C#創建一個空白Excel


private void button5_Click(object sender, EventArgs e)
{
  string currentPath = Directory.GetCurrentDirectory();
  WriteExcel(textBox3.Text + textBox4.Text+".xlsx");
  MessageBox.Show("文件創建成功!");
}

public void WriteExcel(string filename)
{
  Microsoft.Office.Interop.Excel.Application excelApp = new Microsoft.Office.Interop.Excel.Application();
  if (excelApp == null)
  {
    MessageBox.Show("抱歉在你的電腦上沒有安裝Excel");
    return;
  }

  //判斷指定路徑中是否存在要創建的Excel
  Microsoft.Office.Interop.Excel.Workbook workBook;
  if (File.Exists(filename))
  {
    workBook = excelApp.Workbooks.Open(filename, 0, false, 5, "", "", true, Microsoft.Office.Interop.Excel.XlPlatform.xlWindows, "\t", false, false, 0, true, 1, 0);
  }
  else
  {
    workBook = excelApp.Workbooks.Add(true);
  }

  Microsoft.Office.Interop.Excel.Worksheet workSheet = workBook.ActiveSheet as Microsoft.Office.Interop.Excel.Worksheet;

  excelApp.Visible = false;
  excelApp.DisplayAlerts = false;

  workBook.SaveAs(filename);
  workBook.Close(false, Missing.Value, Missing.Value);

  excelApp.Quit();
  workSheet = null;
  workBook = null;
  excelApp = null;
  GC.Collect();
}


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