C# 输出标签仅显示我要显示的部分内容
我有一个程序,我正在为课堂工作,我想问题在于我的if语句。当我运行程序并进行选择并单击“总计”按钮时,我会在订单标签中显示“您的开胃菜、主菜和甜点”,并在订单总计标签中显示牛排晚餐的价格。我想我可能不得不使用switch语句,但我不确定任何建议是否会有很大帮助,谢谢C# 输出标签仅显示我要显示的部分内容,c#,C#,我有一个程序,我正在为课堂工作,我想问题在于我的if语句。当我运行程序并进行选择并单击“总计”按钮时,我会在订单标签中显示“您的开胃菜、主菜和甜点”,并在订单总计标签中显示牛排晚餐的价格。我想我可能不得不使用switch语句,但我不确定任何建议是否会有很大帮助,谢谢 namespace Restaurant { public partial class frmRestaurant : Form { decimal AppetizerPrice = 0.0m; deci
namespace Restaurant
{
public partial class frmRestaurant : Form
{
decimal AppetizerPrice = 0.0m;
decimal EntreePrice = 0.0m;
decimal DessertPrice = 0.0m;
decimal total = 0.0m;
string AppetizerOrder = "", EntreeOrder = "", DessertOrder = "", order = "";
public frmRestaurant()
{
InitializeComponent();
}
private void exitToolStripMenuItem_Click(object sender, EventArgs e)
{
Application.Exit();
}
private void btnTotal_Click(object sender, EventArgs e)
{
CalculateTotal();
Order();
lblOrder.Text = order;
lblTotal.Text = total.ToString();
}
private void grpAppetizer_Enter(object sender, EventArgs e)
{
if (radCheeseSticks.Checked)
{
AppetizerPrice = 5.99m;
AppetizerOrder = "Cheese Sticks";
}
else if (radGarlicBread.Checked)
{
AppetizerPrice = 4.50m;
AppetizerOrder = "Garlic Bread";
}
else if (radChipsnSalsa.Checked)
{
AppetizerPrice = 3.50m;
AppetizerOrder = "Chips and Salsa";
}
}
private void grpEntree_Enter(object sender, EventArgs e)
{
if (radSteakDinner.Checked)
{
EntreePrice = 12.50m;
EntreeOrder = "Steak Dinner";
}
else if (radChickenParm.Checked)
{
EntreePrice = 10.99m;
EntreeOrder = "Chicken Parmigiana";
}
else if (radChipsnSalsa.Checked)
{
EntreePrice = 3.50m;
EntreeOrder = "Chips and Salsa";
}
}
private void grpDessert_Enter(object sender, EventArgs e)
{
if (radSteakDinner.Checked)
{
DessertPrice = 12.50m;
DessertOrder = "Steak Dinner";
}
else if (radChickenParm.Checked)
{
DessertPrice = 10.99m;
DessertOrder = "Chicken Parmigiana";
}
else if (radChipsnSalsa.Checked)
{
DessertPrice = 3.50m;
DessertOrder = "Chips and Salsa";
}
}
public decimal CalculateTotal()
{
total = AppetizerPrice + EntreePrice + DessertPrice;
return total;
}
public string Order()
{
order = AppetizerOrder + "for your appetizer," + EntreeOrder + "for your entree, and " + DessertOrder + "for dessert";
return order;
}
}
}
我认为该事件对您的用例没有用处。enter事件在控件激活期间调用,但在值更改时不会调用
解决问题的一种方法是只在单击“总计”按钮时设置开胃菜/主菜/甜点的价格和文本。您现在不需要在当前表单中使用它
另一种修复方法是使用正确的事件:只需处理所有这些单选按钮的事件,例如:
private void radGarlicBread_CheckedChanged(object sender, EventArgs e)
{
if (radGarlicBread.Checked)
{
AppetizerPrice = 4.50m;
AppetizerOrder = "Garlic Bread";
}
}
Debug.WriteLine("grpDesert_Enter");
Debug.WriteLine(radSteakDinner.Checked);
Debug.WriteLine(radChickenPark.Checked);
Debug.WriteLine(radChipsnSalsa.Checked);
首先,您可能希望使用
String.Format()
,因为它看起来比一堆串联要干净一点——它还可以帮助您发现这里缺少空格之类的问题(您的输出看起来像是,例如“您的开胃菜的薯片和沙拉…”)
在Order
方法中,最好只查找选中的项目,而不是在用户每次检查时更新它
我不确定出了什么问题,但也许每次调用Enter()
方法时都可以执行Debug.WriteLine()
例如:
private void radGarlicBread_CheckedChanged(object sender, EventArgs e)
{
if (radGarlicBread.Checked)
{
AppetizerPrice = 4.50m;
AppetizerOrder = "Garlic Bread";
}
}
Debug.WriteLine("grpDesert_Enter");
Debug.WriteLine(radSteakDinner.Checked);
Debug.WriteLine(radChickenPark.Checked);
Debug.WriteLine(radChipsnSalsa.Checked);
我更改了事件处理程序并做了一些其他更改,程序运行并计算总数。它可能不漂亮,但确实有用,谢谢你的帮助。