app.config读取自定义配置的值的属性

假设有如下配置:

<appSettings>
<add key="A" value="config with A"/>
<add key="B" value="config with B"/>
</appSettings>

using System.Configuration;

[A] 方法

string strTest = ConfigurationSettings.AppSettings["A"]; // get A 's value

[B] 方法

AppSettingsReader appReader = new AppSettingsReader();
string strTest = appReader.GetValue(strKey,typeof(string)).ToString();

e.g.

private string GetConfig(string strKey)
{
AppSettingsReader appReader = new AppSettingsReader();
string strReturn;
try
{
strReturn = appReader.GetValue(strKey,typeof(string)).ToString();
}
catch(Exception ex)
{
strReturn = ex.Message.ToString();
}
finally
{
appReader = null;

}
return strReturn;
}