C Visual Studio如何将值从子类传递到父类？

c# visual studio how to pass value from subclass to parent class?

我在这里是新的，在Visual Studio的C编程中也是新的。

目前我有一个关于C重构的任务。

这是原始班

计算器

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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 HUANG_Kai_30077528_Assign1
{
public partial class calculator : Form
{

public calculator()
{
InitializeComponent();
}

private void radioButton1_CheckedChanged(object sender, EventArgs e)
{

}

private void calorieCalculation()
{
if (rbtnMale.Checked)
{
txtCalories.Text = (66
+ (6.3 * Convert.ToDouble(txtWeight.Text))
+ (12.9 * ((Convert.ToDouble(txtFeet.Text) * 12)
+ Convert.ToDouble(txtInches.Text)))
- (6.8 * Convert.ToDouble(txtAge.Text))).ToString();
}
else
{
txtCalories.Text = (655
+ (4.3 * Convert.ToDouble(txtWeight.Text))
+ (4.7 * ((Convert.ToDouble(txtFeet.Text) * 12)
+ Convert.ToDouble(txtInches.Text)))
- (4.7 * Convert.ToDouble(txtAge.Text))).ToString();
}
}

private void weightCalculation()
{
double maleVariable = 50;
double femaleVariable = 45.5;
double Formula = (2.3 * (((Convert.ToDouble(txtFeet.Text) - 5) * 12) + Convert.ToDouble(txtInches.Text)));

if (rbtnMale.Checked)
{
txtIdealWeight.Text = ((maleVariable + Formula) * 2.2046).ToString();
}
else
{
txtIdealWeight.Text = ((femaleVariable + Formula) * 2.2046).ToString();
}
}

private void txtFeetValidation()
{
double feet;
if (!double.TryParse(txtFeet.Text, out feet))
{
MessageBox.Show("Feet must be a numeric value.");
txtFeet.Select();
if (!(Convert.ToDouble(txtFeet.Text) >= 5))
{
MessageBox.Show("Height has to be equal to or greater than 5 feet!");
txtFeet.Select();
return;
}
}
}

private void txtInchesValidation()
{
double inches;
if (!double.TryParse(txtInches.Text, out inches))
{
MessageBox.Show("Inches must be a numeric value.");
txtInches.Select();
return;
}
}

private void txtWeightValidation()
{
double weight;
if (!double.TryParse(txtWeight.Text, out weight))
{
MessageBox.Show("Weight must be a numeric value.");
txtWeight.Select();
return;
}
}

private void txtAgeValication()
{
double age;
if (!double.TryParse(txtAge.Text, out age))
{
MessageBox.Show("Age must be a numeric value.");
txtAge.Select();
return;
}
}

private void btnCalculate_Click(object sender, EventArgs e)
{
txtFeetValidation();
txtInchesValidation();
txtWeightValidation();
txtAgeValication();

//Clear old results
txtIdealWeight.Text ="";
txtCalories.Text ="";
calorieCalculation();
weightCalculation();
}

private void label8_Click(object sender, EventArgs e)
{

}

private void btnExit_Click(object sender, EventArgs e)
{
Application.Exit();
}

private void Form1_Load(object sender, EventArgs e)
{

}

private void btnAddPatient_Click(object sender, EventArgs e)
{
if (!String.IsNullOrEmpty(txtIdealWeight.Text))
{
Form secondForm = new patientInfo(this);
secondForm.Show();

}
else
{
MessageBox.Show("Please enter all datas and click on 'Add Patient' to add patient's records");
}

}

private void btnPatientList_Click(object sender, EventArgs e)
{
Form secondForm = new patientList(this);
secondForm.Show();
}

private void btnClear_Click(object sender, EventArgs e)
{
rbtnMale.Checked = false;
rbtnFemale.Checked = false;
txtFeet.Text ="";
txtInches.Text ="";
txtWeight.Text ="";
txtAge.Text ="";
txtCalories.Text ="";
txtIdealWeight.Text ="";

}

private void groupBox1_Enter(object sender, EventArgs e)
{

}
}
}

下面的类是我要设置的父类和子类。

父级：calculator.cs

子类：malecalculation.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace HUANG_Kai_30077528_Assign1
{
class maleCalculator: calculator
{
//private string maleCaloriesCalculation;
//private string maleWeightCalculation;

public maleCalculator maleCalories()
{
(66 + (6.3 * Convert.ToDouble(txtWeight.Text))
+ (12.9 * ((Convert.ToDouble(txtFeet.Text) * 12)
+ Convert.ToDouble(txtInches.Text)))
- (6.8 * Convert.ToDouble(txtAge.Text))).ToString();

return maleCalories();
//this.txtCalories.Text = new maleCalculator.maleCalories;
}

public maleCalculator maleWeight()
{
((50 + (2.3 * (((Convert.ToDouble(txtFeet.Text) - 5) * 12)
+ Convert.ToDouble(txtInches.Text)))) * 2.2046).ToString();

return maleWeight();
}
}
}

子类：femalecalculation.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace HUANG_Kai_30077528_Assign1
{
class femaleCalculator : calculator
{
public double femaleCaloriesCalculation()
{
txtCalories.Text = (655 + (4.3 * Convert.ToDouble(txtWeight.Text))
+ (4.7 * ((Convert.ToDouble(txtFeet.Text) * 12)
+ Convert.ToDouble(txtInches.Text)))
- (4.7 * Convert.ToDouble(txtAge.Text))).ToString();

return femaleCaloriesCalculation();
}

public double femaleWeightCalculation()
{
txtIdealWeight.Text = ((45.5 + (2.3 * (((Convert.ToDouble(txtFeet.Text) - 5) * 12)
+ Convert.ToDouble(txtInches.Text)))) * 2.2046).ToString();

return femaleWeightCalculation();
}
}
}

如我们所见，这两个子类用于计算卡路里和理想体重。它们计划在原始类calculator.cs中取代private void calorieCalculation()和private void weightCalculation()。

我需要的功能如下：

当我执行程序并需要计算IdealWeight和卡路里时，父类calculator.cs将从子类中包含的公式中得到结果，并在文本框中进行字符串处理。这就是为什么在calculator.cs中有txtcolories和txtealweight。

所以问题是如何在子类中获得结果，并填充文本框？

伙计们，请帮帮我，因为这对我很重要！！

谢谢大家！！

你的意思是虚拟函数吗？如果是这样，

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class Ancestor
{
public virtual int DoSomething()
{
// execute commands here.
// for now just throw exception.
throw new NotImplementedException();
}
}

class Derived_A : Ancestor
{
public override int DoSomething()
{
return 1 + 1;
}
}

class Derived_B : Ancestor
{
public override int DoSomething()
{
return 1 + 2;
}
}

这是祖先，具有虚拟功能。有关更多信息：

虚函数在C语言中的实际应用#
http://msdn.microsoft.com/en-us/library/9fkccyh4(v=vs.80).aspx

这种类型的代码也可以通过接口来完成。请参阅http://msdn.microsoft.com/en-us/library/vstudio/ms173156.aspx。