Экспорт SQL в Excel

Question

Как я могу экспортировать свои данные из SQL Server 2008 в Excel 2010 или более позднюю версию?

Я пытался использовать SQL:

sp_configure 'show advanced options', 0;
GO
RECONFIGURE;
GO
sp_configure 'Ad Hoc Distributed Queries', 0;
GO
RECONFIGURE;
GO
INSERT INTO OPENROWSET('Microsoft.Jet.OLEDB.4.0', 
'Excel 8.0;Database=C:\testing.xls;Extended Properties=EXCEL 12.0;HDR=YES', 
'SELECT NO_ORDRE, Date FROM [Sheet1$]') 
SELECT [NO_ORDRE], GETDATE() FROM ORDRE
GO

К сожалению, я получаю сообщение об ошибке: поставщик OLE DB«Microsoft.Jet.OLEDB.4.0» нельзя использовать для распределенных запросов, поскольку поставщик настроен для работы в режиме STA.

, а затем я попытался на C #:

 public class ExportToExcel
    {
        private Excel.Application app;

        private Excel.Workbook workbook;
        private Excel.Worksheet previousWorksheet;
       // private Excel.Range workSheet_range;
        private string folder;

        public ExportToExcel(string folder)
        {

            this.folder = folder;
            this.app = null;
            this.workbook = null;
            this.previousWorksheet = null;
           // this.workSheet_range = null;

            createDoc();
        }

        private void createDoc()
        {
            try
            {
                app = new Excel.Application();
                app.Visible = false;
                workbook = app.Workbooks.Add(1);
            }
            catch (Exception excThrown)
            {
                throw new Exception(excThrown.Message);
            }
            finally
            {
            }
        }

        public void shutDown()
        {
            try
            {
                workbook = null;
                app.Quit();
            }
            catch (Exception excThrown)
            {
                throw new Exception(excThrown.Message);
            }
            finally
            {
            }
        }

        public void ExportTable(string query, string sheetName)
        {
            SqlDataReader myReader = null;
            try
            {
                using (var connectionWrapper = new Connexion())
                {
                    var connectedConnection = connectionWrapper.GetConnected();
                    Excel.Worksheet worksheet = (Excel.Worksheet)workbook.Sheets.Add(Missing.Value, Missing.Value, 1, Excel.XlSheetType.xlWorksheet);

                    worksheet.Name = sheetName;
                    previousWorksheet = worksheet;

                    SqlCommand myCommand = new SqlCommand(query, connectionWrapper.conn);

                    myReader = myCommand.ExecuteReader();

                    int columnCount = myReader.FieldCount;

                    for (int n = 0; n < columnCount; n++)
                    {
                        //Console.Write(myReader.GetName(n) + "\t");
                        createHeaders(worksheet, 1, n + 1, myReader.GetName(n));
                    }

                    int rowCounter = 2;
                    while (myReader.Read())
                    {
                        for (int n = 0; n < columnCount; n++)
                        {
                            //Console.WriteLine();
                            //Console.Write(myReader[myReader.GetName(n)].ToString() + "\t");
                            addData(worksheet, rowCounter, n + 1, myReader[myReader.GetName(n)].ToString());
                        }
                        rowCounter++;
                    }

                }
            }

            catch (Exception e)
            {
                Console.WriteLine(e.ToString());

            }
            finally
            {
                if (myReader != null && !myReader.IsClosed)
                {
                    myReader.Close();
                }   
                myReader = null;
            }

        }

        public void createHeaders(Excel.Worksheet worksheet, int row, int col, string htext)
        {
            worksheet.Cells[row, col] = htext;
        }

        public void addData(Excel.Worksheet worksheet, int row, int col, string data)
        {
            worksheet.Cells[row, col] = data;
        }

        public void SaveWorkbook()
        {

            String folderPath = "C:\\My Files\\" + this.folder;

            if (!System.IO.Directory.Exists(folderPath))
            {
                System.IO.Directory.CreateDirectory(folderPath);
            }

            string fileNameBase = "db";
            String fileName = fileNameBase;
            string ext = ".xlsx";
            int counter = 1;

            while (System.IO.File.Exists(folderPath + fileName + ext))
            {
                fileName = fileNameBase + counter;
                counter++;
            }

            fileName = fileName + ext;

            string filePath = folderPath + fileName;

            try
            {
                workbook.SaveAs(filePath, Excel.XlFileFormat.xlWorkbookDefault, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Excel.XlSaveAsAccessMode.xlNoChange, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value);

