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