Question

我使用C＃开发了一个Windows-Form应用程序。

应用程序将读取Excel文件，将该值存储到数据表中，执行一些处理并将处理后的信息写入新的Excel文件。

写作时没有问题＆lt; 400行，如果是> 400，然后应用程序抛出异常Error saving file或System.OutOfMemoryException或ContextSwitchDeadlock was detected

还显示以下错误（在visual studio窗口内）： The CLR has been unable to transition from COM context 0x592b88 to COM context 0x592cf8 for 60 seconds. The thread that owns the destination context/apartment is most likely either doing a non pumping wait or processing a very long running operation without pumping Windows messages. This situation generally has a negative performance impact and may even lead to the application becoming non responsive or memory usage accumulating continually over time. To avoid this problem, all single threaded apartment (STA) threads should use pumping wait primitives (such as CoWaitForMultipleHandles) and routinely pump messages during long running operations.

worksheetToWrite.Cells["A" + Iteration1].Value = sMailID2.Trim();
worksheetToWrite.Cells["B" + Iteration1].Value = intCurrentBatchSize.ToString();

if (sFull1.Length <= 4000)
{
    worksheetToWrite.Cells["C" + Iteration1].Value = sFull1.Substring(0, sFull1.Length);
    worksheetToWrite.Cells["D" + Iteration1].Value = string.Empty;
    worksheetToWrite.Cells["E" + Iteration1].Value = string.Empty;
    worksheetToWrite.Cells["F" + Iteration1].Value = string.Empty;
    worksheetToWrite.Cells["G" + Iteration1].Value = string.Empty;
    worksheetToWrite.Cells["H" + Iteration1].Value = string.Empty;
    worksheetToWrite.Cells["I" + Iteration1].Value = string.Empty;
    worksheetToWrite.Cells["J" + Iteration1].Value = string.Empty;
    worksheetToWrite.Cells["K" + Iteration1].Value = string.Empty;
    worksheetToWrite.Cells["L" + Iteration1].Value = string.Empty;
}
else if (sFull1.Length > 4000 && sFull1.Length <= 8000)
{
    worksheetToWrite.Cells["C" + Iteration1].Value = sFull1.Substring(0, 4000);
    worksheetToWrite.Cells["D" + Iteration1].Value = sFull1.Substring(4000, sFull1.Length - 4000);
    worksheetToWrite.Cells["E" + Iteration1].Value = string.Empty;
    worksheetToWrite.Cells["F" + Iteration1].Value = string.Empty;
    worksheetToWrite.Cells["G" + Iteration1].Value = string.Empty;
    worksheetToWrite.Cells["H" + Iteration1].Value = string.Empty;
    worksheetToWrite.Cells["I" + Iteration1].Value = string.Empty;
    worksheetToWrite.Cells["J" + Iteration1].Value = string.Empty;
    worksheetToWrite.Cells["K" + Iteration1].Value = string.Empty;
    worksheetToWrite.Cells["L" + Iteration1].Value = string.Empty;
}
else if (sFull1.Length > 8000 && sFull1.Length <= 12000)
{
    worksheetToWrite.Cells["C" + Iteration1].Value = sFull1.Substring(0, 4000);
    worksheetToWrite.Cells["D" + Iteration1].Value = sFull1.Substring(4000, 4000);
    worksheetToWrite.Cells["E" + Iteration1].Value = sFull1.Substring(8000, sFull1.Length - 8000);
    worksheetToWrite.Cells["F" + Iteration1].Value = string.Empty;
    worksheetToWrite.Cells["G" + Iteration1].Value = string.Empty;
    worksheetToWrite.Cells["H" + Iteration1].Value = string.Empty;
    worksheetToWrite.Cells["I" + Iteration1].Value = string.Empty;
    worksheetToWrite.Cells["J" + Iteration1].Value = string.Empty;
    worksheetToWrite.Cells["K" + Iteration1].Value = string.Empty;
    worksheetToWrite.Cells["L" + Iteration1].Value = string.Empty;
}
else if (sFull1.Length > 12000 && sFull1.Length <= 16000)
{
    worksheetToWrite.Cells["C" + Iteration1].Value = sFull1.Substring(0, 4000);
    worksheetToWrite.Cells["D" + Iteration1].Value = sFull1.Substring(4000, 4000);
    worksheetToWrite.Cells["E" + Iteration1].Value = sFull1.Substring(8000, 4000);
    worksheetToWrite.Cells["F" + Iteration1].Value = sFull1.Substring(12000, sFull1.Length - 12000);
    worksheetToWrite.Cells["G" + Iteration1].Value = string.Empty;
    worksheetToWrite.Cells["H" + Iteration1].Value = string.Empty;
    worksheetToWrite.Cells["I" + Iteration1].Value = string.Empty;
    worksheetToWrite.Cells["J" + Iteration1].Value = string.Empty;
    worksheetToWrite.Cells["K" + Iteration1].Value = string.Empty;
    worksheetToWrite.Cells["L" + Iteration1].Value = string.Empty;
}
else if (sFull1.Length > 16000 && sFull1.Length <= 20000)
{
    worksheetToWrite.Cells["C" + Iteration1].Value = sFull1.Substring(0, 4000);
    worksheetToWrite.Cells["D" + Iteration1].Value = sFull1.Substring(4000, 4000);
    worksheetToWrite.Cells["E" + Iteration1].Value = sFull1.Substring(8000, 4000);
    worksheetToWrite.Cells["F" + Iteration1].Value = sFull1.Substring(12000, 4000);
    worksheetToWrite.Cells["G" + Iteration1].Value = sFull1.Substring(16000, sFull1.Length - 16000);
    worksheetToWrite.Cells["H" + Iteration1].Value = string.Empty;
