无法关闭telerik Rad Window

Question

只有Safari ，当点击按钮rad窗口打开，我试图关闭窗口，但只是关闭rad窗口的顶部栏但stil身体仍然是.i假设它发生的原因Response.WriteFile（）; 请提出一些好的解决方案。

protected void btnReset_Click(object sender, EventArgs e)
    {         
      radwindow.NavigateUrl="DisplayImage.aspx?physicalPathToFile="docpath;
      radwindow.VisibleOnPageLoad = true; 
    }

请考虑以下代码

<telerik:RadWindow ID="radwindow" runat="server" VisibleOnPageLoad="false" Width="1000px" Height="1000px"
Title="Open Document" Modal="true" BackColor="#DADADA" VisibleStatusbar="false" Behaviors="Close,Move,Minimize,Maximize">

UserProfile.aspx.cs

  string physicalPathToFile=Request["physicalPathToFile"];

                //For pdf document --application/pdf
                if (Path.GetExtension(physicalPathToFile).Equals(".pdf", StringComparison.CurrentCultureIgnoreCase))
                {
                    WriteFile(physicalPathToFile, "application/pdf", Context.Response);
                }


    private void WriteFile(string physicalPathToFile, string contentType, HttpResponse response)
    {
        try
        {
            response.Buffer = true;
            response.Clear();
            response.ContentType = contentType == "" ? response.ContentType : contentType;
            response.WriteFile(physicalPathToFile);
            response.Flush();
            response.End();
        }
        catch (Exception ex)
        {
            throw ex;
        }
    }