C#操作配置文件App.Config简介

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public class ConfigHelper

{

/// <summary>

/// 根据键值获取配置文件

/// </summary>

/// <param name="key">键值</param>

/// <returns></returns>

public static string GetConfig(string key)

{

string val = string.Empty;

if (ConfigurationManager.AppSettings.AllKeys.Contains(key))

val = ConfigurationManager.AppSettings[key];

return val;

}

/// <summary>

/// 获取所有配置文件

/// </summary>

/// <returns></returns>

public static Dictionary<string, string> GetConfig()

{

Dictionary<string, string> dict = new Dictionary<string, string>();

foreach (string key in ConfigurationManager.AppSettings.AllKeys)

dict.Add(key, ConfigurationManager.AppSettings[key]);

return dict;

}

/// <summary>

/// 根据键值获取配置文件

/// </summary>

/// <param name="key">键值</param>

/// <param name="defaultValue">默认值</param>

/// <returns></returns>

public static string GetConfig(string key, string defaultValue)

{

string val = defaultValue;

if (ConfigurationManager.AppSettings.AllKeys.Contains(key))

val = ConfigurationManager.AppSettings[key];

if (val == null)

val = defaultValue;

return val;

}

/// <summary>

/// 写配置文件,如果节点不存在则自动创建

/// </summary>

/// <param name="key">键值</param>

/// <param name="value">值</param>

/// <returns></returns>

public static bool SetConfig(string key, string value)

{

try

{

Configuration conf = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);

if (!conf.AppSettings.Settings.AllKeys.Contains(key))

conf.AppSettings.Settings.Add(key, value);

else

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

conf.Save();

return true;

}

catch { return false; }

}

/// <summary>

/// 写配置文件(用键值创建),如果节点不存在则自动创建

/// </summary>

/// <param name="dict">键值集合</param>

/// <returns></returns>

public static bool SetConfig(Dictionary<string, string> dict)

{

try

{

if (dict == null || dict.Count == 0)

return false;

Configuration conf = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);

foreach (string key in dict.Keys)

{

if (!conf.AppSettings.Settings.AllKeys.Contains(key))

conf.AppSettings.Settings.Add(key, dict[key]);

else

conf.AppSettings.Settings[key].Value = dict[key];

}

conf.Save();

return true;

}

catch { return false; }

}

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