    worksheetToWrite.Cells["I" + Iteration1].Value = string.Empty;
    worksheetToWrite.Cells["J" + Iteration1].Value = string.Empty;
    worksheetToWrite.Cells["K" + Iteration1].Value = string.Empty;
    worksheetToWrite.Cells["L" + Iteration1].Value = string.Empty;
}
else if (sFull1.Length > 20000 && sFull1.Length <= 24000)
{
    worksheetToWrite.Cells["C" + Iteration1].Value = sFull1.Substring(0, 4000);
    worksheetToWrite.Cells["D" + Iteration1].Value = sFull1.Substring(4000, 4000);
    worksheetToWrite.Cells["E" + Iteration1].Value = sFull1.Substring(8000, 4000);
    worksheetToWrite.Cells["F" + Iteration1].Value = sFull1.Substring(12000, 4000);
    worksheetToWrite.Cells["G" + Iteration1].Value = sFull1.Substring(16000, 4000);
    worksheetToWrite.Cells["H" + Iteration1].Value = sFull1.Substring(20000, sFull1.Length - 20000);
    worksheetToWrite.Cells["I" + Iteration1].Value = string.Empty;
    worksheetToWrite.Cells["J" + Iteration1].Value = string.Empty;
    worksheetToWrite.Cells["K" + Iteration1].Value = string.Empty;
    worksheetToWrite.Cells["L" + Iteration1].Value = string.Empty;
}
else if (sFull1.Length > 24000 && sFull1.Length <= 28000)
{
    worksheetToWrite.Cells["C" + Iteration1].Value = sFull1.Substring(0, 4000);
    worksheetToWrite.Cells["D" + Iteration1].Value = sFull1.Substring(4000, 4000);
    worksheetToWrite.Cells["E" + Iteration1].Value = sFull1.Substring(8000, 4000);
    worksheetToWrite.Cells["F" + Iteration1].Value = sFull1.Substring(12000, 4000);
    worksheetToWrite.Cells["G" + Iteration1].Value = sFull1.Substring(16000, 4000);
    worksheetToWrite.Cells["H" + Iteration1].Value = sFull1.Substring(20000, 4000);
    worksheetToWrite.Cells["I" + Iteration1].Value = sFull1.Substring(24000, sFull1.Length - 24000);
    worksheetToWrite.Cells["J" + Iteration1].Value = string.Empty;
    worksheetToWrite.Cells["K" + Iteration1].Value = string.Empty;
    worksheetToWrite.Cells["L" + Iteration1].Value = string.Empty;
}
else if (sFull1.Length > 28000 && sFull1.Length <= 32000)
{
    worksheetToWrite.Cells["C" + Iteration1].Value = sFull1.Substring(0, 4000);
    worksheetToWrite.Cells["D" + Iteration1].Value = sFull1.Substring(4000, 4000);
    worksheetToWrite.Cells["E" + Iteration1].Value = sFull1.Substring(8000, 4000);
    worksheetToWrite.Cells["F" + Iteration1].Value = sFull1.Substring(12000, 4000);
    worksheetToWrite.Cells["G" + Iteration1].Value = sFull1.Substring(16000, 4000);
    worksheetToWrite.Cells["H" + Iteration1].Value = sFull1.Substring(20000, 4000);
    worksheetToWrite.Cells["I" + Iteration1].Value = sFull1.Substring(24000, 4000);
    worksheetToWrite.Cells["J" + Iteration1].Value = sFull1.Substring(28000, sFull1.Length - 28000);
    worksheetToWrite.Cells["K" + Iteration1].Value = string.Empty;
    worksheetToWrite.Cells["L" + Iteration1].Value = string.Empty;
}
else if (sFull1.Length > 32000 && sFull1.Length <= 36000)
{
    worksheetToWrite.Cells["C" + Iteration1].Value = sFull1.Substring(0, 4000);
    worksheetToWrite.Cells["D" + Iteration1].Value = sFull1.Substring(4000, 4000);
    worksheetToWrite.Cells["E" + Iteration1].Value = sFull1.Substring(8000, 4000);
    worksheetToWrite.Cells["F" + Iteration1].Value = sFull1.Substring(12000, 4000);
    worksheetToWrite.Cells["G" + Iteration1].Value = sFull1.Substring(16000, 4000);
    worksheetToWrite.Cells["H" + Iteration1].Value = sFull1.Substring(20000, 4000);
    worksheetToWrite.Cells["I" + Iteration1].Value = sFull1.Substring(24000, 4000);
    worksheetToWrite.Cells["J" + Iteration1].Value = sFull1.Substring(28000, 4000);
    worksheetToWrite.Cells["K" + Iteration1].Value = sFull1.Substring(32000, sFull1.Length - 32000);
    worksheetToWrite.Cells["L" + Iteration1].Value = string.Empty;
}
else if (sFull1.Length > 36000 && sFull1.Length <= 40000)
{
    worksheetToWrite.Cells["C" + Iteration1].Value = sFull1.Substring(0, 4000);
    worksheetToWrite.Cells["D" + Iteration1].Value = sFull1.Substring(4000, 4000);
    worksheetToWrite.Cells["E" + Iteration1].Value = sFull1.Substring(8000, 4000);
    worksheetToWrite.Cells["F" + Iteration1].Value = sFull1.Substring(12000, 4000);
    worksheetToWrite.Cells["G" + Iteration1].Value = sFull1.Substring(16000, 4000);
    worksheetToWrite.Cells["H" + Iteration1].Value = sFull1.Substring(20000, 4000);
    worksheetToWrite.Cells["I" + Iteration1].Value = sFull1.Substring(24000, 4000);
    worksheetToWrite.Cells["J" + Iteration1].Value = sFull1.Substring(28000, 4000);
    worksheetToWrite.Cells["K" + Iteration1].Value = sFull1.Substring(32000, 4000);
    worksheetToWrite.Cells["L" + Iteration1].Value = sFull1.Substring(36000, sFull1.Length - 36000);
}

