注入已经用Ninject创建的依赖项

本文关键字：依赖 创建 Ninject 注入 | 更新日期: 2023-09-27 17:50:22

我想知道如何使用Ninject来注入一个对象作为该对象已经创建的依赖项。我在主窗口的WPF Window_Loaded方法中有以下代码:

        IKernel kernel = new StandardKernel();
        kernel.Bind<ITeleStore>().To<TeleStore>();
        kernel.Bind<ITreeViewModel>().To<TreeViewModel>();
        var tst = kernel.Get<TeleStore>();
        // rootnode already exists and is obtained from the telestore component
        TstTreeNode rootNode = tst.GetRootNode();
        // how do I use ninject to inject rootnode?
        ITreeViewModel treeViewModel = new TreeViewModel(rootNode);
        base.DataContext = treeViewModel;

注入已经用Ninject创建的依赖项

您可以将根节点作为参数传递给请求!简单到以下

public interfacte ITreeViewModel
{
    public TstTreeNode TestNode {get;}
    ........
    // Other members
}
// Sample Class
public class TreeViewModel : ITreeViewModel
{
    public TreeViewModel(TstTreeNode node) {
       TestNode = node;
    }
    // Implemented from interface
    public TstTreeNode TestNode {get; private set;}
}
// Your code
IKernel kernel = new StandardKernel();
kernel.Bind<ITeleStore>().To<TeleStore>();
kernel.Bind<ITreeViewModel>().To<TreeViewModel>();
var tst = kernel.Get<TeleStore>();
// rootnode already exists and is obtained from the telestore component
TstTreeNode rootNode = tst.GetRootNode();
// how do I use ninject to inject rootnode?
ITreeViewModel treeViewModel = kernel.Get<TreeViewModel>(new ConstructorArgument("node", rootNode));

玩得开心!

你可以尝试使用属性注入来设置TreeViewModel类中的"TstTreeNode"值。下面是一个示例代码:-

    public interfacte ITreeViewModel
    {
        public TstTreeNode TestNode {get;set;}
        ........
        // Other members
    }
    // Sample Class
    public class TreeViewModel : ITreeViewModel
    {
        public TreeViewModel() {}
        // Implemented from interface
        public TstTreeNode TestNode {get;set;}
    }
    // Your code
    IKernel kernel = new StandardKernel();
    kernel.Bind<ITeleStore>().To<TeleStore>();
    kernel.Bind<ITreeViewModel>().To<TreeViewModel>();
    var tst = kernel.Get<TeleStore>();
    // rootnode already exists and is obtained from the telestore component
    TstTreeNode rootNode = tst.GetRootNode();
    // how do I use ninject to inject rootnode?
    ITreeViewModel treeViewModel = kernel.Get<TreeViewModel>();
    // Property Injection
    treeViewModel.TestNode = rootNode
    base.DataContext = treeViewModel;
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