点击UltraWebGrid单元格中的链接，下载文件
<mce:script type="text/javascript"><!-- function Download(fileID) { __doPostBack('<%= LinkButton1.ClientID %>', ''); } // --></mce:script> <!--注意，切不可放在updatepanel中 --> <asp:LinkButton ID="LinkButton1" runat="server" οnclick="LinkButton1_Click"></asp:LinkButton>
后台
protected void Grid_InitializeRow(object sender, RowEventArgs e) { string fullpath = ""; if (String.IsNullOrEmpty(e.Row.Cells[9].Text)) return; fullpath = ContextHelper.GetUploadFileURL(e.Row.Cells[9].Text); state.DownLoadFileGuid = e.Row.Cells[9].Text; state.FileName = e.Row.Cells[10].Text; state.Save(Session); e.Row.Cells[10].Value = (String.IsNullOrEmpty(e.Row.Cells[10].Text)) ? null : "<a href="#" mce_href="#" οnclick=Download('" + e.Row.Cells[9].Text + "'); title='" + e.Row.Cells[10].Text + "'>" + e.Row.Cells[10].Text + "</a>"; }
protected void LinkButton1_Click(object sender, EventArgs e) { Response.ContentType = "application/octet-stream"; //通知浏览器下载文件而不是打开 Response.AddHeader("Content-Disposition", "attachment; filename=" + HttpUtility.UrlEncode(state.FileName, System.Text.Encoding.UTF8)); Response.BinaryWrite( ContextHelper.GetUploadFileData(state.DownLoadFileGuid)); Response.Flush(); Response.End(); }
其中state是自己封装的session类，实际跟session[XX]=XX的操作是一样的,ContextHelper.GetUploadFileData也是自己实现的类，功能是返回文件的二进制数据