Asp.net(C#)给图片加上水印效果的类

using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using System.Drawing;

namespace QianBianWanHua_Lib
...{
    /**//// <summary>
    /// 功能说明:给图片加水印,分为文字和图片两种
    /// 程序员：段小勇
    /// 日期：2007-11-12
    /// </summary>
    public class PicContron
    ...{
        public PicContron()
        ...{

        }

        /**//// <summary>
        /// 给图片加上文字水印,位置在图片的右下角
        /// </summary>
        /// <param name="PicPath">图片路径</param>
        /// <param name="Text">在图片上的文字</param>
        public static void AddTextToPic(string PicPath,string Text)
        ...{
            System.Drawing.Image image = System.Drawing.Image.FromFile(PicPath);
            Graphics g = Graphics.FromImage(image);
            int _intX = 0;
            int _intY = image.Height;
            try
            ...{
                _intX = image.Width - 180;
            }
            catch
            ...{
                _intX = 0;
            }
            try
            ...{
                _intY = image.Height - 60;
            }
            catch
            ...{
                _intY = 0;
            }
            g.DrawImage(image, 0, 0, image.Width, image.Height);
            Font f = new Font("Verdana", 20);
            Brush b = new SolidBrush(Color.Red);            
            g.DrawString(Text, f, b, _intX, _intY);
            g.Dispose();
            image.Save(PicPath+"t");
            image.Dispose();
            if (File.Exists(PicPath))
            ...{
                File.Delete(PicPath);
            }
            if (File.Exists(PicPath+"t"))
            ...{
                File.Move(PicPath + "t", PicPath);
            }
        }

        /**//// <summary>
        /// 
        /// </summary>
        /// <param name="PicPath"></param>
        /// <param name="ImagePic"></param>
        public static void AddImageToPic(string PicPath, string ImagePic)
        ...{
            System.Drawing.Image image = System.Drawing.Image.FromFile(PicPath);
            System.Drawing.Image copyImage = System.Drawing.Image.FromFile(ImagePic);
            int _intX = 0;
            int _intY = image.Height;
            try
            ...{
                _intX = image.Width - 180;
            }
            catch
            ...{
                _intX = 0;
            }
            try
            ...{
                _intY = image.Height - 60;
            }
            catch
            ...{
                _intY = 0;
            }
            Graphics g = Graphics.FromImage(image);
            g.DrawImage(copyImage, new Rectangle(image.Width - copyImage.Width, image.Height - copyImage.Height, copyImage.Width, copyImage.Height), 0, 0, copyImage.Width, copyImage.Height, GraphicsUnit.Pixel);
            g.Dispose();
            image.Save(PicPath + "t");
            image.Dispose();
            if (File.Exists(PicPath))
            ...{
                File.Delete(PicPath);
            }
            if (File.Exists(PicPath + "t"))
            ...{
                File.Move(PicPath + "t", PicPath);
            }
        }
    }
}