ASP.NET Tutorial/Development/Image — различия между версиями

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Версия 15:30, 26 мая 2010

Create an image based on query string (C#)

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="ContentAndGraphics" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Untitled Page</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:Label id="Label1" runat="server">Here is some content.</asp:Label>
      <br /><br />
      <asp:Image id="Image1" runat="server" ImageUrl="Default.aspx?Name=Joe%20Brown"></asp:Image>
      <br /><br />
      <asp:Label id="Label2" runat="server">Here is some more content.</asp:Label>
    </div>
    </form>
</body>
</html>

File: Default.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="GraphicalText" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Untitled Page</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    
    </div>
    </form>
</body>
</html>
File: Default.aspx.cs
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Drawing;
public partial class GraphicalText : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (Request.QueryString["Name"] == null)
        {
        }else{
            string name = Request.QueryString["Name"];
            Bitmap image = new Bitmap(300, 50);
            Graphics g = Graphics.FromImage(image);
            g.FillRectangle(Brushes.LightYellow, 0, 0, 300, 50);
            g.DrawRectangle(Pens.Red, 0, 0, 299, 49);
            Font font = new Font("Courier New", 20, FontStyle.Regular);
            g.DrawString(name, font, Brushes.Blue, 10, 0);
            image.Save(Response.OutputStream,System.Drawing.Imaging.ImageFormat.Gif);
            g.Dispose();
            image.Dispose();
        }
    }
}


Generate Image, paint string with font and draw image (C#)

File: Default.aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="GraphicalText" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Untitled Page</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    
    </div>
    </form>
</body>
</html>

File: Default.aspx.cs
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Drawing;
public partial class GraphicalText : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        Bitmap image = new Bitmap(300, 50);
        Graphics g = Graphics.FromImage(image);
        g.FillRectangle(Brushes.LightYellow, 0, 0, 300, 50);
        g.DrawRectangle(Pens.Red, 0, 0, 299, 49);
        Font font = new Font("Alba Super", 20, FontStyle.Regular);
        g.DrawString("This is a test.", font, Brushes.Blue, 10, 0);
        System.Drawing.Image icon = System.Drawing.Image.FromFile(Server.MapPath("your.gif"));
        g.DrawImageUnscaled(icon, 240, 0);
        image.Save(Response.OutputStream,System.Drawing.Imaging.ImageFormat.Gif);
        g.Dispose();
        image.Dispose();
    }
}
Источник — «http://nfex.ru/index.php?title=ASP.NET_Tutorial/Development/Image&oldid=2577»