            }
            catch (Exception e)
            {
                Console.WriteLine(e.ToString());

            }
        }



    }

К сожалению, я получил ошибку: не удалось получить фабрику класса COM для компонента с CLSID {00024500-0000-0000-C000-000000000046} из-за следующей ошибки: 80070005 Доступ запрещен.(Исключение из HRESULT: 0x80070005 (E_ACCESSDENIED)).

Любая идея, как я могу экспортировать SQL в Excel?

Answer 1

Лучше всего просто записать это в CSV.Excel регистрируется в качестве обработчика файлов CSV, поэтому по умолчанию он открывается в Excel.

Например:

private void SQLToCSV(string query, string Filename)
{

    SqlConnection conn = new SqlConnection(connection);
    conn.Open();
    SqlCommand cmd = new SqlCommand(query, conn);
    SqlDataReader dr = cmd.ExecuteReader();

    using (System.IO.StreamWriter fs = new System.IO.StreamWriter(Filename))
    {
        // Loop through the fields and add headers
        for (int i = 0; i < dr.FieldCount; i++)
        {
            string name = dr.GetName(i);
            if (name.Contains(","))
                name = "\"" + name + "\"";

            fs.Write(name + ",");
        }
        fs.WriteLine();

        // Loop through the rows and output the data
        while (dr.Read())
        {
            for (int i = 0; i < dr.FieldCount; i++)
            {
                string value = dr[i].ToString();
                if (value.Contains(","))
                    value = "\"" + value + "\"";

                fs.Write(value + ",");
            }
            fs.WriteLine();
        }

        fs.Close();
    }
}

Answer 2

C # SQL в Excel

Позвоните вам SP из базы данных

public DataTable GetDrugUtilizationReport_IndividualGenerateFile(long pharmacyId, DateTime from, DateTime to, long DrugNameId, int sortBy)
{
    var parameters = new Dictionary<string, object>
        {
            { "PharmacyId", pharmacyId },
            { "DateFrom", from },
            { "DateTo", to },
            { "DrugNameId", DrugNameId },
            { "SortBy", sortBy }
        };

    return ExecuteQuery("RPT_DrugUtilizationReportByIndividualGenerateFile", CommandType.StoredProcedure, parameters);
}

Используйте в своем коде C #

private void OnCreateFileCommand(object obj)
{

    string path, parameterLabel;
    path = ConfigurationManager.AppSettings["VSSPORTEXELExportPath"];
    parameterLabel = FromDate.ToString("yyyy-MM-dd") + "_" + ToDate.ToString("yyyy-MM-dd");

    try
    {
        path =
            ExcelUtlity.ExportDataToExcel(
                dataTable:
                    context.GetDrugUtilizationReport_IndividualGenerateFile(GlobalVar.Pharminfo.pharminfo_PK,
                        FromDate, ToDate, SelectedDrug != null ? SelectedDrug.drugnameid_PK : 0,
                        sortBy: SortBy + 1),
                directoryPath: path,
                fileName_withoutExt: "DrugUtilizationReport" + "__" + parameterLabel,
                skipComplexObjects: true,
                skipInheritedProps: true);

        DXMessageBox.Show("Data exported successfully at \"" + path + "\".", GlobalVar.MessageTitle,
            MessageBoxButton.OK, MessageBoxImage.Information);
    }
    catch (Exception ex)
    {
        string errorMessage = ExceptionHelper.ProcessException(ex);
        DXMessageBox.Show(errorMessage, GlobalVar.MessageTitle, MessageBoxButton.OK, MessageBoxImage.Error);
    }

