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我正在开发一个具有 gridview 控件的网页。我需要将数据传输为 .xls 格式。我能够创建 .xls 文件并传输数据，但问题是我需要将网格单元格显示在 Excel 工作表的背景中。现在，它只显示没有网格单元的空白背景。否则，gridview 会被很好地转移。由于这个问题，打印 .xls 文件是个问题。具有更多列的表格不会压缩，而是打印 2-3 页。我的代码如下：

public static void ExportToXLS(string fileName, GridView gv,string companyName,string reportTitle , string period)
    {
        //For writing to XLS file
        HttpContext.Current.Response.Clear();
        HttpContext.Current.Response.AddHeader("content-disposition", string.Format("attachment; filename={0}", fileName));
        HttpContext.Current.Response.ContentType = "application/ms-excel";

        using (StringWriter sw = new StringWriter())
        {
            using (HtmlTextWriter htw = new HtmlTextWriter(sw))
            {

                Table tableReport = new Table();
                tableReport.GridLines = gv.GridLines;

                //  add the header row to the table
                if (gv.HeaderRow != null)
                {
                    ReportList.PrepareControlForExport(gv.HeaderRow);
                    tableReport.Rows.Add(gv.HeaderRow);
                }

                //  add each of the data rows to the table
                foreach (GridViewRow row in gv.Rows)
                {
                    ReportList.PrepareControlForExport(row);
                    tableReport.Rows.Add(row);
                }

                //  add the footer row to the table
                if (gv.FooterRow != null)
                {
                    ReportList.PrepareControlForExport(gv.FooterRow);
                    tableReport.Rows.Add(gv.FooterRow);
                }

                //Takes value of company name
                System.Web.UI.WebControls.Label labelCompany = new System.Web.UI.WebControls.Label();
                labelCompany.Text = companyName;
                labelCompany.Font.Bold = true;

                //Takes value of report title
                System.Web.UI.WebControls.Label labelReport = new System.Web.UI.WebControls.Label();
                labelReport.Text = reportTitle;
                labelReport.Font.Bold = true;

                //Takes value of report period
                System.Web.UI.WebControls.Label labelPeriod = new System.Web.UI.WebControls.Label();
                labelPeriod.Text = period;

                //  render the htmlwriter into the response
                htw.Write("<center>");
                labelCompany.RenderControl(htw);
                htw.Write("<br/>");
                labelReport.RenderControl(htw);
                htw.Write("<br/>");
                labelPeriod.RenderControl(htw);
                htw.Write("</center>");
                htw.Write("<br/>");
                tableReport.RenderControl(htw);
                HttpContext.Current.Response.Write(sw.ToString());
                HttpContext.Current.Response.End();
            }
        }
    }

有什么建议么？

4

5 回答 5

1

参考：导出网格

尝试这个：

protected void btnExportExcel_Click(object sender, EventArgs e)

    {     

        Response.Clear();
        Response.Buffer = true;

        Response.AddHeader("content-disposition",

         "attachment;filename=GridViewExport.xls");

        Response.Charset = "";

        Response.ContentType = "application/vnd.ms-excel";

        StringWriter sw = new StringWriter();

        HtmlTextWriter hw = new HtmlTextWriter(sw);

        grdExport.AllowPaging = false;

        oMailing.GetData(out ODs);

        grdExport.DataSource = ODs;

        grdExport.DataBind();

        //Change the Header Row back to white color

        grdExport.HeaderRow.Style.Add("background-color", "#FFFFFF");

        //Apply style to Individual Cells

        grdExport.HeaderRow.Cells[0].Style.Add("background-color", "green");

        grdExport.HeaderRow.Cells[1].Style.Add("background-color", "green");

        grdExport.HeaderRow.Cells[2].Style.Add("background-color", "green");

        grdExport.HeaderRow.Cells[3].Style.Add("background-color", "green");

        grdExport.HeaderRow.Cells[4].Style.Add("background-color", "green");

        grdExport.RenderControl(hw);

        //style to format numbers to string

        string style = @"<style> .textmode { mso-number-format:\@; } </style>";

        Response.Write(style);

        Response.Output.Write(sw.ToString());

        Response.Flush();

        Response.End();

