C#将类类型作为参数传递

Question

这适用于C#？ 将类类型作为参数传递

我有一个实现接口的类适配器.我想用MyFooClass实例填充数组结构,其中MyFooClass的名称或引用我想从外部接收它.我将在我的适配器代码中实例化它们.

例如:

    public void FillWsvcStructs(DataSet ds, ClassType Baz)
    {
        IFoo.Request = ds.DataTable[0].Request;
        IFoo.Modulebq = string.Empty;
        IFoo.Clasific = string.Empty;
        IFoo.Asignadoa = ds.DataTable[0].Referer;
        IFoo.Solicita = "Jean Paul Goitier";


        // Go with sub-Elems (Also "Interfaceated")
        foreach (DataSet.DataTableRow ar in ds.DataTable[1])
        {
            if ((int) ar.StatusOT != (int)Props.StatusOT.NotOT)
            {
                ///From HERE!
                IElemRequest req = new (Baz)(); // I don't know how to do it here
                ///To HERE!

                req.Id = string.Empty;
                req.Type = string.Empty;
                req.Num = string.Empty;
                req.Message = string.Empty;
                req.Trkorr = ar[1];
                TRequest.Add(req);
            }
        }
    }

Answer 1

泛型和它们的约束应该做你想要什么,我相信:

public void FillWsvcStructs<ClassType>(DataSet ds) where ClassType : IElemRequest, new()
{
    IFoo.Request = ds.DataTable[0].Request;
    IFoo.Modulebq = string.Empty;
    IFoo.Clasific = string.Empty;
    IFoo.Asignadoa = ds.DataTable[0].Referer;
    IFoo.Solicita = "Jean Paul Goitier";


    // Go with sub-Elems (Also "Interfaceated")
    foreach (DataSet.DataTableRow ar in ds.DataTable[1])
    {
        if ((int) ar.StatusOT != (int)Props.StatusOT.NotOT)
        {
            IElemRequest req = new ClassType();

            req.Id = string.Empty;
            req.Type = string.Empty;
            req.Num = string.Empty;
            req.Message = string.Empty;
            req.Trkorr = ar[1];
            TRequest.Add(req);
        }
    }
}

Answer 2

使用泛型可能最好解决了这个问题:

public void FillWsvcStructs<T>(DataSet ds) where T : IElemRequest, new()
{
   //..
   //new() constraint enables using default constructor     
   IElemRequest req = new T(); 
   //IElemRequest constraint enables using interface properties
   req.Id = string.Empty;
   //..
 }

如果您有多种类型需要能够访问/实例化,则声明遵循相同的规则(可以从msdn轻松收集):

public void FillWsvcStructs<T, U, V>() where T : IElemRequest, new() 
                                       where U : IFoo, new()
                                       where V : IBar, new()
{

    //..
}