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Settings.cs

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using System;

using System.Configuration;

using System.Linq;

namespace SettingsUI

{

public class Settings

{

private readonly Configuration _config;

public Settings()

{

var fileMap = new ExeConfigurationFileMap();

fileMap.ExeConfigFilename = @"WowPacketParser.exe.config";

_config = ConfigurationManager.OpenMappedExeConfiguration(fileMap,

ConfigurationUserLevel.None);

if (!_config.HasFile)

throw new ConfigurationErrorsException("Config file not found.");

}

/// <summary>

/// Changes configuration modifications to file

/// </summary>

public void Save()

{

_config.Save(ConfigurationSaveMode.Full);

}

/// <summary>

/// Returns the value associated with the given key or

/// returns the passed value if key does not exist.

/// </summary>

/// <typeparam name="T">Type of default value and return type</typeparam>

/// <param name="key">Key</param>

/// <param name="defaultVal">Return value if key does not exist</param>

/// <param name="createVal">If the key does not exist, add the key-default value pair to configuration</param>

/// <returns></returns>

public T GetSetting<T>(string key, T defaultVal, bool createVal = false)

{

var pair = _config.AppSettings.Settings[key];

if (pair == null)

{

if (createVal)

_config.AppSettings.Settings.Add(

new KeyValueConfigurationElement(key, defaultVal.ToString()));

return defaultVal;

}

if (typeof(T).BaseType == typeof(Enum))

return (T) Enum.Parse(typeof (T), pair.Value, true);

return (T) Convert.ChangeType(pair.Value, typeof (T));

}

/// <summary>

/// Modifies the value of an existing key or creates a new one.

/// </summary>

/// <param name="key">Key</param>

/// <param name="value">Value</param>

public void SetSetting(string key, string value)

{

if (_config.AppSettings.Settings.AllKeys.Contains(key))

_config.AppSettings.Settings[key].Value = value;

else

_config.AppSettings.Settings.Add(new KeyValueConfigurationElement(key, value));

}

/// <summary>

/// Removes a setting from the configuration.

/// Does nothing if key does not exist.

/// </summary>

/// <param name="key">Key</param>

public void RemoveSetting(string key)

{

_config.AppSettings.Settings.Remove(key);

}

}

}