VerticalAlignConverter.cs source code in C# .NET

Source code for the .NET framework in C#

                        
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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