public static void FormatterTest()
{
//SimplePerson person = new SimplePerson() { FirstName = "Jessica", LastName = "Hu", IDCode = "NB123" };
//Console.WriteLine(person.ToString());
//PersonFomatter pFormatter = new PersonFomatter();
//Console.WriteLine(pFormatter.Format("Ch", person, null));
//Console.WriteLine(pFormatter.Format("Eg", person, null));
//Console.WriteLine(pFormatter.Format("ChM", person, null));
SimplePerson person = new SimplePerson()
{
FirstName = "Jessica", LastName = "Hu", IDCode = "NB123"
};
Console.WriteLine(person.ToString());
PersonFomatter pFormatter = new PersonFomatter();
//第一类格式化输出语法
Console.WriteLine(pFormatter.Format("Ch", person, null));
Console.WriteLine(pFormatter.Format("Eg", person, null));
Console.WriteLine(pFormatter.Format("ChM", person, null));
//第二类格式化输出语法，也更简洁
Console.WriteLine(person.ToString("Ch", pFormatter));
Console.WriteLine(person.ToString("Eg", pFormatter));
Console.WriteLine(person.ToString("ChM", pFormatter));
}
public string Format(string format, object arg, IFormatProvider formatProvider)
{
SimplePerson person = arg as SimplePerson;
if (person == null)
{
return(string.Empty);
}
switch (format)
{
case "Ch":
return(string.Format("{0} {1}", person.LastName, person.FirstName));
case "Eg":
return(string.Format("{0} {1}", person.FirstName, person.LastName));
case "ChM":
return(string.Format("{0} {1} : {2}", person.LastName, person.FirstName, person.IDCode));
default:
return(string.Format("{0} {1}", person.FirstName, person.LastName));
}
}
