Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / CompMod / System / ComponentModel / AmbientValueAttribute.cs / 1 / AmbientValueAttribute.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- /* */ namespace System.ComponentModel { using System; using System.ComponentModel; using System.Diagnostics; using System.Globalization; using System.Runtime.InteropServices; using System.Runtime.Serialization.Formatters; using System.Security.Permissions; ////// [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Design", "CA1019:DefineAccessorsForAttributeArguments")] [AttributeUsage(AttributeTargets.All)] public sealed class AmbientValueAttribute : Attribute { private readonly object value; ///Specifies the ambient value for a property. The ambient value is the value you /// can set into a property to make it inherit its ambient. ////// public AmbientValueAttribute(Type type, string value) { // The try/catch here is because attributes should never throw exceptions. We would fail to // load an otherwise normal class. try { this.value = TypeDescriptor.GetConverter(type).ConvertFromInvariantString(value); } catch { Debug.Fail("Ambient value attribute of type " + type.FullName + " threw converting from the string '" + value + "'."); } } ///Initializes a new instance of the ///class, converting the /// specified value to the /// specified type, and using the U.S. English culture as the /// translation /// context. /// public AmbientValueAttribute(char value) { this.value = value; } ///Initializes a new instance of the ///class using a Unicode /// character. /// public AmbientValueAttribute(byte value) { this.value = value; } ///Initializes a new instance of the ///class using an 8-bit unsigned /// integer. /// public AmbientValueAttribute(short value) { this.value = value; } ///Initializes a new instance of the ///class using a 16-bit signed /// integer. /// public AmbientValueAttribute(int value) { this.value = value; } ///Initializes a new instance of the ///class using a 32-bit signed /// integer. /// public AmbientValueAttribute(long value) { this.value = value; } ///Initializes a new instance of the ///class using a 64-bit signed /// integer. /// public AmbientValueAttribute(float value) { this.value = value; } ///Initializes a new instance of the ///class using a /// single-precision floating point /// number. /// public AmbientValueAttribute(double value) { this.value = value; } ///Initializes a new instance of the ///class using a /// double-precision floating point /// number. /// public AmbientValueAttribute(bool value) { this.value = value; } ///Initializes a new instance of the ///class using a /// value. /// public AmbientValueAttribute(string value) { this.value = value; } ///Initializes a new instance of the ///class using a . /// public AmbientValueAttribute(object value) { this.value = value; } ///Initializes a new instance of the ////// class. /// public object Value { get { return value; } } public override bool Equals(object obj) { if (obj == this) { return true; } AmbientValueAttribute other = obj as AmbientValueAttribute; if (other != null) { if (value != null) { return value.Equals(other.Value); } else { return (other.Value == null); } } return false; } public override int GetHashCode() { return base.GetHashCode(); } } }/// Gets the ambient value of the property this /// attribute is /// bound to. /// ///
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