将 Gridview 导出到 Excel：无法导出显示的正确数据

Posted 2023-05-09

【中文标题】将 Gridview 导出到 Excel：无法导出显示的正确数据

【英文标题】：Export Gridview to Excel: Cannot export the correct data displayed

【发布时间】：2012-05-20 02:01:47

【问题描述】：

我需要将我的 gridview 数据导出到 Excel。这没有问题。 一切正常 问题是我可以将过滤器应用于网格中显示的数据。当我只想导出那些数据时（一旦应用过滤器），它会导出过滤器之前网格中先前包含的所有数据。

我希望我足够清楚......

这是我正在使用的代码：

    public void ExportGridToExcel(GridView grdGridView, string fileName)
    
        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);

        grdGridView.AllowPaging = false;
        grdGridView.DataBind();

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

        // Apply style to Individual Cells
        grdGridView.HeaderRow.Cells[0].Style.Add("background-color", "green");
        grdGridView.HeaderRow.Cells[1].Style.Add("background-color", "green");
        grdGridView.HeaderRow.Cells[2].Style.Add("background-color", "green");
        grdGridView.HeaderRow.Cells[3].Style.Add("background-color", "green");
        grdGridView.HeaderRow.Cells[4].Style.Add("background-color", "green");
        grdGridView.HeaderRow.Cells[5].Style.Add("background-color", "green");
        grdGridView.HeaderRow.Cells[6].Style.Add("background-color", "green");

        for (int i = 0; i < grdGridView.Rows.Count; i++)
        
            GridViewRow row = grdGridView.Rows[i];

            // 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");
                row.Cells[5].Style.Add("background-color", "#C2D69B");
                row.Cells[6].Style.Add("background-color", "#C2D69B");
            
        
        grdGridView.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();
    

我如何应用过滤器（一切正常）

    public void refreshGridFactures()
    
        DateTime? debutFacture = null;
        DateTime? FinFacture = null;
        DateTime? DebutReglement = null;
        DateTime? FinReglement = null;
        int? NumeroFacture = 0;

        if (PickerDateDebut.SelectedDate != null)  debutFacture = PickerDateDebut.SelectedDate; 
        if (PickerDateFin.SelectedDate != null)  FinFacture = PickerDateFin.SelectedDate; 
        if (PickerDebutReglement.SelectedDate != null)  DebutReglement = PickerDebutReglement.SelectedDate; 
        if (PickerFinReglement.SelectedDate != null)  FinReglement = PickerFinReglement.SelectedDate; 
        int IdEntreprise = Convert.ToInt32(ddlEntreprises.SelectedValue);
        string Intitule = txtIntitule.Text;
        if (txtNumeroFacture.Text != "")  NumeroFacture = Convert.ToInt32(txtNumeroFacture.Text); 

        List<DBAccess.Facturation> listFacturation = DBAccess.DAOFacturation.GetFactures(IdEntreprise, debutFacture, FinFacture, DebutReglement, FinReglement, Intitule, NumeroFacture);
        GridFactures.DataSource = listFacturation;
        GridFactures.DataBind();

        double total = Math.Round(listFacturation.Sum(a => a.MontantTTC), 2);
        double totalHT = Math.Round(listFacturation.Sum(a => a.MontantHT), 2);

        lblTotalTTC.Text = "Montant total TTC : " + total;
        lblTotalHT.Text = "Montant total HT : " + totalHT;
    

感谢您的帮助

【问题讨论】：

实际上您正在导出为 HTML，因为 grdGridView.RenderControl(hw) 将创建一个表格 ;-)

【参考方案1】：

在您的GridViewRow row = grdGridView.Rows[i]; 之后添加一个检查以查看该行是否可见

if(!row.Visible) continue;