如何從一個類調用方法到另一個類

Question

我需要調用一些方法從一個類到另一個類在C＃中。它不同於其他答案，因爲我似乎找不到具體的答案，我正在尋找。

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

namespace IT2127P2_150538B 
{ 
public partial class InputForm : Form 
{ 
    const double cupCakePrice = 1.50; 
    int noOfCupcakes, loyaltyPoints; 
    double TotalPrice; 
    int[] price = new int[15]; 
    public InputForm() 
    { 
     InitializeComponent(); 
    } 

    private void textBox1_TextChanged(object sender, EventArgs e) 
    { 

    } 

    private void textBox2_TextChanged(object sender, EventArgs e) 
    { 

    } 

    private void label1_Click(object sender, EventArgs e) 
    { 

    } 

    private void button1_Click(object sender, EventArgs e) 
    { 
     Form Summaryform = new SummaryForm(); 
     Summaryform.ShowDialog(); 

     noOfCupcakes = int.Parse(txtNoOfCupcakes.Text); 
     TotalPrice = noOfCupcakes * cupCakePrice; 
     if (txtMemId.Text != "") 
     { 
      if (noOfCupcakes/2 > 0) 
      { 
       loyaltyPoints = (((noOfCupcakes - 1)/2) * 3) + 1; 

      } 
      else 
      { 
       loyaltyPoints = (noOfCupcakes/2) * 3; 
      } 
     } 
     else 
      { 
      loyaltyPoints = 0; 
      } 
     } 
    } 
} 
} 

上面的代碼是計算完成的主要類。現在我必須在下面的代碼中顯示紙杯蛋糕的數量，忠誠度積分和總蛋糕價格。我的問題是，我似乎無法找到一種方法將主要類中的變量調用到次要類中。

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

namespace IT2127P2_150538B 
{ 
public partial class SummaryForm : Form 
{ 
    const double cupcakePrice = 1.50; 
    public SummaryForm() 
    { 
     InitializeComponent(); 
    } 

    private void SummaryForm_Load(object sender, EventArgs e) 
    { 

    } 

    private void button1_Click(object sender, EventArgs e) 
    { 
     this.Close(); 
    } 




} 
} 

Answer 1

假設您所呼叫的「SummaryForm」至「InputForm」，然後簡單地重載第二類即SummaryForm的構造，並通過它傳遞的信息。即

public SummaryForm(double dblCupcakes, int intLoyaltyPoints, int intTotalCupcakePrice) 
{ 
    InitializeComponent(); 
} 

然後在InputForm類中創建對象時使用此構造函數。

希望這有助於

Answer 2

你有兩個選擇，要麼通過SummaryForm construtor值傳遞。

public SummaryForm(int cupcakes, int loyaltypoints, double totalprice) 

或者確保你的變量是公共靜態的。然後你可以得到他們的價值。

// InputForm class. 
public static int noOfCupcakes, loyaltyPoints; 
public static double TotalPrice; 

// SummaryForm class. 
InputForm.noOfCupcakes; 
InputForm.loyaltyPoints; 
InputForm.TotalPrice;