How to rotate an image in asp.net c# programmatically

Rotate an image
HowToRotateAnImage.aspx

<%@ Page Language="C#" AutoEventWireup="true" %>

<%@ Import Namespace="System.Drawing" %>
<%@ Import Namespace="System.Drawing.Drawing2D" %>
<%@ Import Namespace="System.Drawing.Imaging" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
    protected void Button1_Click(object sender, System.EventArgs e)
    {
        String path = Server.MapPath("~/Image/bird.jpg");
        System.Drawing.Image img = System.Drawing.Image.FromFile(path);
        img.RotateFlip(RotateFlipType.Rotate180FlipNone);
        img.Save(path);
    }
</script>

<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
    <title>How to rotate an image in asp.net programmatically</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <h2 style="color:DodgerBlue; font-style:italic;">
            How to rotate an image in asp.net programmatically
        </h2>
        <hr width="550" align="left" color="DeepSkyBlue" />
        <asp:Image
             ID="Image1"
             runat="server"
             ImageUrl="~/Image/bird.jpg"
             Height="250"
             BorderStyle="Dotted"
             BorderColor="SeaGreen"
             BorderWidth="2"
             />
        <br />
        <asp:Button 
            ID="Button1"
            runat="server"
            OnClick="Button1_Click"
            Text="Rotate Image: Rotate90FlipY"
            Height="45"
            Font-Bold="true"
            ForeColor="DodgerBlue"
            />
    </div>
    </form>
</body>
</html>
More asp.net examples