Question

我使用Return

的新实例创建了Return类

但我得到一个错误，说当前上下文中不存在Totalcost

变量TotalCost保存在另一个名为Cost

的类中

那么如何将Cost类中TotalCost中保存的内容导入Return类以与输出一起使用

public void btnCalculate_Click(object sender, EventArgs e) 
{
    //Write all details to a text file that is created on the desktop
    Return newTextFile = new Return();   
    {
        txtTotalCost.Text = ("£" + TotalCost.ToString());
    }

    newTextFile.EventDetailsFile = "C:\\AllUsers\\User\\Desktop\\EventDetails.txt";
    System.IO.StreamWriter objWriter;

    objWriter = new System.IO.StreamWriter(newTextFile.EventDetailsFile);

    objWriter.Write("Event Type:" + EventList.SelectedItem + "\n");
    objWriter.Write("Event Name:" + txtEventName.Text + "\n");
    objWriter.Write("Customer Name:" + txtName.Text + "\n");
    objWriter.Write("Customer Address:" + txtAddress.Text + "\n");
    objWriter.Write("Event Start Date:" +txtStart.Text + "\n");
    objWriter.Write("Event End Date:" + txtEnd.Text + "\n");
    objWriter.Write("Number of People Attending:" + txtPeople.Text + "\n");
    objWriter.Write("Total Event Cost: £" + TotalCost);
    objWriter.Close();

    MessageBox.Show("The text file has been Created");
}

课程成本中的代码如下

class Cost
{
    public int TotalCost;
    public int Event;
    public int personalEvent;
    public int organisationalEvent;
}

Answer 1

那么如何在EventCost中获取TotalCost中的内容？

如果EventCost不是静态类，则应该有EventCost类型的对象，我们称之为enentCost。然后你可以将EventCost作为

eventCost.TotalCost

否则，如果EventCost是一个静态类，至少对我来说没有任何意义，你可以将EventCost作为

EventCost.TotalCost

Answer 2

好的，从你的代码我可以看到你需要一个Cost类的实例，在这里：

if/else

此外，您需要检查您的类命名空间是否可以从方法btnCalculate_Click访问，例如，类Cost在命名空间Project.Totals中，这里有一些代码：

public void btnCalculate_Click(object sender, EventArgs e) 
{
    var cost = new Cost();

“总成本”这个名称在当前上下文中不存在

2 个答案: