mcs/class/System.Web/System.Web.UI.WebControls/ValidatedControlConverter.cs

   1 /**\r
   2  * Namespace: System.Web.UI.WebControls\r
   3  * Class:     ValidatedControlConverter\r
   4  * \r
   5  * Author:  Gaurav Vaish\r
   6  * Maintainer: gvaish@iitk.ac.in\r
   7  * Contact: <my_scripts2001@yahoo.com>, <gvaish@iitk.ac.in>\r
   8  * Implementation: yes\r
   9  * Status:  100%\r
  10  * \r
  11  * (C) Gaurav Vaish (2002)\r
  12  */\r
  13 \r
  14 using System;\r
  15 using System.ComponentModel;\r
  16 using System.Web;\r
  17 using System.Web.UI;\r
  18 \r
  19 namespace System.Web.UI.WebControls\r
  20 {\r
  21         public class ValidatedControlConverter : StringConverter\r
  22         {\r
  23                 public ValidatedControlConverter(): base()\r
  24                 {\r
  25                 }\r
  26                 \r
  27                 private object[] GetValues(IContainer container)\r
  28                 {\r
  29                         ArrayList values = new ArrayList();\r
  30                         IEnumerator ie = container.Components.GetEnumerator();\r
  31                         try\r
  32                         {\r
  33                                 foreach(IComponent current in container.Components)\r
  34                                 {\r
  35                                         Control ctrl = (Control)current;\r
  36                                         if(ctrl == null || ctrl.ID == null || ctrl.ID.Length == 0)\r
  37                                                 continue;\r
  38                                         ValidationPropertyAttribute attrib = (ValidationPropertyAttribute)((TypeDescriptor.GetAttributes(ctrl))[typeof(ValidationPropertyAttribute)]);\r
  39                                         if(attrib == null || attrib.Name == null)\r
  40                                                 continue;\r
  41                                         values.Add(String.Copy(ctrl.ID));\r
  42                                 }\r
  43                         }finally\r
  44                         {\r
  45                                 if(ie is IDisposable)\r
  46                                         ie.Dispose();\r
  47                         }\r
  48                         values.Sort();\r
  49                         return values.ToArray();\r
  50                 }\r
  51 \r
  52                 public override StandardValuesCollection GetStandardValues(ITypeDescriptorContext context)\r
  53                 {\r
  54                         if(context != null && context.Container != null)\r
  55                         {\r
  56                                 object[] values = GetValues(context.Container);\r
  57                                 if(values != null)\r
  58                                 {\r
  59                                         return new StandardValuesCollection(values);\r
  60                                 }\r
  61                         }\r
  62                         return null;\r
  63                 }\r
  64 \r
  65                 public override bool GetStandardValuesExclusive(ITypeDescriptorContext context)\r
  66                 {\r
  67                         return false;\r
  68                 }\r
  69                 \r
  70                 public override bool GetStandardValuesSupported(ITypeDescriptorContext context)\r
  71                 {\r
  72                         return true;\r
  73                 }\r
  74         }\r
  75 }\r