C# 读取,删除,增加,修改app.config配置文件信息
string file = Application.ExecutablePath;
Configuration config = ConfigurationManager.OpenExeConfiguration(file);
config.AppSettings.Settings.Add("test", "1");
config.Save(ConfigurationSaveMode.Modified);
ConfigurationManager.RefreshSection("appSettings");
多次添加结果:
<configuration>
<appSettings>
<add key="test" value="1,1,1" />
</appSettings>
</configuration>
2018-03-01 17:10 罗分明网络博客 C#基础 3627 0
20180509更新，新增 --添加，修改，删除功能
以下是 app.config文件里面代码
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<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<appSettings>
<add key="lqwvje" value="罗分明"/>
</appSettings>
</configuration>
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以下是读取配置文件信息方法
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/// <summary>
/// 修改和添加AppSettings中配置 如果相应的Key存在则修改 如不存在则添加
/// </summary>
/// <param name="key">key值</param>
/// <param name="value">相应值</param>
public static bool SetConfigValue(string key, string value)
{//转载请保留 http://www.luofenming.com/show.aspx?id=ART2018030100002
try
{
Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
if (config.AppSettings.Settings[key] != null)
{
config.AppSettings.Settings[key].Value = value;
}
else
{
config.AppSettings.Settings.Add(key, value);
}
config.Save(ConfigurationSaveMode.Modified);
ConfigurationManager.RefreshSection("appSettings");
return true;
}
catch
{
return false;
}
}
/// <summary>
/// 删除
/// </summary>
/// <param name="keyName"></param>
public void removeItem(string keyName)
{
//删除配置文件键为keyName的项
Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
config.AppSettings.Settings.Remove(keyName);
config.Save(ConfigurationSaveMode.Modified);
ConfigurationManager.RefreshSection("appSettings");
}
/// <summary>
/// 查看相应Key的Value
/// </summary>
/// <param name="keyName"></param>
/// <returns></returns>
public string valueItem(string keyName)
{
//返回配置文件中键为keyName的项的值
return ConfigurationManager.AppSettings[keyName];
}
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注意：修改和删除不是在APP.Config里面修改，改是复制在另外一个文件里面如下图
