是否有可能只有一个进程执行WRITE而许多进程在excel文件上执行READ操作?我正在使用ExcelPackage(EPPlus).
为了演示,我编写了两个控制台应用程序,用于迭代编写,另一个用于阅读.同时运行它们会导致任何一方出现故障.
写
// simply write to a column
var fileLocation = "D:\\Book.xlsx";
FileInfo fi = new FileInfo(fileLocation);
int i = 1;
while (1 == 1) //ALERT: an infinite loop!
{
using (ExcelPackage excelPackage = new ExcelPackage(fi))
{
ExcelWorksheet worksheet = excelPackage.Workbook.Worksheets["Sheet1"];
var row = worksheet.Row(2);
worksheet.Cells[$"A{i}"].Value = "Test " + i.ToString();
excelPackage.Save();
i++;
}
}
读
//simply populate a list reading excel
var fileLocation = "D:\\Book.xlsx";
FileInfo fi = new FileInfo(fileLocation);
List<string> list = new List<string>();
ExcelWorksheet worksheet = null;
int i = 1;
while (1 == 1) //ALERT: an infinite loop!
{
using (ExcelPackage excelPackage = new ExcelPackage(fi))
{
worksheet = excelPackage.Workbook.Worksheets["Sheet1"];
if (worksheet.Cells[i, 1].Value != null)
{
list.Add(worksheet.Cells[i, 1].Value.ToString());
}
}
list.Clear();
}
最佳答案 在阅读时,您无法同时读取和写入相同的文件.您可以将整个文件读入内存,然后您可以处理它,处理后您可以将其写回.