我正在開發一個控制臺應用程式，在該應用程式中，我通過用戶輸入將成員添加到串列中。使用的邏輯是：
public class Projectlogic
{
public List<Project> Projects { get; set; } = new List<Project>();
//Add a project to the list Projects.
public void Add(Project project)
{
Projects.Add(project);
}
public List<Project> GetAllProjects()
{
return Projects;
}
}
下面給出了將專案添加到專案串列中的主程式。當我除錯代碼時，專案中的計數顯示為 0。我遺漏了哪一部分邏輯或使用不正確？
//Adding parameters PID, Name, Sdate, Edate to a project.
var newProject = new Project(PID, Name, Sdate, Edate);
var business2 = new ProjectLogic(); //declared
business2.Add(newProject);
break;
uj5u.com熱心網友回復：
請參閱我在右側的評論（縮短變數名稱以創建更多空間）：
var newProject = new Project(PID, Name, Sdate, Edate);
var b2 = new ProjectLogic(); //A new object with 0 items is created.
//A breakpoint here will ALWAYS show zero items
b2.Add(newProject); //Add the item, but the change won't show until the next line.
//Breakpoints here will also ALWAYS show 0 items.
break; //A breakpoint here will ALWAYS show ONE item.
//However, "break" will kick you out of the current scope.
//This means the business2 object also immediately goes
//out of scope and is thrown away.
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標籤：C＃
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