C# · 12月 24, 2021

c# – Unity构造函数参数

class Entity:IEntityName{ #region IEntityName Members public string FirstName { get; set; } public string LastName { get; set; } #endregion}public class Person:IPerson{ public IEntityName EntityName; public Person() { } public Person(IEntityName EntityName) { this.EntityName = EntityName; } public string ReverseName() { return string.Format(“Your reverse name is {0} {1}”,EntityName.LastName,EntityName.FirstName); } public override string ToString() { return string.Format(“Name is {0} {1}”,EntityName.FirstName,EntityName.LastName); }}// Main Methodprivate static string DisplayReverseName(string fName,string lName){ IUnityContainer container = new UnityContainer(); container.RegisterType<IPerson,Person>().RegisterType<IEntityName,Entity>(); IEntityName entityName = container.Resolve<IEntityName>(); entityName.FirstName = fName; entityName.LastName = lName; var p = container.Resolve<IPerson>(); return p.ReverseName(); // firstName and lastName are still null }

如何将firstName和lastName注入Person构造函数?

解决方法 您可以使用ParameterOverride,如: var p = container.Resolve<IPerson>(new ParameterOverride(“EntityName”,entityName));

这告诉unity使用名为“EntityName”的参数将entityName实例提供给构造函数.

您可以在这里找到一些额外的信息:http://msdn.microsoft.com/en-us/library/ff660920(v=pandp.20).aspx