1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
|
/**
* Namespace: System.Web.UI.WebControls
* Class: RangeValidator
*
* Author: Gaurav Vaish
* Maintainer: gvaish@iitk.ac.in
* Contact: <my_scripts2001@yahoo.com>, <gvaish@iitk.ac.in>
* Implementation: yes
* Status: 100%
*
* (C) Gaurav Vaish (2002)
*/
using System;
using System.Web;
using System.Web.UI;
using System.Xml;
namespace System.Web.UI.WebControls
{
[ToolboxData("<{0}:RangeValidator runat=\"server\" "
+ "ErrorMessage=\"RangeValidator\"></{0}:RangeValidator>")]
public class RangeValidator : BaseCompareValidator
{
public RangeValidator(): base()
{
}
public string MaximumValue
{
get
{
object o = ViewState["MaximumValue"];
if(o != null)
{
return (string)o;
}
return String.Empty;
}
set
{
ViewState["MaximumValue"] = value;
}
}
public string MinimumValue
{
get
{
object o = ViewState["MinimumValue"];
if(o != null)
{
return (string)o;
}
return String.Empty;
}
set
{
ViewState["MinimumValue"] = value;
}
}
protected override void AddAttributesToRender(HtmlTextWriter writer)
{
base.AddAttributesToRender(writer);
if(base.RenderUplevel)
{
writer.AddAttribute("evaluationfunction", "RangeValidatorEvaluateIsValid");
writer.AddAttribute("maximumvalue", MaximumValue);
writer.AddAttribute("minimumvalue", MinimumValue);
}
}
protected override bool ControlPropertiesValid()
{
string max = MaximumValue;
if(!CanConvert(max, Type))
{
string[] fmt = new string[4];
fmt[0] = max;
fmt[1] = "MaximumValue";
fmt[2] = ID;
fmt[3] = PropertyConverter.EnumToString(typeof(ValidationDataType), Type);
throw new HttpException(HttpRuntime.FormatResourceString("Validator_value_bad_type", fmt));
}
string min = MaximumValue;
if(!CanConvert(min, Type))
{
string[] fmt = new string[4];
fmt[0] = min;
fmt[1] = "MinimumValue";
fmt[2] = ID;
fmt[3] = PropertyConverter.EnumToString(typeof(ValidationDataType), Type);
throw new HttpException(HttpRuntime.FormatResourceString("Validator_value_bad_type", fmt));
}
if(Compare(max, min, ValidationCompareOperator.GreaterThan, ValidationDataType.Double))
{
string[] fmt = new string[3];
fmt[0] = min;
fmt[1] = max;
fmt[2] = PropertyConverter.EnumToString(typeof(ValidationDataType), Type);
throw new HttpException(HttpRuntime.FormatResourceString("Validator_range_overalap", fmt));
}
return base.ControlPropertiesValid();
}
protected override bool EvaluateIsValid()
{
string ctrl = GetControlValidationValue(ControlToValidate);
if(ctrl == null || ctrl.Trim().Length == 0)
{
return true;
}
bool retVal = Compare(ctrl, MinimumValue, ValidationCompareOperator.GreaterThanEqual,
ValidationDataType.String);
if(!retVal)
{
retVal = Compare(ctrl, MaximumValue, ValidationCompareOperator.LessThanEqual,
ValidationDataType.String);
}
return retVal;
}
}
}
|
