How Can I Download File On Page Load Asp.Net

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C#

ASP.NET

I Have A page Mobileview.aspx and this page has an Iframe and bb.aspx page is opening in this iframe . bb.aspx has a hyperlink like

<asp:HyperLink id="hyperlink1"
                  NavigateUrl="download.aspx?path=D:/folder/file.jpg"
                  Text="Click here to download image"
                  Target="_blank"
                  runat="server"/>

when i click on this hyperlink then download.aspx does open in new tab and i have written code for download file in page load event. this is working fine in all desktop browsers but when i open bb.aspx page in android or Iphone browsers then new tab open and wait for file download then it will give me connection time out . the image size hardly more than 100 kb. can anybody tell me what should i do for this.But in desktop browsers it will download file with out any issue