Question

我已动态创建了一些图表，并希望使用closedxml将数据导出到Excel。我在图例上创建了一个自定义项目，当我单击它时，页面回发并正确引发事件处理程序。但是我无法弹出保存窗口，因此无法保存excel文件。请帮帮我？

我在asp.NET Framework 4.5上使用C＃。

这是我的代码的简化版本。

protected void Page_Load(object sender, EventArgs e)
{
    Add_Chart();
}

public void Add_Chart()
{
    System.Web.UI.DataVisualization.Charting.Chart Add_Chart1 = new System.Web.UI.DataVisualization.Charting.Chart();
    //Create Chart here
    //Add chart to htmltablecell

    Add_Chart1.Click += Chart_Legend_Click;
}

protected void Chart_Button_Click(object sender, ImageMapEventArgs e)
{
    string sheetname = "trial";
    string filename = "trial.xlsx";
    var workbook = new XLWorkbook();
    var worksheet = workbook.Worksheets.Add(sheetname);

    HttpResponse httpResponse = Response;
    httpResponse.Clear();
    httpResponse.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
    httpResponse.AddHeader("content-disposition", "attachment;filename=" + filename);

    //Create header and data rows here

    using (System.IO.MemoryStream memoryStream = new System.IO.MemoryStream())
    {
        workbook.SaveAs(memoryStream);
        memoryStream.WriteTo(httpResponse.OutputStream);
        memoryStream.Close();
    }
    httpResponse.End();
}

如何从点击图表图例导出excel？

0 个答案: