导出到 Excel 时，如何在 GridView 中使用显示名称属性？

Question

当我将列表导出到 Excel 文件时，我想使用 [DisplayName()] 属性设置列标题文本。任何解决方案？

GridView gv = new GridView();
gv.DataSource = ExportList;

gv.DataBind();

 System.Web.HttpContext.Current.Response.ClearContent();
 System.Web.HttpContext.Current.Response.Buffer = true;
 System.Web.HttpContext.Current.Response.AddHeader("content-disposition", "attachment; filename=Rapor.xls");
 System.Web.HttpContext.Current.Response.ContentType = "application/ms-excel";
 System.Web.HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.Unicode;
 System.Web.HttpContext.Current.Response.BinaryWrite(System.Text.Encoding.Unicode.GetPreamble());
StringWriter sw = new StringWriter();
HtmlTextWriter htw = new HtmlTextWriter(sw);
gv.RenderControl(htw);
System.Web.HttpContext.Current.Response.Output.Write(sw.ToString());
System.Web.HttpContext.Current.Response.Flush();
System.Web.HttpContext.Current.Response.End();

Answer 1

您必须RowDataBound像这样使用网格事件：在创建 gv 后首先放置此行：

gv.RowDataBound+=GvOnRowDataBound;

然后按照这个代码：

private void GvOnRowDataBound(object sender, GridViewRowEventArgs e)
{
    if (e.Row.RowType == DataControlRowType.Header)
    {
        for (int i = 0; i < e.Row.Cells.Count;i++)
        {
            var customAttributes =
                typeof (YourClass).GetProperty(e.Row.Cells[i].Text).CustomAttributes.ToList();
            var displayNameAttribute =
                customAttributes.FirstOrDefault(
                    aa => aa.AttributeType.FullName.Equals("System.ComponentModel.DisplayNameAttribute"));
            if (displayNameAttribute != null)
                e.Row.Cells[i].Text = displayNameAttribute.ConstructorArguments[0].ToString();
        }
    }
}

记住更改YourClass您的班级名称。