使用vb.net在asp.net中进行文件复制

Question

I am Using a Application server for calling Oracle Reports and i have url to call the report when report is called the server convert it into pdf but when report contain large data it got a lot of time to load.I want to do in asp.net that when i call the report url it open the pdf file and copies it into the root of my web folder and next time when i call the url it open the pdf file and on back end loads the

Sir I want to call function on hyerplink in new tab please tell me solution for that

Sir According to My question i want to use multithreading to call one file from root directory and other to download on backend

Answer 1

You may use WebClient class.

 WebClient client = new WebClient();
 client.DownloadFile(Uri, fileName);

VB

 Dim client As New WebClient
 client.DownloadFile(Uri, fileName)

EDIT:

The first argument specify the location of source file. The second argument is a path of destination file. Use Server.MapPath() method to get absolute path if you save it at root of web-app.

Markup :

<form id="form1" runat="server">
    <div>
        <asp:Button ID="Button1" runat="server" Text="Button" />
        <asp:HyperLink ID="HyperLink1" Visible="false" Target="_blank" runat="server">HyperLink</asp:HyperLink>
    </div>
</form>

Code:

Protected Sub Button1_Click(sender As Object, e As System.EventArgs) Handles Button1.Click
        Dim client As New WebClient
        Dim muri As New Uri("http://your_url")
        Dim destPath = Server.MapPath("~/file.pdf")
        client.DownloadFile(muri, destPath)
        HyperLink1.Visible = True
        HyperLink1.NavigateUrl = "~/file.pdf"
        HyperLink1.Text = "Open"
    End Sub