Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / xsp / System / Web / UI / WebControls / CompareValidator.cs / 1 / CompareValidator.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Web.UI.WebControls { using System.ComponentModel; using System.Web; using System.Globalization; using System.Security.Permissions; using System.Web.Util; ////// [ ToolboxData("<{0}:CompareValidator runat=\"server\" ErrorMessage=\"CompareValidator\">{0}:CompareValidator>") ] [AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)] [AspNetHostingPermission(SecurityAction.InheritanceDemand, Level=AspNetHostingPermissionLevel.Minimal)] public class CompareValidator : BaseCompareValidator { ///Compares the value of an input control to another input control or /// a constant value using a variety of operators and types. ////// [ WebCategory("Behavior"), Themeable(false), DefaultValue(""), WebSysDescription(SR.CompareValidator_ControlToCompare), TypeConverter(typeof(ValidatedControlConverter)) ] public string ControlToCompare { get { object o = ViewState["ControlToCompare"]; return((o == null) ? String.Empty : (string)o); } set { ViewState["ControlToCompare"] = value; } } ///Gets or sets the ID of the input control to compare with. ////// [ WebCategory("Behavior"), Themeable(false), DefaultValue(ValidationCompareOperator.Equal), WebSysDescription(SR.CompareValidator_Operator) ] public ValidationCompareOperator Operator { get { object o = ViewState["Operator"]; return((o == null) ? ValidationCompareOperator.Equal : (ValidationCompareOperator)o); } set { if (value < ValidationCompareOperator.Equal || value > ValidationCompareOperator.DataTypeCheck) { throw new ArgumentOutOfRangeException("value"); } ViewState["Operator"] = value; } } ///Gets or sets the comparison operation to perform. ////// [ WebCategory("Behavior"), Themeable(false), DefaultValue(""), WebSysDescription(SR.CompareValidator_ValueToCompare) ] public string ValueToCompare { get { object o = ViewState["ValueToCompare"]; return((o == null) ? String.Empty : (string)o); } set { ViewState["ValueToCompare"] = value; } } //Gets or sets the specific value to compare with. ///// AddAttributesToRender method // ////// /// protected override void AddAttributesToRender(HtmlTextWriter writer) { base.AddAttributesToRender(writer); if (RenderUplevel) { string id = ClientID; HtmlTextWriter expandoAttributeWriter = (EnableLegacyRendering) ? writer : null; AddExpandoAttribute(expandoAttributeWriter, id, "evaluationfunction", "CompareValidatorEvaluateIsValid", false); if (ControlToCompare.Length > 0) { string controlToCompareID = GetControlRenderID(ControlToCompare); AddExpandoAttribute(expandoAttributeWriter, id, "controltocompare", controlToCompareID); AddExpandoAttribute(expandoAttributeWriter, id, "controlhookup", controlToCompareID); } if (ValueToCompare.Length > 0) { string valueToCompareString = ValueToCompare; if (CultureInvariantValues) { valueToCompareString = ConvertCultureInvariantToCurrentCultureFormat(valueToCompareString, Type); } AddExpandoAttribute(expandoAttributeWriter, id, "valuetocompare", valueToCompareString); } if (Operator != ValidationCompareOperator.Equal) { AddExpandoAttribute(expandoAttributeWriter, id, "operator", PropertyConverter.EnumToString(typeof(ValidationCompareOperator), Operator), false); } } } ///Adds the attributes of this control to the output stream for rendering on the /// client. ////// /// protected override bool ControlPropertiesValid() { // Check the control id references if (ControlToCompare.Length > 0) { CheckControlValidationProperty(ControlToCompare, "ControlToCompare"); if (StringUtil.EqualsIgnoreCase(ControlToValidate, ControlToCompare)) { throw new HttpException(SR.GetString(SR.Validator_bad_compare_control, ID, ControlToCompare)); } } else { // Check Values if (Operator != ValidationCompareOperator.DataTypeCheck && !CanConvert(ValueToCompare, Type, CultureInvariantValues)) { throw new HttpException( SR.GetString( SR.Validator_value_bad_type, new string [] { ValueToCompare, "ValueToCompare", ID, PropertyConverter.EnumToString(typeof(ValidationDataType), Type), })); } } return base.ControlPropertiesValid(); } ///Checks the properties of a the control for valid values. ////// /// EvaluateIsValid method /// protected override bool EvaluateIsValid() { Debug.Assert(PropertiesValid, "Properties should have already been checked"); // Get the peices of text from the control. string leftText = GetControlValidationValue(ControlToValidate); Debug.Assert(leftText != 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 (leftText.Trim().Length == 0) { return true; } // VSWhidbey 83168 bool convertDate = (Type == ValidationDataType.Date && !DetermineRenderUplevel()); if (convertDate && !IsInStandardDateFormat(leftText)) { leftText = ConvertToShortDateString(leftText); } // The control has precedence over the fixed value bool isCultureInvariantValue = false; string rightText = string.Empty; if (ControlToCompare.Length > 0) { rightText = GetControlValidationValue(ControlToCompare); Debug.Assert(rightText != null, "Should have already caught this!"); // VSWhidbey 83089 if (convertDate && !IsInStandardDateFormat(rightText)) { rightText = ConvertToShortDateString(rightText); } } else { rightText = ValueToCompare; isCultureInvariantValue = CultureInvariantValues; } return Compare(leftText, false, rightText, isCultureInvariantValue, Operator, Type); } } }
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