我想将此查询的结果导出到CSV文件，但是当我把它放在服务器上时它不起作用。
当我在本地运行时，它很好，但是一旦我将它上传到服务器，它就不会做任何事情并且崩溃应用程序。有人能帮帮我吗？
protected void btnExport_Click(object sender, EventArgs e)
{
string sCon = ConfigurationManager.ConnectionStrings["PayrollPlusConnectionString"].ConnectionString;
using (SqlConnection con = new SqlConnection(sCon))
{
using (SqlCommand cmd = new SqlCommand("SELECT DISTINCT ManualAdjustments.PTLName, ManualAdjustments.PTLStaffID, ManualAdjustments.CampusOccurred, ManualAdjustments.DeptOccurred, ManualAdjustments.DateOccurred, ManualAdjustments.CourseDetails, ManualAdjustments.Duration, ManualAdjustments.ValueOfDuration, ManualAdjustments.Grade, ManualAdjustments.CostCentre, ManualAdjustments.Comment, ManualAdjustments.Reason, ManualAdjustments.RatePerHour, ManualAdjustments.Pay, ManualAdjustments.PayPeriod FROM ManualAdjustments INNER JOIN PayrollPeriod ON ManualAdjustments.PayPeriod = PayrollPeriod.PayrollPeriod ORDER BY ManualAdjustments.PTLName"))
{
SqlDataAdapter sda = new SqlDataAdapter();
try
{
cmd.Connection = con;
con.Open();
sda.SelectCommand = cmd;
DataTable dt = new DataTable();
sda.Fill(dt);
if (dt.Rows.Count > 0)
{
string path = Server.MapPath("exportedfiles\\");
if (!Directory.Exists(path)) // CHECK IF THE FOLDER EXISTS. IF NOT, CREATE A NEW FOLDER.
{
Directory.CreateDirectory(path);
}
File.Delete(path + "ManualAdjustments.xlsx"); // DELETE THE FILE BEFORE CREATING A NEW ONE.
// ADD A WORKBOOK USING THE EXCEL APPLICATION.
Excel.Application xlAppToExport = new Excel.Application();
xlAppToExport.Workbooks.Add("");
// ADD A WORKSHEET.
Excel.Worksheet xlWorkSheetToExport = default(Excel.Worksheet);
xlWorkSheetToExport = (Excel.Worksheet)xlAppToExport.Sheets["Sheet1"];
// ROW ID FROM WHERE THE DATA STARTS SHOWING.
int iRowCnt = 2;
//// SHOW THE HEADER.
//xlWorkSheetToExport.Cells[1, 1] = "Manual Adjustments";
//Excel.Range range = xlWorkSheetToExport.Cells[1, 1] as Excel.Range;
//range.EntireRow.Font.Name = "Calibri";
//range.EntireRow.Font.Bold = true;
//range.EntireRow.Font.Size = 20;
//xlWorkSheetToExport.Range["A1:D1"].MergeCells = true; // MERGE CELLS OF THE HEADER.
// SHOW COLUMNS ON THE TOP.
xlWorkSheetToExport.Cells[iRowCnt - 1, 1] = "PTL Name";
xlWorkSheetToExport.Cells[iRowCnt - 1, 2] = "PTL Staff ID";
xlWorkSheetToExport.Cells[iRowCnt - 1, 3] = "Campus";
xlWorkSheetToExport.Cells[iRowCnt - 1, 4] = "Department";
xlWorkSheetToExport.Cells[iRowCnt - 1, 5] = "Date";
xlWorkSheetToExport.Cells[iRowCnt - 1, 6] = "Course Details";
xlWorkSheetToExport.Cells[iRowCnt - 1, 7] = "Duration";
xlWorkSheetToExport.Cells[iRowCnt - 1, 8] = "Value of Duration";
xlWorkSheetToExport.Cells[iRowCnt - 1, 9] = "Grade";
xlWorkSheetToExport.Cells[iRowCnt - 1, 10] = "Cost Centre";
xlWorkSheetToExport.Cells[iRowCnt - 1, 11] = "Reason";
xlWorkSheetToExport.Cells[iRowCnt - 1, 12] = "Comment";
xlWorkSheetToExport.Cells[iRowCnt - 1, 13] = "Rate Per Hour";
xlWorkSheetToExport.Cells[iRowCnt - 1, 14] = "Pay";
int i;
for (i = 0; i <= dt.Rows.Count - 1; i++)
{
xlWorkSheetToExport.Cells[iRowCnt, 1] = dt.Rows[i].Field<string>("PTLName");
xlWorkSheetToExport.Cells[iRowCnt, 2] = dt.Rows[i].Field<string>("PTLStaffID");
xlWorkSheetToExport.Cells[iRowCnt, 3] = dt.Rows[i].Field<string>("CampusOccurred");
xlWorkSheetToExport.Cells[iRowCnt, 4] = dt.Rows[i].Field<string>("DeptOccurred");
xlWorkSheetToExport.Cells[iRowCnt, 5] = dt.Rows[i].Field<string>("DateOccurred");
xlWorkSheetToExport.Cells[iRowCnt, 6] = dt.Rows[i].Field<string>("CourseDetails");
xlWorkSheetToExport.Cells[iRowCnt, 7] = dt.Rows[i].Field<string>("Duration");
xlWorkSheetToExport.Cells[iRowCnt, 8] = dt.Rows[i].Field<decimal>("ValueOfDuration");
xlWorkSheetToExport.Cells[iRowCnt, 9] = dt.Rows[i].Field<int>("Grade");
xlWorkSheetToExport.Cells[iRowCnt, 10] = dt.Rows[i].Field<string>("CostCentre");
xlWorkSheetToExport.Cells[iRowCnt, 11] = dt.Rows[i].Field<string>("Reason");
xlWorkSheetToExport.Cells[iRowCnt, 12] = dt.Rows[i].Field<string>("Comment");
xlWorkSheetToExport.Cells[iRowCnt, 13] = dt.Rows[i].Field<decimal>("RatePerHour");
xlWorkSheetToExport.Cells[iRowCnt, 14] = dt.Rows[i].Field<decimal>("Pay");
iRowCnt = iRowCnt + 1;
}
// FINALLY, FORMAT THE EXCEL SHEET USING EXCEL'S AUTOFORMAT FUNCTION.
