從C＃生成excel時出錯

Question

我有簡單的代碼生成Excel循環和生成excel表。

        Excel.Application XlApp = null;
        Excel.Workbook workbook = null;
        Excel.Worksheet Ws = null;

        XlApp = new Excel.Application();
        XlApp.Visible = true;
        workbook = XlApp.Workbooks.Add(XlWBATemplate.xlWBATWorksheet);
        Ws = (Excel.Worksheet)workbook.Worksheets[1];

        workbook.Worksheets.Add(Missing.Value,Missing.Value,  
        6, Missing.Value);

        for (int j = 0; j < 7; j++)
        {
             Ws = (Excel.Worksheet)workbook.Worksheets[j];
             Ws.Activate();
             Ws.Name = SheetName.ToString();//Sheetname has a Name 
        }

現在問題是當我們運行此代碼時，一切正常。 但有時會發生什么，在客戶端，沒有生成其中一個工作表名稱，它會跳過。 因此我們對它們的解決方案是嘗試再次生成工作表然后它工作正常，所以我的問題是為什么代碼跳過sheetName（ 有時 ），盡管代碼中沒有問題。 是否必須對客戶端其他正在運行的進程執行任何操作？

Answer 1

嘗試這個：

Excel.Application XlApp = null;
Excel.Workbook workbook = null;
Excel.Worksheet Ws = null;

XlApp = new Excel.Application();
XlApp.Visible = true;
workbook = XlApp.Workbooks.Add(Excel.XlWBATemplate.xlWBATWorksheet);

// here you get the first ws, index 1
Ws = (Excel.Worksheet)workbook.Worksheets[1];

workbook.Worksheets.Add(Missing.Value, Missing.Value,
6, Missing.Value);

var SheetName = "sheet_";
// here you should start from 1 (not from 0) and include 7 in the loop count
for (int j = 1; j <= 7; j++)
{
    // make sure that the ws name is unique
    SheetName=String.Format("sheet_{0}",j);
    Ws = (Excel.Worksheet)workbook.Worksheets[j];
    Ws.Activate();
    Ws.Name = SheetName;// this is already a string
}

XlApp.Quit();