[C#.NET] 使用 AutoMapper.Profile 簡化對應設定

2014-12-12

7227
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AutoMapper
2016-07-15

續上篇，http://www.dotblogs.com.tw/yc421206/archive/2014/12/12/147617.aspx#%E4%BD%BF%E7%94%A8%20AutoMapper%20%E8%99%95%E7%90%86%E7%89%A9%E4%BB%B6%E6%98%A0%E5%B0%84

我們應該要把這些對應關係給集中管理，設定一次所有的開發人員都能夠用，AutoMapper 也有提供集中管理的機制，真是太棒了

很簡單，只要實作 AutoMapper.Profile 並覆寫 Configure 方法，把相關的對應關係擺好

@ AccountMapperProfile：

public class AccountMapperProfile : Profile
{
	protected override void Configure()
	{
		Mapper.CreateMap<Account, AccountTwViewModel>()
			.ForMember(target => target.帳號, option => option.MapFrom(source => source.UserId))
			.ForMember(target => target.密碼, option => option.MapFrom(source => source.Password));
		Mapper.CreateMap<AccountTwViewModel, Account>()
			.ForMember(target => target.UserId, option => option.MapFrom(source => source.帳號))
			.ForMember(target => target.Password,option => option.MapFrom(source => source.密碼));
	}
}

@ 調用端：

1.用戶端調用 Mapper.Initialize 把映射關係加進去

Mapper.Initialize(x => x.AddProfile<AccountMapperProfile>());

2.再調用 Mapper.Map 方法，就可以產生新的物件

Mapper.Map<AccountTwViewModel>(account);

程式碼如下：

public class UnitTest3
{
	[TestMethod]
	public void AutoMapper_Account_AccountTwViewModel_Test()
	{
		Account account = new Account();
		account.UserId = "yao123";
		account.Password = "1234";
		Mapper.Initialize(x => x.AddProfile<AccountMapperProfile>());
		var actual = Mapper.Map<AccountTwViewModel>(account);
		Assert.AreEqual(account.UserId, actual.帳號);
		Assert.AreEqual(account.Password, actual.密碼);
	}
}

完整程式碼路徑如下：

https://dotblogsamples.codeplex.com/SourceControl/latest#Simple.AutoMapViewModel/UnitTestProject1/UnitTest3.cs

文章出自：http://www.dotblogs.com.tw/yc421206/archive/2014/12/12/147619.aspx

範例專案：https://dotblogsamples.codeplex.com/SourceControl/latest#Simple.AutoMapViewModel/

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