我正在使用Visual Studio 2015和C＃。我正在尝试根据居住类型计算学分。我有一个有计算，吸气和设定的课程。但是，当我点击计算时，它只显示0作为总数。显然，事情没有正确连接。但是，我不确定在何处或如何解决此问题。
这是我的班级档案：
namespace QuarterTuition
{
class Business
{
private int creditsTotal;
private int creditsPriceGuide;
public static double FullCost;
public Business(int credits, string residency)
{
creditsTotal = credits;
Residency = residency;
}
public double FullPrice
{
get { return FullCost; }
}
// Checking that credits is greater than zero
public static bool IsValidCreditAmount(int testValue)
{
return testValue > 0;
}
// Method for getting and setting Credit Totals.
public int CreditsTotal
{
get { return creditsTotal; }
set
{
if (IsValidCreditAmount(value))
{
creditsTotal = value;
}
else
{
throw new ApplicationException("Invalid! Credits must be greater than zero.");
}
}
}
// Method for determining which pricing section the credit amount is in.
public int CreditAmountSection
{
get { return creditsTotal; }
set
{
if (creditsTotal <= 10)
{
creditsPriceGuide = 1;
}
if (creditsTotal > 10 && creditsTotal <= 18)
{
creditsPriceGuide = 2;
}
if (creditsTotal > 18)
{
creditsPriceGuide = 3;
}
else
{
throw new ApplicationException("Invalid Credit Amount!");
}
}
}
// Checking that the string is empty
public static bool IsEmptyString(string testValue)
{
return testValue == "";
}
// Checking that the residency is not an empty string
public static bool IsValidResidency(string testValue)
{
return !IsEmptyString(testValue);
}
//variable
private string residentType;
// Method to check Residency Type
public string Residency
{
get { return residentType; }
set
{
if (IsValidResidency(value))
residentType = value;
else
throw new ApplicationException("Invalid Residency");
}
}
// 1-10 CREDITS
// Cost for 1-10 Credits
const double Resident110 = 104.11;
const double NResUS110 = 117.11;
const double NResNUS110 = 276.11;
// 11-18 CREDITS
// Cost for 11-18 Credits
const double Resident118Base = 1041.10;
const double NResUS1118Base = 1171.10;
const double NResNUS1118Base = 2761.10;
// Cost for each credit 11-18
const double Resident11218 = 51.40;
const double NResUS11218 = 52.09;
const double NResNUS11218 = 56.41;
// EXCESS CREDITS
// Cost for 19+ Credits
const double Resident18Base = 1452.30;
const double NResUS18Base = 1587.82;
const double NResNUS18Base = 3212.38;
// Cost for each credit beyond 18
const double Resident18More = 96.26;
const double NResUS18More = 96.26;
const double NResNUS18More = 268.26;
/// <summary>
/// CALCULATIONS BELOW
/// </summary>
public void ResidentCreditCost()
{
int credits = CreditAmountSection;
int credSection = CreditAmountSection;
string resType = Residency;
if (resType == "Resident")
{
if (credSection == 1)
{
FullCost = Resident110 * credits;
}
if (credSection == 2)
{
double temp = Resident118Base * 10;
int tempCred = credits - 10;
double tempAdditional = tempCred * Resident11218;
FullCost = temp + tempAdditional;
}
if (credSection == 3)
{
double temp = Resident18Base * 18;
int tempCred = credits - 18;
double tempAdditional = tempCred * Resident18More;
FullCost = temp + tempAdditional;
}
}
}
public void NonResidentUSCreditCost()
{
int credits = CreditAmountSection;
int credSection = CreditAmountSection;
string resType = Residency;
if (resType == "NResUS")
{
if (credSection == 1)
{
FullCost = NResUS110 * credits;
}
if (credSection == 2)
{
double temp = NResUS1118Base * 10;
int tempCred = credits - 10;
double tempAdditional = tempCred * NResUS11218;
FullCost = temp + tempAdditional;
}
if (credSection == 3)
{
double temp = NResUS18Base * 18;
int tempCred = credits - 18;
double tempAdditional = tempCred * NResUS18More;
FullCost = temp + tempAdditional;
}
}
}
public void NonResidentNUSCreditCost()
{
int credits = CreditAmountSection;
int credSection = CreditAmountSection;
string resType = Residency;
if (resType == "NResNUS")
{
if (credSection == 1)
{
FullCost = NResNUS110 * credits;
}
if (credSection == 2)
{
double temp = NResNUS1118Base * 10;
int tempCred = credits - 10;
double tempAdditional = tempCred * NResNUS11218;
FullCost = temp + tempAdditional;
}
if (credSection == 3)
{
double temp = NResUS18Base * 18;
int tempCred = credits - 18;
double tempAdditional = tempCred * NResNUS18More;
FullCost = temp + tempAdditional;
}
}
}
}
}
这是我的计算按钮：
private void btnCalculate_Click(object sender, EventArgs e)
{
int credits = Convert.ToInt16(tbCredits.Text);
string residency = "";
if (rbResident.Checked == true)
{
residency = "Resident";
}
if (rbNResUS.Checked == true)
{
residency = "NResUS";
}
if (rbNResNUS.Checked == true)
{
residency = "NResNUS";
}
Business bus = new Business(credits, residency);
double totalComplete = bus.FullPrice;
// Test that it is obtaining the credits
tbTotal.Text = Convert.ToString(totalComplete);
// End Test
}
如何进行计算并显示TextBox中的总学费？
答案 0 :(得分：1)
您的媒体资源FullPrice无法在您的代码中设置。
在您FullPrice的获取者中，您返回FullCost。但是这个FullCost也没有设置。
在您的代码中，您只是实例化Business类，但不计算任何内容。
您需要以下内容：
Business bus = new Business(credits, residency);
bus.ComputeCosts();
double totalComplete = bus.FullPrice;
答案 1 :(得分：0)
在Business类的构造函数中调用您的计算，并将值设置为FullCost。 FullCost应该是creditsTotal。
答案 2 :(得分：0)
你根本没有调用计算函数.Pls调用那些函数