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//------------------------------------------------------------------------------
// <copyright file="RangeValidator.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
//------------------------------------------------------------------------------
namespace System.Web.UI.WebControls {
using System.ComponentModel;
using System.Web;
using System.Globalization;
using System.Web.Util;
/// <devdoc>
/// <para> Checks if the value of the associated input control
/// is within some minimum and maximum values, which
/// can be constant values or values of other controls.</para>
/// </devdoc>
[
ToolboxData("<{0}:RangeValidator runat=\"server\" ErrorMessage=\"RangeValidator\"></{0}:RangeValidator>")
]
public class RangeValidator : BaseCompareValidator {
/// <devdoc>
/// <para> Gets or sets the maximum value of the validation range.</para>
/// </devdoc>
[
WebCategory("Behavior"),
Themeable(false),
DefaultValue(""),
WebSysDescription(SR.RangeValidator_MaximumValue)
]
public string MaximumValue {
get {
object o = ViewState["MaximumValue"];
return((o == null) ? String.Empty : (string)o);
}
set {
ViewState["MaximumValue"] = value;
}
}
/// <devdoc>
/// <para> Gets or sets the minimum value of the validation range.</para>
/// </devdoc>
[
WebCategory("Behavior"),
Themeable(false),
DefaultValue(""),
WebSysDescription(SR.RangeValidator_MinmumValue)
]
public string MinimumValue {
get {
object o = ViewState["MinimumValue"];
return((o == null) ? String.Empty : (string)o);
}
set {
ViewState["MinimumValue"] = value;
}
}
/// <internalonly/>
/// <devdoc>
/// AddAttributesToRender method
/// </devdoc>
protected override void AddAttributesToRender(HtmlTextWriter writer) {
base.AddAttributesToRender(writer);
if (RenderUplevel) {
string id = ClientID;
HtmlTextWriter expandoAttributeWriter = (EnableLegacyRendering || IsUnobtrusive) ? writer : null;
AddExpandoAttribute(expandoAttributeWriter, id, "evaluationfunction", "RangeValidatorEvaluateIsValid", false);
string maxValueString = MaximumValue;
string minValueString = MinimumValue;
if (CultureInvariantValues) {
maxValueString = ConvertCultureInvariantToCurrentCultureFormat(maxValueString, Type);
minValueString = ConvertCultureInvariantToCurrentCultureFormat(minValueString, Type);
}
AddExpandoAttribute(expandoAttributeWriter, id, "maximumvalue", maxValueString);
AddExpandoAttribute(expandoAttributeWriter, id, "minimumvalue", minValueString);
}
}
/// <internalonly/>
/// <devdoc>
/// This is a check of properties to determine any errors made by the developer
/// </devdoc>
protected override bool ControlPropertiesValid() {
ValidateValues();
return base.ControlPropertiesValid();
}
/// <internalonly/>
/// <devdoc>
/// EvaluateIsValid method
/// </devdoc>
protected override bool EvaluateIsValid() {
Debug.Assert(PropertiesValid, "Should have already been checked");
// Get the peices of text from the control(s).
string text = GetControlValidationValue(ControlToValidate);
Debug.Assert(text != null, "Should have already caught this!");
// Special case: if the string is blank, we don't try to validate it. The input should be
// trimmed for coordination with the RequiredFieldValidator.
if (text.Trim().Length == 0) {
return true;
}
// VSWhidbey 83168
if (Type == ValidationDataType.Date &&
!DetermineRenderUplevel() &&
!IsInStandardDateFormat(text)) {
text = ConvertToShortDateString(text);
}
return(Compare(text, false, MinimumValue, CultureInvariantValues, ValidationCompareOperator.GreaterThanEqual, Type)
&& Compare(text, false, MaximumValue, CultureInvariantValues, ValidationCompareOperator.LessThanEqual, Type));
}
/// <devdoc>
///
/// </devdoc>
private void ValidateValues() {
// Check the control values can be converted to data type
string maximumValue = MaximumValue;
if (!CanConvert(maximumValue, Type, CultureInvariantValues)) {
throw new HttpException(
SR.GetString(SR.Validator_value_bad_type,
new string [] {
maximumValue,
"MaximumValue",
ID,
PropertyConverter.EnumToString(typeof(ValidationDataType), Type)
}));
}
string minumumValue = MinimumValue;
if (!CanConvert(minumumValue, Type, CultureInvariantValues)) {
throw new HttpException(
SR.GetString(SR.Validator_value_bad_type,
new string [] {
minumumValue,
"MinimumValue",
ID,
PropertyConverter.EnumToString(typeof(ValidationDataType), Type)
}));
}
// Check for overlap.
if (Compare(minumumValue, CultureInvariantValues,
maximumValue, CultureInvariantValues,
ValidationCompareOperator.GreaterThan, Type)) {
throw new HttpException(
SR.GetString(SR.Validator_range_overalap,
new string [] {
maximumValue,
minumumValue,
ID,
}));
}
}
}
}
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