Download any file from URL in ASP.Net using C# and VB.Net

Hi Nauna,

 Please refer below Sample.

You can download PDF, PNG, JPEG etc.

HTML

<asp:Button Text="Download" OnClick="DownLoad" runat="server" />

Code

 C#

protected void DownLoad(object sender, EventArgs e)
{
    System.Net.WebClient webClient = new System.Net.WebClient();
    string url = "http://www.africau.edu/images/default/sample.pdf";
    byte[] bytes = webClient.DownloadData(url);
    Response.ContentType = ContentType;
    Response.AppendHeader("Content-Disposition", "attachment; filename=" + System.IO.Path.GetFileName(url));
    Response.BinaryWrite(bytes);
    Response.End();
}

VB.Net

Protected Sub DownLoad(ByVal sender As Object, ByVal e As EventArgs)
    Dim webClient As System.Net.WebClient = New System.Net.WebClient()
    Dim url As String = "http://www.africau.edu/images/default/sample.pdf"
    Dim bytes As Byte() = webClient.DownloadData(url)
    Response.ContentType = ContentType
    Response.AppendHeader("Content-Disposition", "attachment; filename=" & System.IO.Path.GetFileName(url))
    Response.BinaryWrite(bytes)
    Response.End()
End Sub

Screenshot