[英]C# Class public int cannot reference the non-static int
I am having a small problem, (I looked around to fine something like this but it did not help) were I create int size = 1;
我遇到了一个小问题,(我环顾四周可以对这样的东西进行罚款,但没有帮助),如果我创建了
int size = 1;
and then have a public int backgroundWidth = size * Images.Background.Width;
然后具有一个公共int
backgroundWidth = size * Images.Background.Width;
. 。 This worked when it was a
static int
but I want to change the int at will. 当它是
static int
时此方法有效,但我想随意更改int。 This is all in the same class and should be working but it does not like to multiply ints
? 这都在同一个类中,应该可以工作,但是它不喜欢乘
ints
吗?
EDIT: 10:21 12/3/2013 编辑:10: 21 12/3/2013
@dcastro I try to use that format that was given to me but a small problem is still there. @dcastro我尝试使用给我的格式,但是仍然存在一个小问题。
because I am using XNA and the format may have been a little off, here is the more indepf code: 因为我使用的是XNA,而且格式可能有一些偏差,所以这里是更独立的代码:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Microsoft.Xna.Framework;
namespace **.StartUp
{
public class Resize
{
#region Define
private int size = 1;
//
public int backgroundWidth;
public int backgroundHeight;
#endregion
#region Update
public static void Update(GameTime gameTime)
{
}
#endregion
#region public Methods
#endregion
}
}
I have defined the int's but when I add the lower half of the code it needs a return value for it to work. 我已经定义了int,但是当我添加代码的下半部分时,它需要一个返回值才能起作用。 Or I may be over complicating it.
否则我可能会使其复杂化。
I add this in to public methods: 我将其添加到公共方法中:
public MyClass()
{
backgroundWidth = size * Images.Background.Width;
}
EDIT: 10:35 12/3/2013 编辑: 10 : 35 12/3/2013
The error now is that the method needs to have a return type and am stick not knowing what to do. 现在的错误是该方法需要具有返回类型,并且不知道该怎么做。 I am learning as much as possible and am right now resurrecting what I have to do.
我正在学习尽可能多的知识,现在正在复活我必须做的事情。 I would like to have some help if possible, thank you.
如果可以的话,我想获得一些帮助,谢谢。
EDIT: 10:26 12/4/2013 编辑: 10 : 26 12/4/2013
I have now been able to call on the image, but using a diffrent method, I still use the Resize
class but only construct them and then use them in the main class( Game1.cs
). 现在,我已经可以调用图像了,但是使用一种不同的方法,我仍然使用
Resize
类,但只构造它们,然后在主类( Game1.cs
)中使用它们。 I add a bool so that when ever some one wants to change the size it will make an if statment go through and change the integers. 我添加了一个布尔值,以便在有人想要更改大小时都会通过if语句并更改整数。
Game1.cs
(Update Method): Game1.cs
(更新方法):
protected override void Update(GameTime gameTime)
{
// Allows the game to exit
if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed)
this.Exit();
#region GameState Switch
switch (gameState)
{
case GameStates.StartUp:
break;
case GameStates.TitleScreen:
StartUp.TitleScreen.Update(gameTime);
break;
case GameStates.Options:
break;
case GameStates.Credits:
break;
}
#endregion
#region Image Resize
if (resize.change == true)
{
resize.change = false;
resize.continueHeight = resize.size * StartUp.Images.Continue.Height;
resize.continueWidth = resize.size * StartUp.Images.Continue.Width;
StartUp.TitleScreen.con = new Rectangle(330, 246, resize.continueWidth, resize.continueHeight);
}
#endregion
base.Update(gameTime);
}
You'll have to initialize the field in the constructor. 您必须在构造函数中初始化该字段。
public class MyClass
{
private int _size = 1;
private int _backgroundWidth;
public MyClass()
{
//TODO: initialize 'Images'
_backgroundWidth = _size * Images.Background.Width;
}
}
As per the MSDN documentation : 根据MSDN文档 :
A variable initializer for an instance field cannot reference the instance being created.
实例字段的变量初始化器无法引用正在创建的实例。
which means you cant do something like this: 这意味着你不能做这样的事情:
private int _backgroundWidth = this._size * this._something;
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