Iteration1表示行。除了第一行和第一行中的单元格之外，每个单元格中保存4000个字符。每行的第二列。

任何人都可以帮我解决。

Answer 1

以前我在每次迭代中都保存了Excel文件。现在我创建了一个新的数据表，将所有信息（写入Excel）合并到该数据表中。因此，在编写之前，所有迭代都已完成。将所有内容写入工作簿后，我将其保存。

现在工作正常，处理大量数据时没有问题。

代码：

<pre>ExcelWorksheet worksheetToWrite = packageToWrite1.Workbook.Worksheets["Lead Owners"];

     for (int i = 0; i < dtSalesPersonSingleSB.Columns.Count; i++)
     {
       worksheetToWrite.Cells[1, (i + 1)].Value = dtSalesPersonSingleSB.Columns[i].ColumnName; //dtSalesPersonSingle.Columns[i].ColumnName;
     }

     for (int i = 0; i < dtSalesPersonSingleSB.Rows.Count; i++)
     {
     // to do: format datetime values before printing
      for (int j = 0; j < dtSalesPersonSingleSB.Columns.Count; j++)
      {
        worksheetToWrite.Cells[(i + 2), (j + 1)].Value = dtSalesPersonSingleSB.Rows[i][j];
      }
     }
     packageToWrite1.Save();

感谢您的所有支持，以实现预期的结果。

获取“保存文件时出错”消息（或）检测到System.OutOfMemoryException（或）ContextSwitchDeadlock

1 个答案: