c# - 将 GridView 导出到 Excel，而没有显示红色的超链接的 gridview 单元格

Question

我有一个 ASP.Net 4.0 GridView 和一个将 GridView 数据导出到 Excel 的按钮。这一切都很好。但是，在 GridView 中，每行的三个单元格中的文本是红色的，因为它们是超链接。当我将数据导出到 Excel 时，这些单元格仍然是红色的。我希望它们是黑色的。我该怎么做呢？这是我的代码：

        Response.ClearContent();
        Response.AppendHeader("content-disposition", "attachment; filename=Mobile.xls");
        Response.ContentType = "application/excel";

        StringWriter stringWriter = new StringWriter();
        HtmlTextWriter htmlTextWriter = new HtmlTextWriter(stringWriter);

        foreach (GridViewRow gridViewRow in gvResults.Rows)
        {
            gridViewRow.ForeColor = Color.Black;
            foreach (TableCell gridViewRowTableCell in gridViewRow.Cells)
                gridViewRowTableCell.Style["forecolor"] = "#000000";
            if (gridViewRow.RowType == DataControlRowType.DataRow)
            {
                for (int columnIndex = 0; columnIndex < gridViewRow.Cells.Count; columnIndex++)
                {
                    gridViewRow.Cells[columnIndex].Attributes.Add("class", "text");
                }

            }
        }

        gvResults.RenderControl(htmlTextWriter);
        string style = @"<style> .text { mso-number-format:\@; } </style> ";
        Response.Write(style);
        Response.Write(stringWriter.ToString());
        Response.End();

这是链接的代码。这运行 OnDataBound：

foreach (GridViewRow row in gvResults.Rows)
        {
            if (row.RowType == DataControlRowType.DataRow || row.RowType == DataControlRowType.EmptyDataRow)
            {
                string imei = row.Cells[0].Text;
                if (imei != " ")
                {
                    string imeiLink = "window.location='SmartphoneInventory.aspx?imei=" + imei + "';";
                    row.Cells[0].Attributes.Add("onClick", String.Format(imeiLink));
                    row.Cells[0].Text = "<span style='color:red'>" + row.Cells[0].Text + "</span>";
                }

                string phonenumber = row.Cells[1].Text;
                if (phonenumber != "&nbsp;")
                {
                    string phonenumberLink = "window.location='SmartphoneInventory.aspx?phonenumber=" + phonenumber + "';";
                    row.Cells[1].Attributes.Add("onClick", String.Format(phonenumberLink));
                    row.Cells[1].Text = "<span style='color:red'>" + row.Cells[1].Text + "</span>";
                }

                int cellCount = row.Cells.Count;
                string empName = row.Cells[cellCount - 1].Text;
                if (empName != "&nbsp;")
                {
                    string empNameLink = "window.location='DevicesByEmployee.aspx?empName=" + empName + "';";
                    row.Cells[cellCount - 1].Attributes.Add("onClick", String.Format(empNameLink));
                    row.Cells[cellCount - 1].Text = "<span style='color:red'>" + row.Cells[cellCount - 1].Text + "</span>";
                }
            }
        }     

我想我需要的是如何重新设计跨度。这可能吗？GridView 自动生成其列。

Answer 1

获取 LinkBut​​ton 文本，将其分配给 GridView 单元格文本并删除控件。

这是我在标题中做的：

C＃

foreach (TableCell c in gv.HeaderRow.Cells) {
    if (c.HasControls) {
        c.Text = (c.Controls(0) as LinkButton).Text;
        c.Controls.Clear();
    }
}

VB.NET

For Each c As TableCell In gv.HeaderRow.Cells
    If c.HasControls Then
        c.Text = TryCast(c.Controls(0), LinkButton).Text
        c.Controls.Clear()
    End If
Next

编辑：

创建扩展方法：

C＃

[Extension()]
public string StripTags(string html)
{
    return Regex.Replace(html, "<.*?>", "");
}

VB.NET

<Extension> _
Public Function StripTags(html As String) As String
    Return Regex.Replace(html, "<.*?>", "")
End Function

它将从您的字符串中删除标签，从而删除您的样式。使用如下：

    foreach (GridViewRow gridViewRow in gvResults.Rows)
    {
        gridViewRow.ForeColor = Color.Black;
        foreach (TableCell gridViewRowTableCell in gridViewRow.Cells)
            gridViewRowTableCell.Style["forecolor"] = "#000000";
        if (gridViewRow.RowType == DataControlRowType.DataRow)
        {
            for (int columnIndex = 0; columnIndex < gridViewRow.Cells.Count; columnIndex++)
            {
                gridViewRow.Cells[columnIndex].Text = gridViewRow.Cells[columnIndex].Text.StripTags();
            }

        }
    }