如何使用C＃将数据从SQL Server数据库写入格式化的Excel文件

我可以将SQL Server表中的数据写入Excel文件并将其保存在我想要的任何位置。 我想通过在C:\Format\Sample.xlsx读取格式化的Excel文件来升级它，这个文件有三张纸：第一张是我将在第二张纸中填充数据然后导出的布局。 是否有可能将数据写入第二张纸，保留第一张然后导出？

这里我现在的源代码：

  clsComboData cdSelectedItem = (clsComboData)cboMatRecv.SelectedItem; string PhaseNo = cdSelectedItem.ValueData; string RecvPlanDt = dtpMatRecv.Value.ToString(); string strSQL = null; string data = null; int i = 0; int j = 0; int ci = 0; Excel.Application xlApp; Excel.Workbook xlWorkBook; Excel.Worksheet xlWorkSheet; object misValue = System.Reflection.Missing.Value; xlApp = new Excel.Application(); xlWorkBook = xlApp.Workbooks.Add(misValue); xlWorkSheet = (Excel.Worksheet)xlWorkBook.Worksheets.get_Item(1); strSQL = "SELECT dbo.M_MAT.*, dbo.RecvPlan.*, dbo.RecvPlan.RecvPlanDt AS Expr1, dbo.RecvPlan.STNO AS Expr2, dbo.M_MAT.MatType AS Expr3 " + "FROM dbo.M_MAT INNER JOIN dbo.RecvPlan ON dbo.M_MAT.MatID = dbo.RecvPlan.MatID " + "WHERE (dbo.RecvPlan.RecvPlanDt = CONVERT(DATETIME, '" + RecvPlanDt + "', 102)) AND (dbo.RecvPlan.STNO = '"+ PhaseNo + "') AND (dbo.M_MAT.MatType = 0)"; clsCommFunc.gobjdb.SetSql(strSQL); clsCommFunc.gobjdb.ExecuteReader(); DataSet ds = new DataSet(); clsCommFunc.gobjdb.Fill(ds); //Header export for (ci = 0; ci < ds.Tables[0].Columns.Count; ci++) { xlWorkSheet.Cells[1, ci + 1] = ds.Tables[0].Columns[ci].ColumnName; xlWorkSheet.Cells[1, ci + 1].Font.Bold = true; } //Data export for (i = 0; i <= ds.Tables[0].Rows.Count - 1; i++) { for (j = 0; j <= ds.Tables[0].Columns.Count - 1; j++) { data = ds.Tables[0].Rows[i].ItemArray[j].ToString(); xlWorkSheet.Cells[i + 2, j + 1] = data; } } System.Windows.Forms.SaveFileDialog saveDlg = new System.Windows.Forms.SaveFileDialog(); saveDlg.InitialDirectory = @"C:\"; saveDlg.Filter = "Excel files (*.xlsx)|*.xlsx"; saveDlg.FilterIndex = 0; saveDlg.RestoreDirectory = true; saveDlg.Title = "Export Excel File To"; if (saveDlg.ShowDialog() == System.Windows.Forms.DialogResult.OK) { string path = saveDlg.FileName; xlWorkBook.SaveCopyAs(path); xlWorkBook.Saved = true; xlWorkBook.Close(true, misValue, misValue); xlApp.Quit(); } releaseObject(xlWorkSheet); releaseObject(xlWorkBook); releaseObject(xlApp); MessageBox.Show("Excel file created");