www.pudn.com > Crawler_bemjh.rar > Settings.cs

using System; 
using System.IO; 
using System.Xml; 
using System.Windows.Forms; 
 
 
namespace CrawlerLib 
{ 
	/// 
 
	///  设置窗口，用来设置选项，并保存结果。 
	///  1.设置内容包括： 
	///      MIMI type； 输出项；连接项及高级项 
	///  2.写入的值保存在：注册表 
	///  2.1 具体在：KEY_CURRENT_USER==>Software==>Crawler==>Crawler==>1.0.0.0 
	///   
	/// 
 
	public class Settings 
	{ 
		public string this[string name] 
		{ 
			//取值 
			get 
			{ 
				try 
				{ 
					return (string)Application.UserAppDataRegistry.GetValue(name); 
				} 
				catch(Exception) 
				{ 
					return null; 
				} 
			} 
			//设置 
			set 
			{ 
				try 
				{ 
					Application.UserAppDataRegistry.SetValue(name, value); 
				} 
				catch(Exception) 
				{ 
				} 
			} 
		} 
 
		 
		// 取值函数 
		public static string GetValue(string name) 
		{ 
			return (string)Application.UserAppDataRegistry.GetValue(name); 
		} 
		public static string GetValue(string name, string defaultValue) 
		{ 
			return (string)Application.UserAppDataRegistry.GetValue(name, defaultValue); 
		} 
		public static int GetValue(string name, int defaultValue) 
		{ 
			string str = GetValue(name, defaultValue.ToString()); 
			if(str != "") 
				return int.Parse(str); 
			return -1; 
		} 
		public static bool GetValue(string name, bool defaultValue) 
		{ 
			return GetValue(name, defaultValue.ToString()).ToLower() == "true"; 
		} 
 
		public static void GetValue(Form form) 
		{ 
			Control ctrl = null; 
			while((ctrl = form.GetNextControl(ctrl, true)) != null) 
				Settings.GetValue(ctrl); 
		} 
		public static void GetValue(Control ctrl) 
		{ 
			string Name = ctrl.FindForm().Name+'-'+ctrl.Name; 
			if(ctrl.Tag != null && ctrl.Tag.ToString().Trim().Length > 0) 
				switch(ctrl.GetType().Name) 
				{ 
					case "TextBox": 
						ctrl.Text = Settings.GetValue((string)ctrl.Tag, ctrl.Text); 
						break; 
					case "CheckBox": 
						CheckBox check = (CheckBox)ctrl; 
						check.Checked = Settings.GetValue((string)ctrl.Tag, check.Checked); 
						break; 
					case "RadioButton": 
						RadioButton radio = (RadioButton)ctrl; 
						radio.Checked = Settings.GetValue((string)ctrl.Tag, radio.Checked); 
						break; 
					case "NumericUpDown": 
						NumericUpDown numeric = (NumericUpDown)ctrl; 
						numeric.Value = decimal.Parse(Settings.GetValue((string)ctrl.Tag, numeric.Value.ToString())); 
						break; 
					case "TabControl": 
						TabControl tab = (TabControl)ctrl; 
						tab.SelectedIndex = int.Parse(Settings.GetValue((string)ctrl.Tag, tab.SelectedIndex.ToString())); 
						break; 
					case "ComboBox": 
						ComboBox combo = (ComboBox)ctrl; 
						try 
						{ 
							XmlNode element = GetCtrlNode(ctrl); 
							if(element != null && element.ChildNodes.Count > 0) 
							{ 
								combo.Items.Clear(); 
								foreach(XmlNode node in element.ChildNodes) 
									combo.Items.Add(node.InnerText); 
							} 
						} 
						catch(XmlException) 
						{ 
						} 
						combo.Text = Settings.GetValue(Name, combo.Text); 
						break; 
					case "ListView": 
						ListView list = (ListView)ctrl; 
						try 
						{ 
							XmlNode element = GetCtrlNode(ctrl); 
							if(element != null && element.ChildNodes.Count > 0) 
							{ 
								list.Items.Clear(); 
								foreach(XmlNode node in element.ChildNodes) 
								{ 
									string[] items = node.InnerText.Split('\t'); 
									ListViewItem viewItem = list.Items.Add(items[0]); 
									for(int nIndex = 1; nIndex < items.Length; nIndex++) 
										viewItem.SubItems.Add(items[nIndex]); 
									if(list.CheckBoxes == true) 
									{ 
										XmlAttribute attribute  = node.Attributes["Checked"]; 
										if(attribute != null) 
											viewItem.Checked = attribute.Value.ToLower() == "true"; 
									} 
								} 
							} 
						} 
						catch(XmlException) 
						{ 
						} 
						break; 
				} 
		} 
		 