}

Утилита Excel

public static string ExportDataToExcel(DataTable dataTable, string directoryPath, string fileName_withoutExt, bool skipComplexObjects, bool skipInheritedProps, string[] skipProps = null)
{
    if (directoryPath[directoryPath.Length - 1] == '\\') // no need to check for >0 length. let it throw an exection for that
        directoryPath = directoryPath + "\\";

    using (var spreadSheet = new SpreadsheetControl())
    {
        // Create new excel document and import the datatable to the worksheet
        spreadSheet.CreateNewDocument();
        spreadSheet.BeginUpdate();
        var worksheet = spreadSheet.Document.Worksheets.ActiveWorksheet;
        worksheet.Import(source: dataTable, addHeader: true, firstRowIndex: 0, firstColumnIndex: 0);

        // applying style on header
        Range range = worksheet.Range["A1:" + worksheet.Columns[worksheet.Columns.LastUsedIndex].Heading+"1"];
        Formatting rangeFormatting = range.BeginUpdateFormatting();
        rangeFormatting.Fill.BackgroundColor = System.Drawing.Color.LightSteelBlue;
        rangeFormatting.Font.FontStyle = SpreadsheetFontStyle.Bold;
        range.AutoFitColumns();
        range.EndUpdateFormatting(rangeFormatting);

        spreadSheet.EndUpdate();
        fileName_withoutExt += ".xlsx";
        Directory.CreateDirectory(directoryPath); // if directory already exists, CreateDirectory will do nothing
        spreadSheet.SaveDocument(directoryPath + fileName_withoutExt, DocumentFormat.OpenXml);

        return directoryPath + fileName_withoutExt;
    }
}

Использование Microsoft Office dll

public bool WriteDataTableToExcel(System.Data.DataTable dataTable, string worksheetName, string saveAsLocation, string ReporType)
{
    Microsoft.Office.Interop.Excel.Application excel;
    Microsoft.Office.Interop.Excel.Workbook excelworkBook;
    Microsoft.Office.Interop.Excel.Worksheet excelSheet;
    Microsoft.Office.Interop.Excel.Range excelCellrange;

    try
    {
        // Start Excel and get Application object.
        excel = new Microsoft.Office.Interop.Excel.Application();

        // for making Excel visible
        excel.Visible = false;
        excel.DisplayAlerts = false;

        // Creation a new Workbook
        excelworkBook = excel.Workbooks.Add(Type.Missing);

        // Workk sheet
        excelSheet = (Microsoft.Office.Interop.Excel.Worksheet)excelworkBook.ActiveSheet;
        excelSheet.Name = worksheetName;

        excelSheet.Cells[1, 1] = ReporType;
        excelSheet.Cells[1, 2] = "Date : " + DateTime.Now.ToShortDateString();

        // loop through each row and add values to our sheet
        int rowcount = 2;

        foreach (DataRow datarow in dataTable.Rows)
        {
            rowcount += 1;
            for (int i = 1; i <= dataTable.Columns.Count; i++)
            {
                // on the first iteration we add the column headers
                if (rowcount == 3)
                {
                    excelSheet.Cells[2, i] = dataTable.Columns[i - 1].ColumnName;
                    excelSheet.Cells.Font.Color = System.Drawing.Color.Black;
                }

                excelSheet.Cells[rowcount, i] = datarow[i - 1].ToString();

                //for alternate rows
                if (rowcount > 3)
                {
                    if (i == dataTable.Columns.Count)
                    {
                        if (rowcount % 2 == 0)
                        {
                            excelCellrange = excelSheet.Range[excelSheet.Cells[rowcount, 1], excelSheet.Cells[rowcount, dataTable.Columns.Count]];
                            FormattingExcelCells(excelCellrange, "#CCCCFF", System.Drawing.Color.Black, false);
                        }

