Silverlight 操作技巧

1.Emumeration转化为List

using System;
using System.Linq;
using System.Collections.Generic;
using System.Reflection;

    /// <summary>
    /// Helper class to allow users to get the values of a enumeration
    /// </summary>
    public static class EnumHelper
    {
        /// <summary>
        /// Get values of an enumeration of type T
        /// </summary>
        /// <typeparam name="T">Enumeration type</typeparam>
        /// <returns>List of types in a enumeration</returns>
        public static T[] GetValues<T>()
        {
            Type enumType = typeof(T);

            if (!enumType.IsEnum)
            {
                throw new ArgumentException("Type '" + enumType.Name + "' is not an enum");
            }

            List<T> values = new List<T>();

            var fields = from field in enumType.GetFields()
                         where field.IsLiteral
                         select field;

            foreach (FieldInfo field in fields)
            {
                object value = field.GetValue(enumType);
                values.Add((T)value);
            }

            return values.ToArray();
        }

        /// <summary>
        /// Get all the values of an enumeration of Type enumType
        /// </summary>
        /// <param name="enumType">Enumeration type</param>
        /// <returns>Array of objects</returns>
        public static object[] GetValues(Type enumType)
        {
            if (!enumType.IsEnum)
            {
                throw new ArgumentException("Type '" + enumType.Name + "' is not an enum");
            }

            List<object> values = new List<object>();

            var fields = from field in enumType.GetFields()
                         where field.IsLiteral
                         select field;

            foreach (FieldInfo field in fields)
            {
                object value = field.GetValue(enumType); //field.Name 可以得到把这个函数改为GetNames
                values.Add(value);
            }

            return values.ToArray();
        }
    }

2.How to use String Resources

To start, open up your App.xaml file and add a reference to the MSCORLIB library as seen highlighted here.

<Application xmlns=http://schemas.microsoft.com/winfx/2006/xaml/presentation
xmlns:x=http://schemas.microsoft.com/winfx/2006/xaml
xmlns:clr="clr-namespace:System;assembly=mscorlib"
x:Class="TestApp.App">

One place you can add all your strings is under the Application.Resources section in your App.xaml. To illustrate this, I have added one string resource that can be referenced through the key “MyName”.

<Application.Resources>
<clr:String x:Key="MyName">Mike Snow</clr:String>
</Application.Resources>

Finally, open up Page.xaml and add a TextBlock. Set the text of this TextBlock to point to the string resource we just added. This can be done by using the syntax Text=”{StaticResource MyName}” as seen here:

<TextBlock Text="{StaticResource MyName}"></TextBlock>

 

3 url string resolution to resources in the hosting web application.

namespace SilverTools.Utilities.Misc
{
    public static class UriHelper
    {
        public static Uri ConvertToUri(this string partialPath,UriKind uriKind)
        {
            return new Uri(partialPath, uriKind);
           
        }
        public static Uri ConvertToUri(this string partialPath)
        {
            return new Uri(Application.Current.Host.Source, partialPath);
        }
        public static string ConvertToUrl(this string partialPath)
        {
            return new Uri(Application.Current.Host.Source, partialPath).AbsoluteUri;
        }
    }
}