Export SQL to Excel
本文关键字：Excel to SQL Export | 更新日期: 2023-09-27 18:18:21
如何从SQL server 2008导出数据到Excel 2010或更高版本?
i have try on SQL way:
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
不幸的是，我收到错误:OLEDB提供程序'Microsoft.Jet.OLEDB.4.0'不能用于分布式查询，因为该提供程序被配置为以STA模式运行。
，然后我尝试c#的方式:
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());
}
}
}
不幸的是，我得到了错误:为CLSID为{0002450 -0000-0000- c000 -000000000046}的组件检索COM类工厂失败，原因是以下错误:(Exception from HRESULT: 0x80070005 (E_ACCESSDENIED)).
如何导出SQL到Excel ?
最好的方法可能是将其写入CSV。Excel将自己注册为CSV文件的文件处理程序，因此默认情况下它将在Excel中打开。
例如: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();
}
}
c# SQL Excel
从数据库中调用SP
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);
}
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);
}
}
Excel Utility
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;
}
}
使用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;
}
}
我已经修改了上面给出的代码，并且正在工作。根据您的要求编辑
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());
}
}
}
由于您使用Excel 2010，最简单的解决方案是从微软下载PowerPivot并直接执行SQL查询。这将创建一个可刷新的数据连接，将数据从Query拉到数据透视表中。
http://www.microsoft.com/bi/en-us/Solutions/Pages/PowerPivot.aspx这是百分之百适用于VS-2013 Premium for c#的编码UI测试。复制粘贴代码就行了。您可以将数据保存为xls、xlsx或csv，并可以使用相同的csv进行参数化。您需要安装以下包才能使其工作。
使用System.Data.SqlClient 使用Excel = Microsoft.Office.Interop.Excelusing SQL = System。数据
///***从这里复制并粘贴到/要为这个测试生成代码，从快捷菜单中选择"为编码UI测试生成代码"，并选择其中一个菜单项。
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();
}
}
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");
}
}
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();
}
Excel 2016及更新版本自带Power Query功能(旧版本也可以使用，但需要单独安装)。使用这个工具，您可以直接从数据库中提取数据到excel中。
在Excel的"数据"选项卡上选择"获取数据"->"从数据库"->"从SQL Server数据库"。输入数据库信息，在"高级选项"下，您可以粘贴SQL查询并直接在Excel中提取数据。这适用于许多不同的数据库类型、平面文件和其他源。
两个简单的选项是:
1)使用SQL server导入和导出向导，您可以使用该向导从Excel数据库中导出任何表(只需确保映射是正确的)
2)将只是运行你的sql语句，然后在你的结果窗口下面，选择所有和右键单击，做一个"复制与标题"，然后只是粘贴结果在Excel
将数据绑定到网格视图....并使用以下代码.....
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();
}