		 
		// 设置值函数 
		public static void SetValue(string name, string value) 
		{ 
			Application.UserAppDataRegistry.SetValue(name, value); 
		} 
		public static void SetValue(string name, bool value) 
		{ 
			SetValue(name, value.ToString()); 
		} 
 
		public static void SetValue(Form form) 
		{ 
			Control ctrl = null; 
			while((ctrl = form.GetNextControl(ctrl, true)) != null) 
				Settings.SetValue(ctrl); 
		} 
		public static void SetValue(Control ctrl) 
		{ 
			string Name = ctrl.FindForm().Name+'-'+ctrl.Name; 
			if(ctrl.Tag != null && ctrl.Tag.ToString().Trim().Length > 0) 
				switch(ctrl.GetType().Name) 
				{ 
					case "TextBox": 
						Settings.SetValue((string)ctrl.Tag, ctrl.Text); 
						break; 
					case "CheckBox": 
						CheckBox check = (CheckBox)ctrl; 
						Settings.SetValue((string)ctrl.Tag, check.Checked); 
						break; 
					case "RadioButton": 
						RadioButton radio = (RadioButton)ctrl; 
						Settings.SetValue((string)ctrl.Tag, radio.Checked); 
						break; 
					case "NumericUpDown": 
						NumericUpDown numeric = (NumericUpDown)ctrl; 
						Settings.SetValue((string)ctrl.Tag, numeric.Value.ToString()); 
						break; 
					case "TabControl": 
						TabControl tab = (TabControl)ctrl; 
						Settings.SetValue((string)ctrl.Tag, tab.SelectedIndex.ToString()); 
						break; 
					case "ComboBox": 
						ComboBox combo = (ComboBox)ctrl; 
						try 
						{ 
							string fileName = null; 
							XmlDocument doc = null; 
							XmlNode element = GetCtrlNode(ctrl, ref fileName, ref doc); 
							element.RemoveAll(); 
							foreach (string item in combo.Items) 
							{ 
								XmlNode node = doc.CreateNode(XmlNodeType.Element, "Item", ""); 
								node.InnerText = item; 
								element.AppendChild(node); 
							} 
							doc.Save(fileName); 
						} 
						catch(XmlException) 
						{ 
						} 
						Settings.SetValue(Name, combo.Text); 
						break; 
					case "ListView": 
						ListView list = (ListView)ctrl; 
						try 
						{ 
							string fileName = null; 
							XmlDocument doc = null; 
							XmlNode element = GetCtrlNode(ctrl, ref fileName, ref doc); 
							element.RemoveAll(); 
							foreach (ListViewItem viewItem in list.Items) 
							{ 
								XmlNode node = doc.CreateNode(XmlNodeType.Element, "Item", ""); 
								if(list.CheckBoxes == true) 
								{ 
									XmlAttribute attribute = doc.CreateAttribute("Checked"); 
									attribute.Value = viewItem.Checked.ToString(); 
									node.Attributes.Append(attribute); 
								} 
								string InnerText = ""; 
								foreach(ListViewItem.ListViewSubItem subItem in viewItem.SubItems) 
									InnerText += subItem.Text+'\t'; 
								node.InnerText = InnerText.TrimEnd('\t'); 
								element.AppendChild(node); 
							} 
							doc.Save(fileName); 
						} 
						catch(XmlException) 
						{ 
						} 
						break; 
				} 
		} 
		 
		 
		//从XML文件中读取预设置的值 
		static XmlNode GetCtrlNode(Control ctrl) 
		{ 
			string fileName = null; 
			XmlDocument doc = null; 
			return GetCtrlNode(ctrl, ref fileName, ref doc); 
		} 
 
		static XmlNode GetCtrlNode(Control ctrl, ref string fileName, ref XmlDocument doc) 
		{ 
			fileName = Application.StartupPath+'\\'+(string)ctrl.Tag+".xml"; 
			doc = new XmlDocument(); 
			XmlNode node = null; 
			string Name = ctrl.FindForm().Name+'-'+ctrl.Name; 
			if(File.Exists(fileName)) 
			{ 
				doc.Load(fileName); 
				node = doc.DocumentElement.SelectSingleNode(Name); 
			} 
			else 
				doc.LoadXml("\r\n"); 
			if(node == null) 
			{ 
				node = doc.CreateNode(XmlNodeType.Element, Name, ""); 
				doc.DocumentElement.AppendChild(node); 
			} 
			return node; 
		} 
 
 
	} 
}