如何在新窗口中打开图像或pdf文件？

我有一个 gridview，它包含文件名和文件路径（图像和 pdf 格式文件），其中我使用了模板字段，在该字段下放置了 1 个图像按钮。单击该图像按钮（即“查看”按钮）时，我想在新窗口中打开所选文件。

这是我的代码：

protected void GVViewFile_SelectedIndexChanged(object sender, EventArgs e)
{
    int id = GVViewFile.SelectedIndex;
    string path = GVViewFile.Rows[id].Cells[2].Text.ToString();

    Response.Redirect("D:\UploadedAttachment\AT\MRD\AT0520130008_15-05-13-03-57-12.pdf");

    Response.Write("<script>");
   Response.Write("window.open('" + path + "','_blank', ' fullscreen=yes')");
   //Response.Write("window.open(" + path + ",'_blank')");
   Response.Write("</script>");

}

但我无法在新窗口中打开。我的路径返回与response.write()内部相同的值。当我只使用response.write("images/UserDetails.pdf");例如，它将显示 pdf 页面..但未采用完整路径。它还显示'\'错在response.write();那么如何使用实际的完整路径在新窗口中显示图像或 pdf..请帮助我。即使 window.open 给出错误。我无法在 window.open 中写入完整路径，因为我从 gridview.help 获取选定的路径....

我的网格视图代码：

 <asp:GridView ID="GVViewFile" runat="server" AutoGenerateColumns="False" 
        DataSourceID="DSforgridview" onselectedindexchanged="GVViewFile_SelectedIndexChanged"
        HeaderStyle-BackColor="#CC6600" HeaderStyle-ForeColor="White" 
    PagerStyle-BackColor="#CC6600" PagerStyle-ForeColor="White" CellPadding="3" 
    CellSpacing="3" PagerStyle-Width="4" PagerStyle-Height="4" 
    BorderColor="#FF6600" BorderStyle="Solid">
        <Columns>
            <asp:TemplateField ShowHeader="false">
        <ItemTemplate>
            <asp:ImageButton ID="btnView" runat="server" 
                CausesValidation="False" CommandName="Select"
                ImageUrl="~/Images/view.gif" ToolTip="View File" />
        </ItemTemplate>
      </asp:TemplateField>

            <asp:BoundField DataField="FileType" HeaderText="FileType" 
                SortExpression="FileType" />
            <asp:BoundField DataField="FileLocationPath" HeaderText="FileLocationPath" 
                SortExpression="FileLocationPath" />
        </Columns>
    <HeaderStyle BackColor="#CC6600" ForeColor="White"></HeaderStyle>
    <EmptyDataTemplate>No Records Found.</EmptyDataTemplate>
    </asp:GridView>

//In Default2.aspx
protected void LinkButton1_Click(object sender, EventArgs e)
    {
       Response.Write(string.Format("<script>window.open('{0}','_blank');</script>", "Default3.aspx"));
    }

//------------
//In Default3.aspx

protected void Page_Load(object sender, EventArgs e)
    {
        string path = Server.MapPath("~\\E:\\karthikeyan\\venky\\pdf\\aaaa.PDF");
        WebClient client = new WebClient();
        Byte[] buffer = client.DownloadData(path);
        if (buffer != null)
        {
            Response.ContentType = "application/pdf";
            Response.AddHeader("content-length", buffer.Length.ToString());
            Response.BinaryWrite(buffer);
        }
    }