如何将视图导出到 excel ASP.NET MVC

Question

我不是 ASP.NET MVC 专家，但我需要处理一个小项目并需要一些帮助。

基本上我正在做的是一个用于提交或列出一些文本报告的 MVC 项目，我在模型上使用了数据库优先方法。所以我有这个我之前创建的表格模型，但没有做好计划。开始项目后，我碰巧不得不向其中添加一些图像，这在我设计数据模型时并非如此，我通过脱离 MVC 哲学以非常糟糕的方式解决了这个问题，但它有效.

So I added an "img" folder to the project and put the .jpeg files inside.

..我在视图中显示了来自模型的数据中的图像：

...@foreach (var item in Model) {
<tr>
    <td>            
       <img src="~/img/@string.Format("{0}.jpeg",item.emailid)"/>
    </td>
    <td>
        @Html.DisplayFor(modelItem => item.emailid)
    </td>
    <td>
        @Html.DisplayFor(modelItem => item.date)
    </td>
    <td>
        @Html.DisplayFor(modelItem => item.task1)
    </td>.......

然后我使用以下代码将该视图导出到 excel 文件：

public ActionResult ExportData()
    {
        GridView gv = new GridView();
        gv.DataSource = db.web_weeklyreports.Include(w => w.web_kategori).Include(w => w.web_kategori1).Include(w => w.web_kategori2).Include(w => w.web_kategori3).Include(w => w.web_kategori4).ToList();
        gv.DataBind();
        Response.ClearContent();
        Response.Buffer = true;
        Response.AddHeader("content-disposition", "attachment; filename=WeeklyReports.xls");
        Response.ContentType = "application/ms-excel";
        Response.Charset = "";
        StringWriter sw = new StringWriter();
        HtmlTextWriter htw = new HtmlTextWriter(sw);
        gv.RenderControl(htw);
        Response.Output.Write(sw.ToString());
        Response.Flush();
        Response.End();

        return RedirectToAction("adminreports");
    }

除图像外，此代码运行良好，因为在 DataSource 上只有模型信息，而我的图像不在模型中，它们位于解决方案内的文件夹中，如上所示。

所以我可以导出除图像之外的视图，我还需要将这些图像导出到 excel 报告。

So this is my view with images

有什么帮助吗？

Answer 1

我用这个class

解决了

        public ActionResult ExportData()
    {
        GridView gv = new GridView();
        var data = db.web_weeklyreports.Include(w => w.web_kategori).Include(w => w.web_kategori1).Include(w => w.web_kategori2).Include(w => w.web_kategori3).Include(w => w.web_kategori4).ToList();

        gv.AutoGenerateColumns = false;
        gv.Columns.Add(new ImageField { HeaderText="IMG",  DataImageUrlField = "Imagepath", DataImageUrlFormatString = "https://localhost:44353/img/{0}.jpeg",  });
        gv.Columns.Add(new BoundField { HeaderText="ID", DataField = "ID" });
        gv.Columns.Add(new BoundField { HeaderText="Email", DataField = "emailid" });
        gv.Columns.Add(new BoundField { HeaderText="Date", DataField = "date" });
        gv.Columns.Add(new BoundField { HeaderText="Task 1", DataField = "task1" });
        gv.Columns.Add(new BoundField { HeaderText="", DataField = "t1kategoriid" });
        gv.Columns.Add(new BoundField { HeaderText="", DataField = "task2" });
        gv.Columns.Add(new BoundField { HeaderText="", DataField = "t2kategoriid" });
        gv.Columns.Add(new BoundField { HeaderText="", DataField = "task3" });
        gv.Columns.Add(new BoundField { HeaderText="", DataField = "t3kategoriid" });
        gv.Columns.Add(new BoundField { HeaderText="", DataField = "task4" });
        gv.Columns.Add(new BoundField { HeaderText="", DataField = "t4kategoriid" });
        gv.Columns.Add(new BoundField { HeaderText="", DataField = "task5" });
        gv.Columns.Add(new BoundField { HeaderText="", DataField = "t5kategoriid" });

        DataTable dt = new DataTable();
        dt.Columns.Add("Imagepath");
        dt.Columns.Add("ID");
        dt.Columns.Add("emailid");
        dt.Columns.Add("date");
        dt.Columns.Add("task1");
        dt.Columns.Add("t1kategoriid");
        dt.Columns.Add("task2");
        dt.Columns.Add("t2kategoriid");
        dt.Columns.Add("task3");
        dt.Columns.Add("t3kategoriid");
        dt.Columns.Add("task4");
        dt.Columns.Add("t4kategoriid");
        dt.Columns.Add("task5");
        dt.Columns.Add("t5kategoriid");

        foreach (var item in data)
        {                 
            dt.Rows.Add(item.emailid, item.ID, item.emailid, item.date, item.task1, item.t1kategoriid, item.task2, item.t2kategoriid, item.task3, item.t3kategoriid, item.task4, item.t4kategoriid, item.task5, item.t5kategoriid);                
        }

        gv.DataSource = dt;
        gv.DataBind();

        for (int i = 0; i < data.Count; i++)
        {
            gv.Rows[i].Height = 40;
        }

        Response.ClearContent();
        Response.Buffer = true;
        Response.AddHeader("content-disposition", "attachment; filename=WeeklyReports.xls");
        Response.ContentType = "application/ms-excel";
        Response.Charset = "";
        StringWriter sw = new StringWriter();
        HtmlTextWriter htw = new HtmlTextWriter(sw);
        gv.RenderControl(htw);
        Response.Output.Write(sw.ToString());
        Response.Flush();
        Response.End();

        return RedirectToAction("adminreports");
    }

现在我可以导出像 this:

这样的图像了

如何将视图导出到 excel ASP.NET MVC

How to export view to the excel ASP.NET MVC

c#

asp.net-mvc

export-to-excel

viewrendering