                    }
                }
            }
        }

        // now we resize the columns
        excelCellrange = excelSheet.Range[excelSheet.Cells[1, 1], excelSheet.Cells[rowcount, dataTable.Columns.Count]];
        excelCellrange.EntireColumn.AutoFit();
        Microsoft.Office.Interop.Excel.Borders border = excelCellrange.Borders;
        border.LineStyle = Microsoft.Office.Interop.Excel.XlLineStyle.xlContinuous;
        border.Weight = 2d;


        excelCellrange = excelSheet.Range[excelSheet.Cells[1, 1], excelSheet.Cells[2, dataTable.Columns.Count]];
        FormattingExcelCells(excelCellrange, "#000099", System.Drawing.Color.White, true);


        //now save the workbook and exit Excel

        excelworkBook.SaveAs(saveAsLocation); ;
        excelworkBook.Close();
        excel.Quit();

        return true;
    }
    catch (Exception ex)
    {
        DXMessageBox.Show(ex.Message);
        return false;
    }
    finally
    {
        excelSheet = null;
        excelCellrange = null;
        excelworkBook = null;
    }

}

/// <summary>
/// FUNCTION FOR FORMATTING EXCEL CELLS
/// </summary>
/// <param name="range"></param>
/// <param name="HTMLcolorCode"></param>
/// <param name="fontColor"></param>
/// <param name="IsFontbool"></param>
public void FormattingExcelCells(Microsoft.Office.Interop.Excel.Range range, string HTMLcolorCode, System.Drawing.Color fontColor, bool IsFontbool)
{
    range.Interior.Color = System.Drawing.ColorTranslator.FromHtml(HTMLcolorCode);
    range.Font.Color = System.Drawing.ColorTranslator.ToOle(fontColor);
    if (IsFontbool == true)
    {
        range.Font.Bold = IsFontbool;
    }
}

Answer 3

Я изменил код, который был приведен выше, и работает. Редактировать в соответствии с вашими требованиями

namespace ExcelExport
{

public class ExportToExcel
{
    string strCon = ConfigurationManager.ConnectionStrings["SafewayGVDemoDBContext"].ConnectionString;
    private Microsoft.Office.Interop.Excel.Application app;
    private Microsoft.Office.Interop.Excel.Workbook workbook;
    private Microsoft.Office.Interop.Excel.Worksheet previousWorksheet;
    // private Excel.Range workSheet_range;
    private string folder;

    public ExportToExcel(string folder)
    {

        this.folder = folder;
        this.app = null;
        this.workbook = null;
        this.previousWorksheet = null;
        // this.workSheet_range = null;

        createDoc();
    }

    private void createDoc()
    {
        try
        {
            app = new Microsoft.Office.Interop.Excel.Application();
            app.Visible = false;
            workbook = app.Workbooks.Add(1);
        }
        catch (Exception excThrown)
        {
            throw new Exception(excThrown.Message);
        }
        finally
        {
        }
    }

    public void shutDown()
    {
        try
        {
            workbook = null;
            app.Quit();
        }
        catch (Exception excThrown)
        {
            throw new Exception(excThrown.Message);
        }
        finally
        {
        }
    }

    public void ExportTable(string procName, string sheetName)
    {
        SqlDataReader myReader = null;
        try
        {

            Microsoft.Office.Interop.Excel.Worksheet worksheet = (Microsoft.Office.Interop.Excel.Worksheet)workbook.Sheets.Add(Missing.Value, Missing.Value, 1, Microsoft.Office.Interop.Excel.XlSheetType.xlWorksheet);
            using (SqlConnection Sqlcon = new SqlConnection(strCon))
            {
                SqlCommand cmd = new SqlCommand();
                Sqlcon.Open();
                cmd.Connection = Sqlcon;
                cmd.CommandType = CommandType.StoredProcedure;
                cmd.CommandText = procName;
                cmd.Parameters.Add(new SqlParameter("@pvchAction", SqlDbType.VarChar, 50));
                cmd.Parameters.Add("@pIntErrDescOut", SqlDbType.Int).Direction = ParameterDirection.Output;
                cmd.Parameters["@pvchAction"].Value = "select";
                worksheet.Name = sheetName;
                previousWorksheet = worksheet;

