C# 读取webconfig配置文件Appseting key值的方法

程序中为了保持灵活性，将一些参数写到配置文件中，方便修改和做到可支持配置。相应的我们必须从配置文件读取相应的配置信息，以下为读取配置文件appseting相应配置key的通用方法，陪讲一些通用的方法写成一个通用的类或者做成一个通用common的dll，方便开发很方便的调用。

public static string GetConfigString(string key)
{
	string cacheKey = "AppSettings-" + key;
	object obj = DataCache.GetCache(cacheKey);
	if (obj == null)
	{
		try
		{
			obj = ConfigurationManager.AppSettings[key];
			if (obj != null)
			{
				DataCache.SetCache(cacheKey, obj, DateTime.Now.AddMinutes(180.0), TimeSpan.Zero);
			}
		}
		catch
		{
		}
	}
	return obj.ToString();
}

public static int GetConfigInt(string key)
{
	int result = 0;
	string configString = ConfigHelper.GetConfigString(key);
	if (configString != null && string.Empty != configString)
	{
		try
		{
			result = int.Parse(configString);
		}
		catch (FormatException)
		{
		}
	}
	return result;
}

public static decimal GetConfigDecimal(string key)
{
	decimal result = 0m;
	string configString = ConfigHelper.GetConfigString(key);
	if (configString != null && string.Empty != configString)
	{
		try
		{
			result = decimal.Parse(configString);
		}
		catch (FormatException)
		{
		}
	}
	return result;
}

public static bool GetConfigBool(string key)
{
	bool result = false;
	string configString = ConfigHelper.GetConfigString(key);
	if (configString != null && string.Empty != configString)
	{
		try
		{
			result = bool.Parse(configString);
		}
		catch (FormatException)
		{
		}
	}
	return result;
}

public sealed class ConfigHelper
	{
		public static string GetConfigString(string key)
		{
			string cacheKey = "AppSettings-" + key;
			object obj = DataCache.GetCache(cacheKey);
			if (obj == null)
			{
				try
				{
					obj = ConfigurationManager.AppSettings[key];
					if (obj != null)
					{
						DataCache.SetCache(cacheKey, obj, DateTime.Now.AddMinutes(180.0), TimeSpan.Zero);
					}
				}
				catch
				{
				}
			}
			return obj.ToString();
		}
		public static bool GetConfigBool(string key)
		{
			bool result = false;
			string configString = ConfigHelper.GetConfigString(key);
			if (configString != null && string.Empty != configString)
			{
				try
				{
					result = bool.Parse(configString);
				}
				catch (FormatException)
				{
				}
			}
			return result;
		}
		public static decimal GetConfigDecimal(string key)
		{
			decimal result = 0m;
			string configString = ConfigHelper.GetConfigString(key);
			if (configString != null && string.Empty != configString)
			{
				try
				{
					result = decimal.Parse(configString);
				}
				catch (FormatException)
				{
				}
			}
			return result;
		}
		public static int GetConfigInt(string key)
		{
			int result = 0;
			string configString = ConfigHelper.GetConfigString(key);
			if (configString != null && string.Empty != configString)
			{
				try
				{
					result = int.Parse(configString);
				}
				catch (FormatException)
				{
				}
			}
			return result;
		}
	}