75 lines
2.6 KiB
C#
75 lines
2.6 KiB
C#
//------------------------------------------------------------------------------
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// <copyright file="StringArrayConverter.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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namespace System.Web.UI.WebControls {
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using System.ComponentModel.Design;
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using System;
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using System.ComponentModel;
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using System.Collections;
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using System.Globalization;
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//
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/// <devdoc>
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/// <para>Converts a string separated by commas to and from
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/// an array of strings.</para>
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/// </devdoc>
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public class StringArrayConverter : TypeConverter {
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/// <devdoc>
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/// <para>Determines if the specified data type can be converted to an array of strings. </para>
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/// </devdoc>
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public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType) {
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if (sourceType == typeof(string)) {
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return true;
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}
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return false;
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}
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/// <devdoc>
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/// <para>Parses a string separated by
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/// commas into an array of strings. </para>
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/// </devdoc>
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public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value) {
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if (value is string) {
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if (((string)value).Length == 0) {
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return new string[0];
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}
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// hard code comma, since it is persisted to HTML
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//
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string[] names = ((string)value).Split(new char[] {','});
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for (int i=0; i<names.Length; i++) {
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names[i] = names[i].Trim();
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}
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return names;
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}
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throw GetConvertFromException(value);
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}
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/// <devdoc>
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/// <para> Creates a string separated
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/// by commas from an array of strings.</para>
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/// </devdoc>
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public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType) {
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if (destinationType == typeof(string)) {
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if (value == null) {
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return String.Empty;
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}
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// hard code comma, since it is persisted to HTML
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//
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return string.Join(",", ((string[])value));
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}
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throw GetConvertToException(value, destinationType);
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}
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}
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}
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