104 lines
3.1 KiB
C#
104 lines
3.1 KiB
C#
//------------------------------------------------------------------------------
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// <copyright file="DataBinding.cs" company="Microsoft">
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// Copyright (c) Microsoft Corporation. All rights reserved.
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// </copyright>
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//------------------------------------------------------------------------------
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/*
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*/
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namespace System.Web.UI {
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using System;
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using System.ComponentModel;
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using System.ComponentModel.Design;
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using System.Data;
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using System.Globalization;
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using System.Security.Permissions;
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using System.Web.Util;
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/// <devdoc>
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/// <para>Enables RAD designers to create data binding expressions
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/// at design time. This class cannot be inherited.</para>
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/// </devdoc>
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public sealed class DataBinding {
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private string propertyName;
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private Type propertyType;
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private string expression;
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/// <devdoc>
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/// <para>Initializes a new instance of the <see cref='System.Web.UI.DataBinding'/> class.</para>
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/// </devdoc>
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public DataBinding(string propertyName, Type propertyType, string expression) {
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this.propertyName = propertyName;
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this.propertyType = propertyType;
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this.expression = expression;
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}
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/// <devdoc>
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/// <para>Indicates the data binding expression to be evaluated.</para>
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/// </devdoc>
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public string Expression {
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get {
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return expression;
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}
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set {
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Debug.Assert((value != null) && (value.Length != 0),
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"Invalid expression");
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expression = value;
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}
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}
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/// <devdoc>
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/// <para>Indicates the name of the property that is to be data bound against. This
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/// property is read-only.</para>
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/// </devdoc>
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public string PropertyName {
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get {
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return propertyName;
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}
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}
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/// <devdoc>
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/// <para>Indicates the type of the data bound property. This property is
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/// read-only.</para>
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/// </devdoc>
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public Type PropertyType {
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get {
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return propertyType;
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}
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}
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/// <devdoc>
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/// DataBinding objects are placed in a hashtable representing the collection
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/// of bindings on a control. There can only be one binding/property, so
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/// the hashcode computation should match the Equals implementation and only
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/// take the property name into account.
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/// </devdoc>
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public override int GetHashCode() {
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return propertyName.ToLower(CultureInfo.InvariantCulture).GetHashCode();
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}
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/// <devdoc>
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/// </devdoc>
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public override bool Equals(object obj) {
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if ((obj != null) && (obj is DataBinding)) {
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DataBinding binding = (DataBinding)obj;
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return StringUtil.EqualsIgnoreCase(propertyName, binding.PropertyName);
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}
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return false;
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}
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}
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}
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