    }
于 2012-04-20T07:26:55.857 回答
0

首先参考这个：How to export nested gridview to excel/word with gridlines on child grid，希望它能帮助你解决你的问题。

参考：如何在控制台类型的应用程序中将 gridview 导出为 excel？

您可以参考以下链接中的 Export To Excel 控件。这是一个自定义控件。希望它可以帮助你。

http://exporttoexcel.codeplex.com/

样式导出的网格：

 protected void btnExportExcel_Click(object sender, EventArgs e)
        {
            Response.Clear();
            Response.Buffer = true;

            Response.AddHeader("content-disposition",
             "attachment;filename=GridViewExport.xls");

            Response.Charset = "";
            Response.ContentType = "application/vnd.ms-excel";
            StringWriter sw = new StringWriter();
            HtmlTextWriter hw = new HtmlTextWriter(sw);

            grdExport.AllowPaging = false;
            oMailing.GetData(out ODs);
            grdExport.DataSource = ODs;
            grdExport.DataBind();

            //Change the Header Row back to white color
            grdExport.HeaderRow.Style.Add("background-color", "#FFFFFF");

            //Apply style to Individual Cells
            grdExport.HeaderRow.Cells[0].Style.Add("background-color", "green");

            grdExport.HeaderRow.Cells[1].Style.Add("background-color", "green");

            grdExport.HeaderRow.Cells[2].Style.Add("background-color", "green");

            grdExport.HeaderRow.Cells[3].Style.Add("background-color", "green");

            grdExport.HeaderRow.Cells[4].Style.Add("background-color", "green");

            for (int i = 0; i < grdExport.Rows.Count; i++)
            {
                GridViewRow row = grdExport.Rows;

                //Change Color back to white
                row.BackColor = System.Drawing.Color.White;

                //Apply text style to each Row
                row.Attributes.Add("class", "textmode");

                //Apply style to Individual Cells of Alternating Row
                if (i % 2 != 0)
                {
                    row.Cells[0].Style.Add("background-color", "#C2D69B");
                    row.Cells[1].Style.Add("background-color", "#C2D69B");
                    row.Cells[2].Style.Add("background-color", "#C2D69B");
                    row.Cells[3].Style.Add("background-color", "#C2D69B");
                    row.Cells[4].Style.Add("background-color", "#C2D69B");
                }

            }
            grdExport.RenderControl(hw);
            //style to format numbers to string
            string style = @"<style> .textmode { mso-number-format:\@; } </style>";
            Response.Write(style);
            Response.Output.Write(sw.ToString());
            Response.Flush();
            Response.End();
        }
于 2012-04-20T07:38:16.330 回答
0

我尝试导出到excel，似乎你首先需要创建一个使用部分Excel = using Microsoft.Office.Interop.Excel，当你点击按钮时，只需创建一个具有工作簿和工作表属性的excel类，然后使用gridview属性Gridview.Row[].cell[].Text.，你可以动态存储每个值将 gridview 写入工作表，然后将其写入FILE....

于 2012-12-10T09:23:01.730 回答
0 
  Response.Clear();
  Response.Buffer = true;
  Response.AddHeader("content-disposition",attachment;filename=GridViewExport.xls");
  Response.Charset = "";
  Response.ContentType = "application/vnd.ms-excel";

  StringWriter sw = new StringWriter();
  HtmlTextWriter hw = new HtmlTextWriter(sw);
于 2012-04-20T06:48:42.060 回答
0

所有的答案都会让你得到你想要的——你只是错过了格式化部分。

归根结底，您真正创建的是 Excel 可以读取的 HTML 文件（带有 HTML 表格）。@BhaskarreddyMule 中的 RESPONSE 标头“强制”客户端将文件视为“xls”文件，并且如果它运行 Excel 并打开它（但底线是它不是真正的“本机”Excel 文件。

现在已经不碍事了，用 HTML 来思考。像在 HTML 中一样设置列、行和文本内容的样式。这就是您控制格式的方式（即老派“nowrap”以防止包装单元格内容、字体大小等）。

我有一段时间没有这样做了（当我需要这样做时，我已经转向 Excel XML 和 VB.Net XML 文字）所以我不确定你有多少控制级别RenderControl......或者如果您必须更进一步“老派”并从头开始构建 HTML 表格字符串.....

于 2012-04-20T07:26:55.837 回答