How to open File Dialog Box in ASP.Net

This way you can upload file in Asp.net using FileUpload Control

 C#:

protected void OpenTextFile(object sender, EventArgs e)
    {
        if (this.fuTextFile.HasFile)
        {
            this.fuTextFile.SaveAs(Server.MapPath("~/Text/" + fuTextFile.FileName));
        }
    }

HTML:

 <form id="form1" runat="server">
    <div>
        <asp:FileUpload ID="fuTextFile" runat="server" />
        <asp:Button Text="Open" OnClick="OpenTextFile" runat="server" />
    </div>
    </form>