dotnet C# 将网页内容存为图片

///////////调用方法,执行时可能会遇到权限设置的问题
GetSnapImage sni = new GetSnapImage();
sni.URL = ul;
sni.W = 660;
sni.H = 900;
sni.Run();
System.Drawing.Bitmap bitmap = sni.bmp;
if (bitmap != null)
{
    bitmap.Save(System.Web.HttpContext.Current.Response.OutputStream, ImageFormat.Jpeg);
}



// GetSnap.cs /////////////////////////////////////////////////////////////////

using System;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Drawing.Imaging;
using System.Windows.Forms;
using System.Threading;
/// <summary>
/// GetSnap 的摘要说明
/// </summary>
/// 

public class GetSnapImage
{

    private string _url = "";
    private string _imgName = DateTime.Now.ToString("HHmmssffff") + ".jpg";
    private int _w = 0;
    private int _h = 0;
    private bool _saveas = false;
    private System.Drawing.Bitmap _bmp = null;
    /// <summary>
    /// 网址
    /// </summary>
    public string URL
    {
        get { return _url; }
        set { _url = value; }
    }
    /// <summary>
    /// 保存图片的地址
    /// </summary>
    public string imgName
    {
        get { return _imgName; }
        set { _imgName = value; }
    }
    /// <summary>
    /// 预定图片宽度
    /// </summary>
    public int W
    {
        set { _w = value; }
        get { return _w; }
    }