                myReader = cmd.ExecuteReader();

                int columnCount = myReader.FieldCount;

                for (int n = 0; n < columnCount; n++)
                {
                    //Console.Write(myReader.GetName(n) + "\t");
                    createHeaders(worksheet, 1, n + 1, myReader.GetName(n));
                }

                int rowCounter = 2;
                while (myReader.Read())
                {
                    for (int n = 0; n < columnCount; n++)
                    {
                        //Console.WriteLine();
                        //Console.Write(myReader[myReader.GetName(n)].ToString() + "\t");
                        addData(worksheet, rowCounter, n + 1, myReader[myReader.GetName(n)].ToString());
                    }
                    rowCounter++;
                }
            }

        }

        catch (Exception e)
        {
            Console.WriteLine(e.ToString());

        }
        finally
        {
            if (myReader != null && !myReader.IsClosed)
            {
                myReader.Close();
            }
            myReader = null;
        }

    }

    public void createHeaders(Microsoft.Office.Interop.Excel.Worksheet worksheet, int row, int col, string htext)
    {
        worksheet.Cells[row, col] = htext;
    }

    public void addData(Microsoft.Office.Interop.Excel.Worksheet worksheet, int row, int col, string data)
    {
        worksheet.Cells[row, col] = data;
    }

    public void SaveWorkbook()
    {

        String folderPath = @"C:\My Files\" + this.folder;

        if (!System.IO.Directory.Exists(folderPath))
        {
            System.IO.Directory.CreateDirectory(folderPath);
        }

        string fileNameBase = "db";
        String fileName = fileNameBase;
        string ext = ".xlsx";
        int counter = 1;
        //System.IO.File.Open(folderPath + fileName + ext, System.IO.FileMode.Open);
        while (System.IO.File.Exists(folderPath + @"\"+ fileName + ext))
        {
            fileName = fileNameBase + counter;
            counter++;
        }

        fileName = fileName + ext;

        string filePath = folderPath +@"\"+ fileName;

        try
        {
            workbook.SaveAs(filePath, Microsoft.Office.Interop.Excel.XlFileFormat.xlWorkbookDefault, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Microsoft.Office.Interop.Excel.XlSaveAsAccessMode.xlNoChange, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value);

        }
        catch (Exception e)
        {
            Console.WriteLine(e.ToString());

        }
    }

}

Answer 4

                ExcelPackage EP = new ExcelPackage();

                ExcelWorksheet Sheet = 
                EP.Workbook.Worksheets.Add("subscriptions");
                Sheet.Cells["A1"].Value = "Email";
                Sheet.Cells["A1"].Style.Font.Bold = true;

                Sheet.Cells["B1"].Value = "First Name";
                Sheet.Cells["B1"].Style.Font.Bold = true;

                Sheet.Cells["C1"].Value = "Middle Name";
                Sheet.Cells["C1"].Style.Font.Bold = true;

                Sheet.Cells["D1"].Value = "Last Name";
                Sheet.Cells["D1"].Style.Font.Bold = true;

                Sheet.Cells["E1"].Value = "Date Created";
                Sheet.Cells["E1"].Style.Font.Bold = true;

                Sheet.Cells["F1"].Value = "Subscribed";
                Sheet.Cells["F1"].Style.Font.Bold = true;

                var collection = MyRepository.GetSubscriptionsAll();
                int row = 2;
                foreach (var item in collection)
                {
                    Sheet.Cells[string.Format("A{0}", row)].Value = item.Email;
                    Sheet.Cells[string.Format("B{0}", row)].Value 
  =item.FistName;
                    Sheet.Cells[string.Format("C{0}", row)].Value 
  =item.MiddleName;
                    Sheet.Cells[string.Format("D{0}", row)].Value 
  =item.LastName;
                    Sheet.Cells[string.Format("E{0}", row)].Value =   
       .DateCreated.ToString();
                    Sheet.Cells[string.Format("F{0}", row)].Value = 
   (item.Subscribed == false 
         ? "No" : "Yes"); ;

                    row++;
                }

                Sheet.Cells["A:AZ"].AutoFitColumns();
                System.Web.HttpContext.Current.Response.Clear();
                System.Web.HttpContext.Current.Response.ContentType = 
      "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
                System.Web.HttpContext.Current.Response.AddHeader("content- 
  disposition", 
      "attachment: filename=" + "ListofSubscribers.xlsx");

    System.Web.HttpContext.Current.Response.BinaryWrite(EP.GetAsByteArray());
                System.Web.HttpContext.Current.Response.End();
            }

Answer 5

 private void button1_Click(object sender, EventArgs e)
        {

            string StartDate = Start_Date.Value.Date.ToString("MM/dd/yyyy").Replace("-", "/");
            string EndDate = End_Date.Value.Date.ToString("MM/dd/yyyy").Replace("-", "/");

            string LogFolder = @"C:\Log\";
            try
            {
                string StoredProcedureName = comboBox1.Text;

                SqlConnection SQLConnection = new SqlConnection();
                SQLConnection.ConnectionString = ConnectionString;   

                //Load Data into DataTable from by executing Stored Procedure
                string queryString =
                  "EXEC  " + StoredProcedureName + " @Ifromdate ='" + StartDate + "',@Itodate ='" + EndDate+"'";


                SqlDataAdapter adapter = new SqlDataAdapter(queryString, SQLConnection);
                DataSet ds = new DataSet();
                adapter.Fill(ds);
                DataTable DtValue = new DataTable();
                DtValue = (ds.Tables[0]);


            }

            catch (Exception exception)
            {
                // Create Log File for Errors
                using (StreamWriter sw = File.CreateText(LogFolder
                    + "\\" + "ErrorLog_" + datetime + ".log"))
                {
                    sw.WriteLine(exception.ToString());
                }
            }

        }

///JUST add ClosedXMl.dll
        public void DataTableToExcel(DataTable dt)
        {
            string FileName = "Records";
            string SheetName = "Records";
            string folderPath = "C:\\New\\";
            if (!Directory.Exists(folderPath))
            {
                Directory.CreateDirectory(folderPath);
            }
            using (XLWorkbook wb = new XLWorkbook())
            {
                wb.Worksheets.Add(dt, SheetName);
                wb.SaveAs(folderPath + "\\" + FileName + ".xlsx");
            }
        }

Answer 6

Это на сто процентов работает для VS-2013 Premium для C # для тестирования закодированного пользовательского интерфейса. просто скопируйте и вставьте код. Он работает для базы данных SQL Server. Вы можете сохранить данные в xls, xlsx или csv и использовать тот же CSV для параметризации. чтобы он работал, вам нужно установить следующие пакеты.

с использованием System.Data.SqlClient

с использованием Excel = Microsoft.Office.Interop.Excel

с использованием SQL = System.Data

/// *** Скопируйте отсюда и вставьте его в / для создания кода для этого теста, выберите «Создать код для теста закодированного пользовательского интерфейса» в контекстном меню и выберите один из пунктов меню.

    SqlConnection cnn;
        string connectionstring = null;
        string sql = null;
        string data = null;
        int i = 0;
        int j = 0;



        ////*** Preparing excel Application

        Excel.Application xlApp;
        Excel.Workbook xlWorkBook;
        Excel.Worksheet xlWorkSheet;
        object misValue = System.Reflection.Missing.Value;

        ///*** Opening Excel application

        xlApp = new Microsoft.Office.Interop.Excel.Application();
        xlWorkBook = xlApp.Workbooks.Open(@"C:\Users\MM18100\Documents\Visual Studio 2013\Projects\SQL\SQL\Book1.csv");
        xlWorkSheet = (Excel.Worksheet)(xlWorkBook.ActiveSheet as Excel.Worksheet);


