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//
// System.Configuration.AppSettingsReader
//
// Authors:
// Gonzalo Paniagua Javier (gonzalo@ximian.com)
//
// (C) 2002 Ximian, Inc (http://www.ximian.com)
//
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System.Reflection;
using System.Collections.Specialized;
namespace System.Configuration
{
public class AppSettingsReader
{
NameValueCollection appSettings;
public AppSettingsReader ()
{
appSettings = ConfigurationSettings.AppSettings;
}
public object GetValue (string key, Type type)
{
if (key == null)
throw new ArgumentNullException ("key");
if (type == null)
throw new ArgumentNullException ("type");
string value = appSettings [key];
if (value == null)
throw new InvalidOperationException ("'" + key + "' could not be found.");
if (type == typeof (string))
return value;
MethodInfo parse = type.GetMethod ("Parse", new Type [] {typeof (string)});
if (parse == null)
throw new InvalidOperationException ("Type " + type + " does not have a Parse method");
object result = null;
try {
result = parse.Invoke (null, new object [] {value});
} catch (Exception e) {
throw new InvalidOperationException ("Parse error.", e);
}
return result;
}
}
}
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