Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / xsp / System / Web / UI / WebControls / VerticalAlignConverter.cs / 1 / VerticalAlignConverter.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- // namespace System.Web.UI.WebControls { using System; using System.Collections; using System.ComponentModel; using System.Globalization; internal class VerticalAlignConverter : EnumConverter { static string[] stringValues = new String[(int) VerticalAlign.Bottom + 1]; static VerticalAlignConverter () { stringValues[(int) VerticalAlign.NotSet] = "NotSet"; stringValues[(int) VerticalAlign.Top] = "Top"; stringValues[(int) VerticalAlign.Middle] = "Middle"; stringValues[(int) VerticalAlign.Bottom] = "Bottom"; } // this constructor needs to be public despite the fact that it's in an internal // class so it can be created by Activator.CreateInstance. public VerticalAlignConverter () : base(typeof(VerticalAlign)) {} public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType) { if (sourceType == typeof(string)) { return true; } else { return base.CanConvertFrom(context, sourceType); } } public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value) { if (value == null) return null; if (value is string) { string textValue = ((string)value).Trim(); if (textValue.Length == 0) return VerticalAlign.NotSet; switch (textValue) { case "NotSet": return VerticalAlign.NotSet; case "Top": return VerticalAlign.Top; case "Middle": return VerticalAlign.Middle; case "Bottom": return VerticalAlign.Bottom; } } return base.ConvertFrom(context, culture, value); } public override bool CanConvertTo(ITypeDescriptorContext context, Type sourceType) { if (sourceType == typeof(string)) { return true; } return base.CanConvertTo(context, sourceType); } public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType) { if (destinationType == typeof(string) && ((int) value <= (int)VerticalAlign.Bottom)) { return stringValues[(int) value]; } return base.ConvertTo(context, culture, value, destinationType); } } }
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