使用类型转换器将定文本转换为指定对象 (转)

/// <summary>
/// 标题：使用类型转换器进行转换
/// 作者：X.X.Y
/// 日期：2009-07-30
/// </summary>
class Program
{
    static void Main(string[] args)
    {
        // 使用类型转换器可以达到你的目的
        // 此处只做了转换，未做验证
        SingleDemo();
        Int32Demo();
        Console.ReadKey();
    }
    /// <summary>
    /// Single 转换示例
    /// </summary>
    public static void SingleDemo()
    {
        String fInput = "1.23456";
        Single fOutputFromTypeString = (System.Single)ConvertFromString("System.Single", fInput);
        Single fOutputFromType = (System.Single)ConvertFromString(typeof(System.Single), fInput);
        Single fOutputFromTypeConverter = (System.Single)ConvertFromString(new SingleConverter(), fInput);
        Console.WriteLine("--------------------------------------");
        Console.WriteLine("{0} Demo", "System.Single");
        Console.WriteLine("--------------------------------------");
        Console.WriteLine("OutputFromTypeString:{0}", fOutputFromTypeString);
        Console.WriteLine("OutputFromType:{0}", fOutputFromType);
        Console.WriteLine("OutputFromTypeConverter:{0}", fOutputFromTypeConverter);
    }
    /// <summary>
    /// Int32 转换示例
    /// </summary>
    public static void Int32Demo()
    {
        String fInput = "123456";
        Int32 fOutputFromTypeString = (System.Int32)ConvertFromString("System.Int32", fInput);
        Int32 fOutputFromType = (System.Int32)ConvertFromString(typeof(System.Int32), fInput);
        Int32 fOutputFromTypeConverter = (System.Int32)ConvertFromString(new Int32Converter(), fInput);
        Console.WriteLine("--------------------------------------");
        Console.WriteLine("{0} Demo", "System.Int32");
        Console.WriteLine("--------------------------------------");
        Console.WriteLine("OutputFromTypeString:{0}", fOutputFromTypeString);
        Console.WriteLine("OutputFromType:{0}", fOutputFromType);
        Console.WriteLine("OutputFromTypeConverter:{0}", fOutputFromTypeConverter);
    }
    /// <summary>
    /// 将指定文本转换为对象
    /// </summary>
    /// <param name="fTypeString">需要转换成的类型字符串</param>
    /// <param name="fInput">需要转换的文本</param>
    public static object ConvertFromString(String fTypeString, String fInput)
    {
        return ConvertFromString(Type.GetType(fTypeString), fInput);
    }
    /// <summary>
    /// 将指定文本转换为对象
    /// </summary>
    /// <param name="fType">需要转换成的类型</param>
    /// <param name="fInput">需要转换的文本</param>
    public static object ConvertFromString(Type fType, String fInput)
    {
        return ConvertFromString(TypeDescriptor.GetConverter(fType), fInput);
    }
    /// <summary>
    /// 将指定文本转换为对象
    /// </summary>
    /// <param name="fTypeConverter">转换器</param>
    /// <param name="fInput">需要转换的文本</param>
    public static object ConvertFromString(TypeConverter fTypeConverter, String fInput)
    {
        return fTypeConverter.ConvertFromString(fInput);
    }
}

原文地址：http://blog.csdn.net/sabty/article/details/4392983