通用TryParse

您应该使用TypeDescriptor类：

public static T Convert<T>(this string input){    try    {        var converter = TypeDescriptor.GetConverter(typeof(T));        if(converter != null)        { // Cast ConvertFromString(string text) : object to (T) return (T)converter.ConvertFromString(input);        }        return default(T);    }    catch (NotSupportedException)    {        return default(T);    }}