另存为将文件导出为ex​​cel C＃的对话框

Question

我将多个数据表作为不同的工作表导出到一个excel文件，它工作正常。但是，excel文件将保存到指定的路径。我想要一个另存为对话框，用户可以从中选择保存文件的路径。我在点击按钮时尝试了以下代码：

protected void excelexport(object sender, EventArgs e)
{
    try
    {
        string sql = null;
        string data = null;
        string path = "C:\\inetpub/wwwroot/MahindraEarth/exportexcel/exportexcel";

        int i = 0;
        int j = 0;

        Excel.Application xlApp;
        Excel.Workbook xlWorkBook;
        xlApp = new Excel.ApplicationClass();

        object misValue = System.Reflection.Missing.Value;

        xlApp = new Excel.ApplicationClass();
        xlWorkBook = xlApp.Workbooks.Add(misValue);

        System.Data.DataTable dt = new System.Data.DataTable();
        System.Data.DataTable dts = new System.Data.DataTable(); ;
        System.Data.DataTable dss = new System.Data.DataTable();
        Enquiry gs = new Enquiry();
        ResultClass objres = gs.fn_GetEnquiryList();
        if (objres.bStatus)
        {
            eslist<Enquiry> OBJLIST = objres.objData as eslist<Enquiry>;
            if (OBJLIST.Count > 0)
            {
                dt = (DataTable)OBJLIST;
            }
        }
        Operator op = new Operator();
        ResultClass objrest = op.fn_GetOperatorList();
        if (objrest.bStatus)
        {
            eslist<Operator> OBJLISTS = objrest.objData as eslist<Operator>;
            if (OBJLISTS.Count > 0)
            {
                dts = (DataTable)OBJLISTS;
            }
        }
        Contact co = new Contact();
        ResultClass objress = co.fn_GetContactList();
        if (objress.bStatus)
        {
            eslist<Contact> OBJLISS = objress.objData as eslist<Contact>;
            if (OBJLISS.Count > 0)
            {
                dss = (DataTable)OBJLISS;
            }
        }

        DataSet dataSet = new DataSet();
        dataSet.Tables.Add(dt);
        dataSet.Tables.Add(dts);
        dataSet.Tables.Add(dss);
        SaveFileDialog saveFileDialog = new SaveFileDialog();

        String[] Worksheets = new String[dataSet.Tables.Count];
        Excel.Worksheet[] xlWorkSheet = new Excel.Worksheet[dataSet.Tables.Count];
        for (int k = 0; k < dataSet.Tables.Count; k++)
        {
            DataTable dst = dataSet.Tables[k];
            xlWorkSheet[k] = (Excel.Worksheet)xlWorkBook.Worksheets.get_Item(k + 1);

            for (i = 0; i <= dst.Rows.Count - 1; i++)
            {
                for (j = 0; j <= dst.Columns.Count - 1; j++)
                {
                    xlWorkSheet[k].Cells[1, j + 1] = dataSet.Tables[k].Columns[j].ColumnName;
                    data = dst.Rows[i].ItemArray[j].ToString();
                    xlWorkSheet[k].Cells[i + 2, j + 1] = data;
                    xlWorkSheet[k].Name = dataSet.Tables[k].TableName;
                }
            }
        }

        xlWorkBook.SaveAs(path + ".xls", Excel.XlFileFormat.xlWorkbookNormal, misValue, misValue, misValue, misValue, Excel.XlSaveAsAccessMode.xlExclusive, misValue, misValue, misValue, misValue, misValue);
        xlWorkBook.Close(true, misValue, misValue);
        xlApp.Quit();
        for (int p = 0; p < 3; p++)
        {
            releaseObject(xlWorkSheet[p]);
        }
        releaseObject(xlWorkBook);
        releaseObject(xlApp);
        exportsuccess.Style.Add("display", "");
    }
    catch (Exception ex)
    {
    }
}
private void releaseObject(object obj)
{
    try
    {
        System.Runtime.InteropServices.Marshal.ReleaseComObject(obj);
        obj = null;
    }
    catch (Exception ex)
    {
        obj = null;
    }
    finally
    {
        GC.Collect();
    }
}

如何将保存为对话框以便将多个数据表保存在多个工作表中而不是单个工作表中。

谢谢，

Answer 1

试一试。这应该会给你另存为对话框。有些代码应该与您的代码类似，这应该可以让您了解应该附加此代码摘录的位置。

    #region Save & Quit
    //Save and quit, use SaveCopyAs since SaveAs does not always work
    Guid id = Guid.NewGuid();
    string uniqueFileName = id.ToString() + ".xls";
    string fileName = Server.MapPath("~/" + uniqueFileName);
    xlApp.DisplayAlerts = false; //Supress overwrite request
    xlWorkBook.SaveAs(fileName, Microsoft.Office.Interop.Excel.XlFileFormat.xlWorkbookNormal, misValue, misValue, misValue, misValue, Microsoft.Office.Interop.Excel.XlSaveAsAccessMode.xlExclusive, misValue, misValue, misValue, misValue, misValue);
    xlWorkBook.Close(true, misValue, misValue);
    xlApp.Quit();

    //Release objects
    releaseObject(xlWorkSheet);
    releaseObject(xlWorkBook);
    releaseObject(xlApp);

    //Give the user the option to save the copy of the file anywhere they desire
    String FilePath = Server.MapPath("~/" + uniqueFileName);
    System.Web.HttpResponse response = System.Web.HttpContext.Current.Response;
    response.ClearContent();
    response.Clear();
    response.ContentType = "application/vnd.ms-excel";
    response.AddHeader("Content-Disposition", "attachment; filename=MyClaimsReport-" + DateTime.Now.ToShortDateString() + ".xls;");
    response.TransmitFile(FilePath);
    response.Flush();
    response.Close();

    //Delete the temporary file
    DeleteFile(fileName);
    #endregion

private void DeleteFile(string fileName)
{
    if (File.Exists(fileName))
    {
        try
        {
            File.Delete(fileName);
        }
        catch (Exception ex)
        {
            //Could not delete the file, wait and try again
            try
            {
                System.GC.Collect();
                System.GC.WaitForPendingFinalizers();
                File.Delete(fileName);
            }
            catch
            {
                //Could not delete the file still
            }
        }
    }
}