quit excel app
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    app.Quit();
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    }