如何加快写入Excel工作表

我正在使用Interop对象写入Excel电子表格。 使用秒表，我发现以下的实施非常及时。 foreach循环中的进程通常需要大约50秒来编写大约2000行，每行有9列。

有什么办法可以加速吗？

 List<string[]> allEntries = fillStringArrayList(); // Set-up for running Excel xls = new Excel.Application(); workBooks = xls.Workbooks; workBook = workBooks.Open(workbookPath); var workSheet = workBook.Sheets["Sheet1"]; // Insert new entries foreach (string[] entry in allEntries) { // Get the final row in the sheet that is being used Excel.Range usedRange = workSheet.UsedRange; int rowCount = usedRange.Rows.Count; // Format Column A to be type "text" workSheet.Cells[rowCount + 1, 1].NumberFormat = "@"; workSheet.Cells[rowCount + 1, 1] = entry[0]; workSheet.Cells[rowCount + 1, 2] = entry[1]; workSheet.Cells[rowCount + 1, 3] = entry[2]; workSheet.Cells[rowCount + 1, 4] = entry[3]; workSheet.Cells[rowCount + 1, 5] = entry[4]; workSheet.Cells[rowCount + 1, 6] = entry[5]; workSheet.Cells[rowCount + 1, 7] = entry[6]; workSheet.Cells[rowCount + 1, 8] = entry[7]; workSheet.Cells[rowCount + 1, 9] = entry[8]; } 

Answer 1

尝试将数组分配给一个范围，而不是按单元格分隔和分配：

 Excel.Range c1 = (Excel.Range)workSheet.Cells[rowCount + 1, 1]; Excel.Range c2 = (Excel.Range)workSheet.Cells[rowCount + 1, 9]; Excel.Range range = workSheet.get_Range(c1, c2); range.Value = entry; 

编辑：如果你想加快事情，你可以分配一个二维数组（string[，]，其中第一个维度是行，第二个列）的范围相同的大小。

 int firstLine = rowCount + 1; Excel.Range c1 = (Excel.Range)workSheet.Cells[firstLine, 1]; //Gets the size of the first dimension of the array int arrayXSize = allEntries.GetLength(0); Excel.Range c2 = (Excel.Range)workSheet.Cells[firstLine + arrayXSize -1, 9]; Excel.Range range = workSheet.get_Range(c1, c2); //allEntries is a string[,] range.Value = allEntries;