**** Merged from MCS ****
[mono-project.git] / mcs / class / System / System.ComponentModel / CharConverter.cs
bloba36b412796f52a983d2aea09cb6b4010792e7941
1 //
2 // System.ComponentModel.CharConverter
3 //
4 // Author:
5 // Andreas Nahr (ClassDevelopment@A-SoftTech.com)
6 //
7 // (C) 2003 Andreas Nahr
8 //
11 // Permission is hereby granted, free of charge, to any person obtaining
12 // a copy of this software and associated documentation files (the
13 // "Software"), to deal in the Software without restriction, including
14 // without limitation the rights to use, copy, modify, merge, publish,
15 // distribute, sublicense, and/or sell copies of the Software, and to
16 // permit persons to whom the Software is furnished to do so, subject to
17 // the following conditions:
18 //
19 // The above copyright notice and this permission notice shall be
20 // included in all copies or substantial portions of the Software.
21 //
22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
31 using System.Globalization;
33 namespace System.ComponentModel
35 public class CharConverter : TypeConverter
37 public override bool CanConvertFrom (ITypeDescriptorContext context, Type sourceType)
39 if (sourceType == typeof (string))
40 return true;
41 return base.CanConvertFrom (context, sourceType);
44 public override object ConvertFrom (ITypeDescriptorContext context, CultureInfo culture, object value)
46 if (value.GetType() == typeof (string)) {
47 string Test = (String) value;
48 if (Test.Length != 1)
49 // LAMESPEC: MS does throw FormatException here
50 throw new FormatException ("String has to be exactly one char long");
51 return Test[0];
53 return base.ConvertFrom (context, culture, value);
56 public override object ConvertTo (ITypeDescriptorContext context,
57 CultureInfo culture, object value, Type destinationType)
59 if (destinationType == typeof (string))
60 if (value != null && value is char)
61 return new string ((char) value, 1);
63 return base.ConvertTo (context, culture, value, destinationType);