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

   1 //
   2 // System.Web.UI.WebControls.RangeValidator.cs
   3 //
   4 // Authors:
   5 //   Gaurav Vaish (gvaish@iitk.ac.in)
   6 //   Andreas Nahr (ClassDevelopment@A-SoftTech.com)
   7 //
   8 // (C) Gaurav Vaish (2002)
   9 // (C) 2003 Andreas Nahr
  10 //
  11
  12 //
  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:
  20 //
  21 // The above copyright notice and this permission notice shall be
  22 // included in all copies or substantial portions of the Software.
  23 //
  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.
  31 //
  32 \r
  33 using System;
  34 using System.ComponentModel;\r
  35 using System.Web;\r
  36 using System.Web.UI;\r
  37 using System.Xml;\r
  38 \r
  39 namespace System.Web.UI.WebControls\r
  40 {\r
  41         [ToolboxData("<{0}:RangeValidator runat=\"server\" "\r
  42                       + "ErrorMessage=\"RangeValidator\"></{0}:RangeValidator>")]\r
  43         public class RangeValidator : BaseCompareValidator\r
  44         {\r
  45                 public RangeValidator(): base()\r
  46                 {\r
  47                 }\r
  48
  49                 [DefaultValue (""), Bindable (true), WebCategory ("Behavior")]
  50                 [WebSysDescription ("The maximum value that the validated control can be assigned.")]\r
  51                 public string MaximumValue\r
  52                 {\r
  53                         get\r
  54                         {\r
  55                                 object o = ViewState["MaximumValue"];\r
  56                                 if(o != null)\r
  57                                 {\r
  58                                         return (string)o;\r
  59                                 }\r
  60                                 return String.Empty;\r
  61                         }\r
  62                         set\r
  63                         {\r
  64                                 ViewState["MaximumValue"] = value;\r
  65                         }\r
  66                 }\r
  67
  68                 [DefaultValue (""), Bindable (true), WebCategory ("Behavior")]
  69                 [WebSysDescription ("The minimum value that the validated control can be assigned.")]\r
  70                 public string MinimumValue\r
  71                 {\r
  72                         get\r
  73                         {\r
  74                                 object o = ViewState["MinimumValue"];\r
  75                                 if(o != null)\r
  76                                 {\r
  77                                         return (string)o;\r
  78                                 }\r
  79                                 return String.Empty;\r
  80                         }\r
  81                         set\r
  82                         {\r
  83                                 ViewState["MinimumValue"] = value;\r
  84                         }\r
  85                 }\r
  86 \r
  87                 protected override void AddAttributesToRender(HtmlTextWriter writer)\r
  88                 {\r
  89                         base.AddAttributesToRender(writer);\r
  90                         if(base.RenderUplevel)\r
  91                         {\r
  92                                 writer.AddAttribute("evaluationfunction", "RangeValidatorEvaluateIsValid");\r
  93                                 writer.AddAttribute("maximumvalue", MaximumValue);\r
  94                                 writer.AddAttribute("minimumvalue", MinimumValue);\r
  95                         }\r
  96                 }\r
  97 \r
  98                 protected override bool ControlPropertiesValid()\r
  99                 {\r
 100                         string max = MaximumValue;\r
 101                         if(!CanConvert(max, Type))\r
 102                         {\r
 103                                 string[] fmt = new string[4];\r
 104                                 fmt[0] = max;\r
 105                                 fmt[1] = "MaximumValue";\r
 106                                 fmt[2] = ID;\r
 107                                 fmt[3] = PropertyConverter.EnumToString(typeof(ValidationDataType), Type);\r
 108                                 throw new HttpException(HttpRuntime.FormatResourceString("Validator_value_bad_type", fmt));\r
 109                         }\r
 110                         string min = MinimumValue;\r
 111                         if(!CanConvert(min, Type))\r
 112                         {\r
 113                                 string[] fmt = new string[4];\r
 114                                 fmt[0] = min;\r
 115                                 fmt[1] = "MinimumValue";\r
 116                                 fmt[2] = ID;\r
 117                                 fmt[3] = PropertyConverter.EnumToString(typeof(ValidationDataType), Type);\r
 118                                 throw new HttpException(HttpRuntime.FormatResourceString("Validator_value_bad_type", fmt));\r
 119                         }\r
 120 \r
 121                         if(Compare(min,max,  ValidationCompareOperator.GreaterThan, Type))\r
 122                         {\r
 123                                 string[] fmt = new string[3];\r
 124                                 fmt[0] = min;\r
 125                                 fmt[1] = max;\r
 126                                 fmt[2] = PropertyConverter.EnumToString(typeof(ValidationDataType), Type);\r
 127                                 throw new HttpException(HttpRuntime.FormatResourceString("Validator_range_overalap", fmt));\r
 128                         }\r
 129                         return base.ControlPropertiesValid();\r
 130                 }\r
 131 \r
 132                 protected override bool EvaluateIsValid()\r
 133                 {\r
 134                         string ctrl = GetControlValidationValue(ControlToValidate);\r
 135                         if(ctrl == null || ctrl.Trim().Length == 0)\r
 136                         {\r
 137                                 return true;\r
 138                         }\r
 139                         bool retVal = Compare(ctrl, MinimumValue, ValidationCompareOperator.GreaterThanEqual,\r
 140                                              this.Type);\r
 141                         if(retVal)\r
 142                         {\r
 143                                 retVal = Compare(ctrl, MaximumValue, ValidationCompareOperator.LessThanEqual,\r
 144                                                  this.Type);\r
 145                         }\r
 146                         return retVal;\r
 147                 }\r
 148         }\r
 149 }\r