Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / CompMod / System / ComponentModel / ArrayConverter.cs / 1 / ArrayConverter.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- /* */ namespace System.ComponentModel { using Microsoft.Win32; using System.Collections; using System.Diagnostics; using System.Globalization; using System.Runtime.InteropServices; using System.Runtime.Remoting; using System.Runtime.Serialization.Formatters; using System.Security.Permissions; ////// [HostProtection(SharedState = true)] public class ArrayConverter : CollectionConverter { ///Provides a type converter to convert ////// objects to and from various other representations. /// public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType) { if (destinationType == null) { throw new ArgumentNullException("destinationType"); } if (destinationType == typeof(string)) { if (value is Array) { return SR.GetString(SR.ArrayConverterText, value.GetType().Name); } } return base.ConvertTo(context, culture, value, destinationType); } ///Converts the given value object to the specified destination type. ////// public override PropertyDescriptorCollection GetProperties(ITypeDescriptorContext context, object value, Attribute[] attributes) { PropertyDescriptor[] props = null; if (value.GetType().IsArray) { Array valueArray = (Array)value; int length = valueArray.GetLength(0); props = new PropertyDescriptor[length]; Type arrayType = value.GetType(); Type elementType = arrayType.GetElementType(); for (int i = 0; i < length; i++) { props[i] = new ArrayPropertyDescriptor(arrayType, elementType, i); } } return new PropertyDescriptorCollection(props); } ///Gets a collection of properties for the type of array /// specified by the value /// parameter. ////// public override bool GetPropertiesSupported(ITypeDescriptorContext context) { return true; } private class ArrayPropertyDescriptor : SimplePropertyDescriptor { private int index; public ArrayPropertyDescriptor(Type arrayType, Type elementType, int index) : base(arrayType, "[" + index + "]", elementType, null) { this.index = index; } public override object GetValue(object instance) { if (instance is Array) { Array array = (Array)instance; if (array.GetLength(0) > index) { return array.GetValue(index); } } return null; } public override void SetValue(object instance, object value) { if (instance is Array) { Array array = (Array)instance; if (array.GetLength(0) > index) { array.SetValue(value, index); } OnValueChanged(instance, EventArgs.Empty); } } } } }Gets a value indicating whether this object /// supports properties. ///
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