2 // System.ComponentModel.CharConverter
5 // Andreas Nahr (ClassDevelopment@A-SoftTech.com)
6 // Ivan N. Zlatev (contact@i-nz.net)
8 // (C) 2003 Andreas Nahr
9 // (C) 2008 Novell, Inc. (http://www.novell.com)
13 // Permission is hereby granted, free of charge, to any person obtaining
14 // a copy of this software and associated documentation files (the
15 // "Software"), to deal in the Software without restriction, including
16 // without limitation the rights to use, copy, modify, merge, publish,
17 // distribute, sublicense, and/or sell copies of the Software, and to
18 // permit persons to whom the Software is furnished to do so, subject to
19 // the following conditions:
21 // The above copyright notice and this permission notice shall be
22 // included in all copies or substantial portions of the Software.
24 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
28 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
29 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
30 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
33 using System
.Globalization
;
35 namespace System
.ComponentModel
37 public class CharConverter
: TypeConverter
39 public override bool CanConvertFrom (ITypeDescriptorContext context
, Type sourceType
)
41 if (sourceType
== typeof (string))
43 return base.CanConvertFrom (context
, sourceType
);
46 public override object ConvertFrom (ITypeDescriptorContext context
, CultureInfo culture
, object value)
48 string char_string
= value as string;
49 if (char_string
!= null) {
50 if (char_string
.Length
> 1)
51 char_string
= char_string
.Trim ();
52 if (char_string
.Length
> 1)
53 throw new FormatException (string.Format (
54 "String {0} is not a valid Char: " +
55 "it has to be less than or equal to " +
56 "one char long.", char_string
));
57 if (char_string
.Length
== 0)
59 return char_string
[0];
61 return base.ConvertFrom (context
, culture
, value);
64 public override object ConvertTo (ITypeDescriptorContext context
,
65 CultureInfo culture
, object value, Type destinationType
)
67 if (destinationType
== typeof (string)) {
68 if ((value != null) && (value is char)) {
69 char c
= (char) value;
73 return new string (c
, 1);
77 return base.ConvertTo (context
, culture
, value, destinationType
);