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//
// System.ComponentModel.GuidConverter
//
// Author:
// Andreas Nahr (ClassDevelopment@A-SoftTech.com)
//
// (C) 2003 Andreas Nahr
//
//
// 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.Globalization;
using System.Reflection;
using System.ComponentModel.Design.Serialization;
namespace System.ComponentModel
{
public class GuidConverter : TypeConverter
{
public GuidConverter()
{
}
public override bool CanConvertFrom (ITypeDescriptorContext context, Type sourceType)
{
if (sourceType == typeof (string))
return true;
return base.CanConvertFrom (context, sourceType);
}
public override bool CanConvertTo (ITypeDescriptorContext context, Type destinationType)
{
if (destinationType == typeof (string))
return true;
if (destinationType == typeof (InstanceDescriptor))
return true;
return base.CanConvertTo (context, destinationType);
}
public override object ConvertFrom (ITypeDescriptorContext context,
CultureInfo culture, object value)
{
if (value.GetType() == typeof (string)) {
string GuidString = (string) value;
try {
return new Guid (GuidString);
} catch {
throw new FormatException (GuidString + "is not a valid GUID.");
}
}
return base.ConvertFrom (context, culture, value);
}
public override object ConvertTo (ITypeDescriptorContext context,
CultureInfo culture, object value, Type destinationType)
{
if (destinationType == typeof (string) && value != null &&value.GetType() == typeof (Guid))
// LAMESPEC MS seems to always parse "D" type
return ((Guid) value).ToString("D");
if (destinationType == typeof (InstanceDescriptor) && value is Guid) {
Guid cval = (Guid) value;
ConstructorInfo ctor = typeof(Guid).GetConstructor (new Type[] {typeof(string)});
return new InstanceDescriptor (ctor, new object[] {cval.ToString("D")});
}
return base.ConvertTo (context, culture, value, destinationType);
}
}
}
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