C＃中的計數按鈕的顏色＃

Question

我在程序中遇到問題。我有3個按鈕，默認顏色是白色。當我的按鈕後退顏色變成紅色時，我的程序會計算出有多少按鈕是紅色的。我有一個主意，用的foreach，但它不工作

Button[] Tombol = new Button[]{B1, B2, B3} 
int counterbutton = 0; 

foreach (Button Tombol2.BackColor = Color.Red in Tombol) //I have problem here. I don't know how to solve 
{ 
    counterbutton++; 
} 

Answer 1

我覺得權語法;

foreach(Button btn in Tombol) 
{ 
    if(btn.BackColor == Color.Red) 
     counterbutton++; 
} 

Answer 2

Button[] Tombol = new Button[]{B1, B2, B3} 
int counterbutton = 0; 
foreach (Button btn in Tombol) //I have problem here. I don't know how to solve 
{ 
    if(btn.BackColor == Color.Red) 
    counterbutton++; 
} 

Answer 3

foreach(Button b in Tombol) 
{ 
    if(b.BackColor == Color.Red) 
     counterbutton++; 
} 

Answer 4

試試這個

using System; 
using System.Collections.Generic; 
using System.ComponentModel; 
using System.Data; 
using System.Drawing; 
using System.Linq; 
using System.Text; 
using System.Windows.Forms; 

namespace WindowsFormsApplication1 
{ 
    public partial class Form1 : Form 
    { 
     public Form1() 
     { 
      InitializeComponent(); 

      Button[] Tombol = new Button[]{B1, B2, B3}; 
      int counterbutton = 0; 
      B1.BackColor = Color.Red; 
      B3.BackColor = Color.Red; 

      foreach (Button b in Tombol) 
      { 
       if(b.BackColor == Color.Red) //I have problem here. I don't know how to solve 
       { 
        counterbutton++; 
       } 
      } 
     } 
    } 
} 

Answer 5

與LINQ的爲例：

var counter = Tombol.Count(b=>b.BackColor == Color.Red)