【发布时间】：2014-01-02 15:09:43
【问题描述】：
我编写了一个应用程序，该应用程序设置为访问我们的服务器，检查是否创建了任何待处理的作业，如果有任何可用的作业，则处理这些作业，创建一个包含结果的 Excel 文档，然后将它们通过电子邮件发送给我们的用户。它是使用 microsoft excel 2010 用 c#.net v3.5 编写的，每 30 分钟通过任务调度程序启动一次。我们的任务调度程序在运行 2008 r2 的服务器上运行。任务计划程序成功运行，数据库成功更新，就像处理作业一样，但是，它从不创建 excel 文件，我不知道为什么。如果我在我们的服务器机器上手动运行该应用程序，它可以顺利运行，但是当任务调度程序调用它时，它甚至还没有运行一次。没有权限问题，因为我是管理员，我什至尝试在我们的 IT 主管凭据下运行它，但无济于事。还检查了该文件夹是否具有创建/删除/编辑/等的完全访问权限。还尝试提供文件的绝对路径来代替相对路径。可以在下面找到用于创建 excel 文件的代码以及调用它的代码。提前致谢。
Excel 代码：
public static void Export(System.Data.DataTable dt,
string FileName,
string EmailTo)
{
Application xls = new Application();
xls.SheetsInNewWorkbook = 1;
// Create our new excel application and add our workbooks/worksheets
Workbooks workbooks = xls.Workbooks;
Workbook workbook = workbooks.Add();
Worksheet CompPartsWorksheet = (Worksheet)xls.Worksheets[1];
// Hide our excel object if it's visible.
xls.Visible = false;
// Turn off screen updating so our export will process more quickly.
xls.ScreenUpdating = false;
// Turn off calculations if set to automatic; this can help prevent memory leaks.
xls.Calculation = xls.Calculation == XlCalculation.xlCalculationAutomatic ? XlCalculation.xlCalculationManual : XlCalculation.xlCalculationManual;
// Create an excel table and fill it will our query table.
CompPartsWorksheet.Name = "Comp Request";
CompPartsWorksheet.Select();
{
// Create a row with our column headers.
for (int column = 0; column < dt.Columns.Count; column++)
{
CompPartsWorksheet.Cells[1, column + 1] = dt.Columns[column].ColumnName;
}
// Export our datatable information to excel.
for (int row = 0; row < dt.Rows.Count; row++)
{
for (int column = 0; column < dt.Columns.Count; column++)
{
CompPartsWorksheet.Cells[row + 2, column + 1] = (dt.Rows[row][column].ToString());
}
}
}
// Freeze our column headers.
xls.Application.Range["2:2"].Select();
xls.ActiveWindow.FreezePanes = true;
xls.ActiveWindow.DisplayGridlines = false;
// Autofit our rows and columns.
xls.Application.Cells.EntireColumn.AutoFit();
xls.Application.Cells.EntireRow.AutoFit();
// Select the first cell in the worksheet.
xls.Application.Range["$A$2"].Select();
// Turn off alerts to prevent asking for 'overwrite existing' and 'save changes' messages.
xls.DisplayAlerts = false;
// ******************************************************************************************************************
// This section is commented out for now but can be enabled later to have excel sheets show on screen after creation.
// ******************************************************************************************************************
// Make our excel application visible
//xls.Visible = true;
//// Turn screen updating back on
//xls.ScreenUpdating = true;
//// Turn automatic calulation back on
//xls.Calculation = XlCalculation.xlCalculationAutomatic;
string SaveFilePath = string.Format(@"{0}\Jobs\{1}.xlsx", Directory.GetCurrentDirectory(), FileName);
// string SaveFilePath = @"\\netapp02\Batch_Processes\Comp_Wisp\Comp_Wisp\bin\Debug\Jobs";
workbook.SaveAs(SaveFilePath, XlFileFormat.xlWorkbookNormal, Type.Missing, Type.Missing, Type.Missing, Type.Missing, XlSaveAsAccessMode.xlExclusive, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing);
workbook.Close();
// Release our resources.
Marshal.ReleaseComObject(workbook);
Marshal.ReleaseComObject(workbooks);
Marshal.ReleaseComObject(CompPartsWorksheet);
Marshal.ReleaseComObject(xls);
Marshal.FinalReleaseComObject(xls);
Send(Subject: FileName,
AttachmentPath: SaveFilePath,
EmailTo: EmailTo);
}
调用Excel创建方法的代码：
public static void ProcessJob(System.Data.DataTable Job)
{
try
{
for (int j = 0; j < Job.Rows.Count; j++)
{
// Temporary datatable to store our excel data.
System.Data.DataTable dt = new System.Data.DataTable();
// Output the current job name and split out our parts.
Console.Write(string.Format("JOB: {0}\r\n", Job.Rows[j]["JobID"]));
string[] searchlines = Job.Rows[j]["PartsList"].ToString().Replace("\n", "|").Split('|');
if (searchlines.Count() > MAX_TO_PROCESS)
{
// If our search is going to be above the desired processing maximum start the next job as well.
Thread RecursiveJob = new Thread(GetJob);
RecursiveJob.Start();
}
for (int i = 0; i < searchlines.Count(); i++)
{
// Determine if data reporting is turned on or off.
Boolean isReporting = DataCollection();
if (searchlines[i].Trim() != string.Empty)
{
Console.WriteLine(string.Format("Processing: {0}", searchlines[i]));
using (SqlConnection con = new SqlConnection(dbComp))
{
using (SqlDataAdapter da = Connect.ExecuteAdapter("[CompDatabase_SelectPartsFromComp]", con,
new SqlParameter("@PartNumber", searchlines[i].Trim()),
new SqlParameter("@CurrentMember", Job.Rows[j]["Email"].ToString()),
new SqlParameter("@DataCollection", isReporting)))
{
da.Fill(dt);
}
}
}
}
// Export our datatable to an excel sheet and save it.
try
{
Export(dt: dt,
FileName: string.Format("Comp Scheduled Job {0}", Job.Rows[j]["JobID"].ToString()),
EmailTo: Job.Rows[j]["Email"].ToString().Trim());
}
catch (Exception ex)
{
ErrorLog.Write(SourceName: "Comp Wisp",
ErrorMessage: ex.ToString(),
MethodOrFunction: "ProcessJob",
MemberName: Environment.UserName,
ErrorDescription: string.Format("Failed to create excel file on Job {0}.", Job.Rows[j]["JobID"].ToString()));
}
// Update the job to Complete in our database.
using (SqlConnection con = new SqlConnection(dbComp))
{
Console.WriteLine("Updating Job Status");
using (SqlDataReader dr = Connect.ExecuteReader("[CompWisp_UpdateJobStatus]", con,
new SqlParameter("@JobID", Job.Rows[j]["JobID"].ToString()))) { }
}
Console.Write("Complete\r\n\r\n");
}
GetJob();
}
catch (Exception ex)
{
ErrorLog.Write(SourceName: "CompWisp",
ErrorMessage: ex.ToString(),
MethodOrFunction: "ProcessJob");
}
}
【问题讨论】：
-
@GrantWinney 是的，我也尝试了绝对路径，但失败了。
-
@GrantWinney 如果您将此作为答案，我会接受。它与此有关，我之前测试过一次，但之前有一个问题甚至没有让它到达那部分，我猜其他开发人员在我们修复最初的问题之前已经将它改回来了......>。
标签： c# excel sql-server-2008-r2 scheduled-tasks windows-server-2008-r2