How To Get User's IP Address in Asp.Net using C#, VB.Net

In this tutorial i am going to share with you how to get users / client ip address in Asp.Net using both C# and VB.Net or also retrieving user's ip address in asp.net using c# and vb.net or how to get ip addres of visitors machine / system in asp.net using c# and vb.net with example.

So, let's take one example for demonstration purpose.

To get ip address of user/client/visitor's machine/system you need to create one web application and also need to create one web page within website directory and write following aspx code in that created web page.

aspx code:

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <b>Your Ip Address is :</b>
        <asp:Label ID="lbl_ip" ForeColor="Blue" Font-Bold="true" Font-Size="XX-Large" runat="server"></asp:Label>
        <br />
        <br />
        <asp:Button ID="btn_Getip" runat="server" Text="Get IP Address" OnClick="btn_Getip_Click" />
    </div>
    </form>
</body>
</html>

C# Code to Get User's IP Address

protected void btn_Getip_Click(object sender, EventArgs e)
   {
       string IPAddress = string.Empty;
       IPAddress = Request.ServerVariables["HTTP_X_FORWARDED_FOR"];
       if (string.IsNullOrEmpty(IPAddress))
           IPAddress = Request.ServerVariables["REMOTE_ADDR"];
       lbl_ip.Text = IPAddress;
   }

Vb.Net Code to Get User's IP Address

Protected Sub btn_Getip_Click(sender As Object, e As EventArgs) Handles btn_Getip.Click
        Dim IPAddress As String = String.Empty
        IPAddress = Request.ServerVariables("HTTP_X_FORWARDED_FOR")
        If String.IsNullOrEmpty(IPAddress) Then
            IPAddress = Request.ServerVariables("REMOTE_ADDR")
        End If
        lbl_ip.Text = IPAddress
    End Sub

Demo:

About Nikunj Satasiya

I am a passionate programmer and a Software Engineer who love developing applications in Microsoft Technologies, blogging and other related technologies like Asp.Net, VB.Net, SEO, Sql Server,My SQL,Asp.Net-MVC, LINQ, C#.Net, Stored Procedures, Ajax, JavaScript, JQuery, xml etc.

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