c#插件(反射) [英] c# Plugin (reflection)

问题描述

我在创建带有反射的插件解决方案时遇到了麻烦.当我单击menuItem时，我想加载并在窗口中显示另一个程序.我想我需要3个项目.

I'm having trouble with creating a plugin solution with reflection. When I click on a menuItem I would like to load and show another program in my window. I figured I would need 3 projects.

1. 要在单击menuItem时加载另一个程序的客户端程序
2. 我要加载的程序
3. 插件类

代码客户端程序

private void nQueensToolStripMenuItem_Click(object sender, EventArgs e)
    {

        // Create an assembly object to load our classes
        string path = Application.StartupPath + "\\NQueens.dll";
        Assembly ass = Assembly.LoadFile(path);

        Type objType = ass.GetType("NQueens.NQueen");

        // Create an instace of NQueens.NQueen
        var instance = Activator.CreateInstance(objType);

        // public static bool berekenQueens()
        objType.InvokeMember("berekenQueens",
            BindingFlags.InvokeMethod | BindingFlags.Instance | BindingFlags.Static,
            null, instance, null);

        // private static bool bordValidatie
        objType.InvokeMember("bordValidatie",
            BindingFlags.InvokeMethod | BindingFlags.Instance | BindingFlags.Static,
            null, instance, null);
    }

班级

[AttributeUsage(AttributeTargets.Class)]
public class myPluginAttribute : Attribute
{
    private bool _bIsPlugin;
    public Boolean IsPlugin
    {
        get { return _bIsPlugin; }
        set { _bIsPlugin = value; }
    }
    private string _sDescription;
    public string Description
    {
        get { return _sDescription; }
        set { _sDescription = value; }
    }

    public myPluginAttribute(Boolean b, String desc)
    {
        IsPlugin = b;
        Description = desc;
    }
}

NQueens(单击菜单项时要加载的程序) NQueens.cs

NQueens (program i want to load when clicked on menuitem) NQueens.cs

public class NQueen
{
   public static bool berekenQueens(int Row, int N, bool[,] bord)
   {
       if (Row >= N) return true; 

       for (int Col = 0; Col < N; Col++)
       {
           //Q toevoegen
           bord[Row, Col] = true;

           //Q + Q volgende Row  controleren
           if (bordValidatie(Row, Col, bord, N) && berekenQueens(Row + 1, N, bord))
           {
               return true;
           }

           //Q verwijderen indien niet door controle
           bord[Row, Col] = false;

       }
       return false;
   }


   private static bool bordValidatie(int currentRow, int currentCol, bool[,] currentBord, int N)
   {
       int colstep = 1;
       for (int i = currentRow - 1; i >= 0; i--)
       {
           //rechte lijn 
           if (currentBord[i, currentCol])
               return false;

           //linker diagonaal
           if (currentCol - colstep >= 0)
           {
               if (currentBord[i, currentCol - colstep])
                   return false;
           }
           //rechter diagonaal
           if (currentCol + colstep < N)
           {
               if (currentBord[i, currentCol + colstep])
                   return false;
           }
           colstep += 1;
       }
       return true;
   }


}

MainWindow(nqueens)

MainWindow (nqueens)

public partial class MainWindow : Window
{
    public int iN { get { return Convert.ToInt32(txtN.Text); } set { txtN.Text = "" + value; } }
    private bool[,] spelbord;

    public MainWindow()
    {
        InitializeComponent();
    }

    private void button1_Click(object sender, RoutedEventArgs e)
    {
        spelbord = new bool[iN, iN];
        NQueen.berekenQueens(0, iN, spelbord);

        visualise(iN, spelbord);
    }

    private void visualise(int N, bool[,] bord)
    {
        gridTekenen();

        for (int row = 0; row < N; row++)
        {
            for (int col = 0; col < N; col++)
            {
                Rectangle rect = new Rectangle();
                rect.Stretch = Stretch.Fill;

                TextBlock txtB = new TextBlock();

                if (spelbord[row, col])
                {
                    SolidColorBrush mySolidColorBrush = new SolidColorBrush();
                    mySolidColorBrush.Color = Colors.LightGreen;
                    rect.Fill = mySolidColorBrush;

                    txtB.Text = "Q";
                }

                rect.SetValue(Grid.ColumnProperty, col);
                rect.SetValue(Grid.RowProperty, row);

                txtB.SetValue(Grid.ColumnProperty, col);
                txtB.SetValue(Grid.RowProperty, row);

                gridPaneel.Children.Add(rect);
                gridPaneel.Children.Add(txtB);
            }
        }
    }

    private void gridTekenen()
    {
        gridPaneel.ShowGridLines = true;
        int grooteGrid = int.Parse(txtN.Text);

        RowDefinition rowDef;
        ColumnDefinition colDef;


        for (int i = 0; i < grooteGrid; i++)
        {
            rowDef = new RowDefinition();

            GridLengthConverter myGridLengthConverter = new GridLengthConverter();
            GridLength gl1 = (GridLength)myGridLengthConverter.ConvertFromString(150 + "*");
            rowDef.Height = gl1;

            colDef = new ColumnDefinition();
            colDef.Width = gl1;

            gridPaneel.RowDefinitions.Add(rowDef);
            gridPaneel.ColumnDefinitions.Add(colDef);
        }


    }
}

我一直在努力使此事情正常运行.如何使我的程序显示NQueens程序?我的客户程序如何知道NQueen的方法并使用它们?

I'm stuck trying to get this thing working. How can I make my program to show the NQueens program? How does my client program know the methods from NQueen and use them?

我对nQueensToolStripMenuItem_Click方法进行了一些更改.现在正确吗?现在如何在窗口中显示NQueens方法?

I made some changes in the nQueensToolStripMenuItem_Click method. Is this correct now? How can I show the NQueens method in my window now?

推荐答案

据我所知，您将需要一个公共接口，该接口有助于与扩展"进行通信.然后，您将有三个项目:

As far as I know, you will need a common Interface, which helps communicating with the "Extensions". You will then have three projects:

• 您的核心应用程序
• 仅包含接口(即IPlugin)的库
• 您的扩展程序.

请查看 codeproject ，以获得更好的主意关于插件的体系结构.

Have a look at codeproject to get a better idea about the architecture of plugins.

这篇关于c#插件(反射)的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！