        ////*** It will always remove the prvious result from the CSV file so that we can get always the updated data
        xlWorkSheet.UsedRange.Select();
        xlWorkSheet.UsedRange.Delete(Excel.XlDeleteShiftDirection.xlShiftUp);
        xlApp.DisplayAlerts = false;
        //xlWorkBook.Save();

        /////***Opening SQL Database

        connectionstring = "Integrated Security = SSPI;Initial Catalog=Exascale; Data Source=DCNA-Q-SQL-07;";
        cnn = new SqlConnection(connectionstring);
        cnn.Open();

        ////** Write your Sql Query here
        sql = "SELECT  TOP 10 [FirstName],[MiddleName],[LastName],[Email],[AltEmail],[Phone],[AltPhoneNumber],[Mobile],[Fax],[CompanyName],[AuthorizedUserName],[AuthorizedUserPhone],[CreatedDate],[ModifiedDate],[VERSION],[LanguageID],[TaxID],[CustomerType]FROM [Exascale].[dbo].[Customer] Where [FirstName] = 'Automation'";

        ///*** Preparing to retrieve value from the database
        SQL.DataTable dtable = new SQL.DataTable();

        SqlDataAdapter dscmd = new SqlDataAdapter(sql, cnn);
        SQL.DataSet ds = new SQL.DataSet();
        dscmd.Fill(dtable);

        ////*** Generating the column Names here

        string[] colNames = new string[dtable.Columns.Count];

        int col = 0;

        foreach (SQL.DataColumn dc in dtable.Columns)
            colNames[col++] = dc.ColumnName;

        char lastColumn = (char)(65 + dtable.Columns.Count - 1);

        xlWorkSheet.get_Range("A1", lastColumn + "1").Value2 = colNames;
        xlWorkSheet.get_Range("A1", lastColumn + "1").Font.Bold = true;
        xlWorkSheet.get_Range("A1", lastColumn + "1").VerticalAlignment
                    = Excel.XlVAlign.xlVAlignCenter;

        /////*** Inserting the Column and Values into Excel file



        for (i = 0 ; i <= dtable.Rows.Count - 1; i++)
            {
                for (j = 0; j <= dtable.Columns.Count-1; j++)
                  {
                          data = dtable.Rows[i].ItemArray[j].ToString();
                          xlWorkSheet.Cells[i + 2, j + 1] = data;

                }
            }


        ///**Saving the csv file without notification.
            xlApp.DisplayAlerts = false;
            xlWorkBook.Save();

            //xlWorkBook.SaveAs("Book1.csv", 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:\\Users\\MM18100\\Documents\\informations.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();
        }

    }

Answer 7

Поскольку вы используете Excel 2010, самое простое решение - загрузить PowerPivot от Microsoft и выполнить запрос SQL напрямую.Это создаст обновляемое подключение к данным, которое вытягивает данные из запроса в сводную таблицу.

http://www.microsoft.com/bi/en-us/Solutions/Pages/PowerPivot.aspx

Answer 8

2 простых параметров:

1) для использования мастера импорта и экспорта SQL-сервера, который можно использовать для экспорта любой таблицы из вашей базы данных в Excel (просто убедитесь, что сопоставление правильное)

2) Было бы просто запустить оператор SQL, а затем в окне результатов ниже, выбрать все, щелкнуть правой кнопкой мыши и сделать «Копировать с заголовками», а затем просто вставить результаты в Excel

Answer 9

Свяжите свои данные в виде сетки .... и используйте следующий код .....

protected void ImageButton1_Click1(object sender, ImageClickEventArgs e)
{

    string attachment = "attachment; filename=Contacts.xls";
    Response.ClearContent();

    Response.AddHeader("content-disposition", attachment);
    Response.ContentType = "application/ms-excel";

    StringWriter sw = new StringWriter();HtmlTextWriter htw = new HtmlTextWriter(sw);
    GridView2.RenderControl(htw);

    Response.Write(sw.ToString());

    Response.End();

}