Question

我开始使用XNA框架在C＃中编程。我创建了新的解决方案，制作了程序，保存了它。程序正在工作，没有错误。在我打开解决方案的第二天，我在一个文件中遇到了很多错误。代码似乎没问题，这里注释中有错误：

using System;
using System.Collections.Generic;
using System.Linq;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Audio;
using Microsoft.Xna.Framework.Content;
using Microsoft.Xna.Framework.GamerServices;
using Microsoft.Xna.Framework.Graphics;
using Microsoft.Xna.Framework.Input;
using Microsoft.Xna.Framework.Media;
using The_Destiny_of_Azureus.Komponenty;

namespace The_Destiny_of_Azureus
{

public class Hra : Microsoft.Xna.Framework.Game
{
    GraphicsDeviceManager graphics;
    public SpriteBatch spriteBatch;

    public int wwidth = 1366;
    public int wheight = 768;

    Texture2D cursor;

    MouseState mouseState;

    public Hra()
    {
        graphics = new GraphicsDeviceManager(this);
        Content.RootDirectory = "Content";
    }


    protected override void Initialize()
    {
        graphics.PreferredBackBufferWidth = wwidth;
        graphics.PreferredBackBufferHeight = wheight;
        graphics.IsFullScreen = false;
        graphics.ApplyChanges();

        MMenu mmenu = new MMenu(this);
        Components.Add(mmenu);           //1 error: } expected


        public Button ngbutton = new Button(this, new Vector2(64, 258), "NEW GAME");     // Keyword 'this' is not available in the current context
        Components.Add(ngbutton);       //3 errors:
                                                     //Invalid token '(' in class, struct, or interface member declaration, 
                                                     //Invalid token ')' in class, struct, or interface member declaration
                                                     //Microsoft.XNA.Framework.Game.Components is a property but is used like a type

        base.Initialize();                       //1 error: Method must have a return type
    }


    protected override void LoadContent()     //1 error: Expected class, delegate, enum, interface, or struct
    {

        spriteBatch = new SpriteBatch(GraphicsDevice);      //1 error: Expected class, delegate, enum, interface, or struct

        cursor = Content.Load<Texture2D>(@"Textury\cursor");
    }


    protected override void UnloadContent()            //1 error: Expected class, delegate, enum, interface, or struct
    {

    }


    protected override void Update(GameTime gameTime)        //1 error: Expected class, delegate, enum, interface, or struct
    {

        if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed)
            this.Exit();


        mouseState = Mouse.GetState();

        base.Update(gameTime);
    }


    protected override void Draw(GameTime gameTime)           //1 error: Expected class, delegate, enum, interface, or struct
    {
        GraphicsDevice.Clear(Color.CornflowerBlue);

        spriteBatch.Begin();
        spriteBatch.Draw(cursor, new Vector2(mouseState.X, mouseState.Y), Color.White);      //1 chyba: Expected class, delegate, enum, interface, or struct
        spriteBatch.End(); 

        base.Draw(gameTime);
    }              //1 error: Type or namespace definition, or end-of-file expected
}
}

错误：

Error   } expected  44  35
Error   Invalid token '(' in class, struct, or interface member declaration 47  27
Error   Invalid token ')' in class, struct, or interface member declaration 47  36
Error   Method must have a return type  49  18
Error   Expected class, delegate, enum, interface, or struct    53  28
Error   Expected class, delegate, enum, interface, or struct    56  31
Error   Expected class, delegate, enum, interface, or struct    62  28
Error   Expected class, delegate, enum, interface, or struct    68  28
Error   Expected class, delegate, enum, interface, or struct    81  28
Error   Expected class, delegate, enum, interface, or struct    86  42
Error   Type or namespace definition, or end-of-file expected   90  9
Error   Keyword 'this' is not available in the current context  46  49
Error   'Microsoft.Xna.Framework.Game.Components' is a 'property' but is used like a 'type' 47  13
Error   'The_Destiny_of_Azureus.Hra.ngbutton' is a 'field' but is used like a 'type'    47  28

我尝试将整个解决方案发送给我的朋友，他打开了解决方案，他在此文件中没有错误。

Answer 1

你的问题在这里：

Components.Add(mmenu);           //1 error: } expected


public Button ngbutton = new Button(this, new Vector2(64, 258), "NEW GAME");     // Keyword 'this' is not available in the current context
Components.Add(ngbutton);       //3 errors:

public关键字对局部变量无效。您要么从类中的成员定义复制并粘贴它，要么只是错误地添加了public。

错误链源于这样一个事实：编译器认为你错过了一个}来结束Initialize并且其余的支撑被抛弃了。

你的同事没有办法拥有那些确切的代码并且无法构建它。

Answer 2

错误完全正确。

拥有public局部变量是没有意义的。

因此，编译器假定您尝试在类上创建字段，但忘记了}。
这会导致更多错误，因为它会根据您想要额外}的错误假设读取其余代码。

Visual C＃Express中的无意义错误

2 个答案: