2 // System.ComponentModel.DateTimeConverter
5 // Martin Willemoes Hansen (mwh@sysrq.dk)
6 // Andreas Nahr (ClassDevelopment@A-SoftTech.com)
8 // (C) 2003 Martin Willemoes Hansen
9 // (C) 2003 Andreas Nahr
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;
34 using System.Reflection;
35 using System.ComponentModel.Design.Serialization;
37 namespace System.ComponentModel
39 public class DateTimeConverter : TypeConverter
42 public DateTimeConverter()
46 public override bool CanConvertFrom (ITypeDescriptorContext context, Type sourceType)
48 if (sourceType == typeof (string))
50 return base.CanConvertFrom (context, sourceType);
53 public override bool CanConvertTo (ITypeDescriptorContext context, Type destinationType)
55 if (destinationType == typeof (string))
57 if (destinationType == typeof (InstanceDescriptor))
59 return base.CanConvertTo (context, destinationType);
62 public override object ConvertFrom (ITypeDescriptorContext context, CultureInfo culture, object value)
64 if (value.GetType() == typeof (string)) {
65 string DateString = (String) value;
68 // try to parse string
69 return DateTime.Parse (DateString);
71 // try to parse string
72 return DateTime.Parse (DateString, culture.DateTimeFormat);
74 throw new FormatException (DateString + "is not a valid DateTime value.");
77 return base.ConvertFrom (context, culture, value);
80 public override object ConvertTo (ITypeDescriptorContext context, CultureInfo culture, object value,
83 if (destinationType == typeof (string) && value != null && (value is DateTime)) {
84 CultureInfo CurrentCulture = culture;
85 if (CurrentCulture == null)
86 CurrentCulture = CultureInfo.CurrentCulture;
87 DateTime ConvertTime = (DateTime) value;
89 if (CurrentCulture.Equals(CultureInfo.InvariantCulture)) {
90 if (ConvertTime.Equals(ConvertTime.Date))
91 return ConvertTime.ToString("yyyy-mm-dd");
93 return ConvertTime.ToString ();
95 if (ConvertTime.Equals(ConvertTime.Date))
96 return ConvertTime.ToString (CurrentCulture.DateTimeFormat.ShortDatePattern);
98 return ConvertTime.ToString (CurrentCulture.DateTimeFormat.ShortDatePattern +
99 " " + CurrentCulture.DateTimeFormat.ShortTimePattern);
102 if (destinationType == typeof (InstanceDescriptor) && value is DateTime) {
103 DateTime cval = (DateTime) value;
104 ConstructorInfo ctor = typeof(DateTime).GetConstructor (new Type[] {typeof(long)});
105 return new InstanceDescriptor (ctor, new object[] {cval.Ticks});
107 return base.ConvertTo (context, culture, value, destinationType);