C# 给图片添加透明水印

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;

namespace PsFilters
{
	/// 

	/// AdjustLevelDlg 的摘要说明。
	/// 

	public class AdjustLevelDlg : System.Windows.Forms.Form
	{
		#region 窗体设计器控件
		private System.Windows.Forms.GroupBox groupBox1;
		private System.Windows.Forms.ComboBox comboBox1;
		private System.Windows.Forms.Label label1;
		private System.Windows.Forms.TextBox textBox1;
		private System.Windows.Forms.TextBox textBox2;
		private System.Windows.Forms.TextBox textBox3;
		private System.Windows.Forms.Label label2;
		private System.Windows.Forms.TextBox textBox4;
		private System.Windows.Forms.TextBox textBox5;
		private System.Windows.Forms.Label label3;
		private System

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----

     目录          0  2008-01-28 12:14  PsFilters

     目录          0  2008-01-28 12:14  PsFilters\Backup

     目录          0  2008-01-28 12:14  PsFilters\Backup\PsFilters

     文件       7354  2006-06-28 11:15  PsFilters\Backup\PsFilters\AdjustLevelDlg.cs

     文件      14280  2006-06-28 11:15  PsFilters\Backup\PsFilters\AdjustLevelDlg.resx

     文件       1078  2006-03-27 20:40  PsFilters\Backup\PsFilters\App.ico

     文件       1859  2006-03-27 20:40  PsFilters\Backup\PsFilters\AssemblyInfo.cs

     文件       7998  2006-06-05 14:00  PsFilters\Backup\PsFilters\DisplaceDlg.cs

     文件      14285  2006-06-05 13:58  PsFilters\Backup\PsFilters\DisplaceDlg.resx

     文件      19583  2007-07-10 03:55  PsFilters\Backup\PsFilters\Form1.cs

     文件      12912  2007-07-10 03:17  PsFilters\Backup\PsFilters\Form1.resx

     文件       6066  2007-07-10 12:14  PsFilters\Backup\PsFilters\NewWaterEffDlg.cs

     文件       9798  2007-07-10 12:14  PsFilters\Backup\PsFilters\NewWaterEffDlg.resx

     文件       7033  2007-07-10 04:10  PsFilters\Backup\PsFilters\PsFilters.csproj

     文件       1803  2007-07-10 12:30  PsFilters\Backup\PsFilters\PsFilters.csproj.user

     文件       4254  2007-07-10 12:26  PsFilters\Backup\PsFilters\RadiusDlg.cs

     文件       8131  2007-07-10 04:17  PsFilters\Backup\PsFilters\RadiusDlg.resx

     文件       5574  2007-07-10 12:28  PsFilters\Backup\PsFilters\WaterEffectDlg.cs

     文件       8714  2007-07-10 12:28  PsFilters\Backup\PsFilters\WaterEffectDlg.resx

     文件       9403  2007-07-10 12:19  PsFilters\Backup\PsFilters\WaterPanel.cs

     文件       6437  2007-07-10 04:26  PsFilters\Backup\PsFilters\WaterPanel.resx

     文件        913  2006-03-27 20:40  PsFilters\Backup\PsFilters.sln

    ..A..H.     18944  2007-07-10 12:30  PsFilters\Backup\PsFilters.suo

     目录          0  2008-01-28 16:07  PsFilters\PsFilters

     文件       7354  2006-06-28 11:15  PsFilters\PsFilters\AdjustLevelDlg.cs

     文件      14280  2006-06-28 11:15  PsFilters\PsFilters\AdjustLevelDlg.resx

     文件       1078  2006-03-27 20:40  PsFilters\PsFilters\App.ico

     文件       1859  2006-03-27 20:40  PsFilters\PsFilters\AssemblyInfo.cs

     目录          0  2007-11-15 21:35  PsFilters\PsFilters\bin

     目录          0  2008-01-28 12:14  PsFilters\PsFilters\bin\Debug

............此处省略47个文件信息