//Excel.Range range1 = xlAppToExport.ActiveCell.Worksheet.Cells[4, 1] as Excel.Range;
//range1.AutoFormat(ExcelAutoFormat.xlRangeAutoFormatList3);
// SAVE THE FILE IN A FOLDER.
xlWorkSheetToExport.SaveAs(path + "ManualAdjustments.xlsx");
// CLEAR.
xlAppToExport.Workbooks.Close();
xlAppToExport.Quit();
xlAppToExport = null;
xlWorkSheetToExport = null;
}
}
catch (Exception ex)
{
lblConfirm.Text = ex.Message.ToString();
lblConfirm.Attributes.Add("style", "color:red; font: bold 14px/16px Sans-Serif,Arial");
}
finally
{
sda.Dispose();
sda = null;
//download file
try
{
string sPath = Server.MapPath("exportedfiles\\");
Response.AppendHeader("Content-Disposition", "attachment; filename=ManualAdjustments.xlsx");
Response.TransmitFile(sPath + "ManualAdjustments.xlsx");
Response.End();
}
catch (Exception ex) { }
}
}
}
}
尝试了一种不同的方法，但仍然无法正常工作，我认为这与尝试保存到PC上的本地文件有关。有没有办法解决这个问题？
protected void btnExportMA_Click（object sender，EventArgs e） { string strDelimiter =＆＃34;，＆＃34 ;; string cs = ConfigurationManager.ConnectionStrings [＆＃34; PayrollPlusConnectionString＆＃34;] .ConnectionString;
StringBuilder sb = new StringBuilder();
using (SqlConnection con = new SqlConnection(cs))
{
SqlDataAdapter da = new SqlDataAdapter("SELECT DISTINCT ManualAdjustments.PTLName, ManualAdjustments.PTLStaffID, ManualAdjustments.CampusOccurred, ManualAdjustments.DeptOccurred, ManualAdjustments.DateOccurred, ManualAdjustments.CourseDetails, ManualAdjustments.Duration, ManualAdjustments.ValueOfDuration, ManualAdjustments.Grade, ManualAdjustments.CostCentre, ManualAdjustments.Comment, ManualAdjustments.Reason, ManualAdjustments.RatePerHour, ManualAdjustments.Pay, ManualAdjustments.PayPeriod FROM ManualAdjustments INNER JOIN PayrollPeriod ON ManualAdjustments.PayPeriod = PayrollPeriod.PayrollPeriod ORDER BY ManualAdjustments.PTLName", con);
DataSet ds = new DataSet();
da.Fill(ds);
ds.Tables[0].TableName = "Manual Adjustments";
foreach (DataRow MADR in ds.Tables["Manual Adjustments"].Rows)
{
string PTLName = Convert.ToString(MADR["PTLName"]);
sb.Append(PTLName.ToString() + strDelimiter);
sb.Append(MADR["PTLStaffID"].ToString() + strDelimiter);
sb.Append("\r\n");
//add all other columns here (no delimiter in last column)
}
}
StreamWriter file = new StreamWriter(@"H:\ManualAdjustments.txt");
file.WriteLine(sb.ToString());
file.Close();
}
答案 0 :(得分：0)
using (ExcelPackage excelPack = new ExcelPackage())
{
// Add ExcelWorksheet ExcelWorksheet excelWorksheet = excelPack.Workbook.Worksheets.Add("NAME");
// formatting ExcelWorksheet here...
string sPath = Server.MapPath("exportedfiles\\");
string FileName =sPath + "ManualAdjustments.xlsx";
FileInfo fiCustom = new FileInfo(FileName);
excelPack.SaveAs(fiCustom);
System.Diagnostics.Process.Start(FileName, "cmd");
}
试试这个......