我在<ComboBox
Name="LeaderTextBox"
Grid.Column="6"
Grid.Row="2"
MinWidth="150"
SelectedItem="{Binding Path=ProjectLeader}"
DisplayMemberPath="Name" Margin="5"
/>
上遇到数据绑定问题。组合框不显示最初设置的项目。
我的.xaml：
ItemSource在代码中，我设置了LeaderTextBox.ItemsSource = service.GetAllEmployee();
，如下所示：
service.GetAllEmployee() ProjectLeader返回一个列表/数组的员工，它们也被填充到组合框中，这意味着我可以选择它们。
我的问题是，如果我为[Serializable]
[DataContract(Namespace = "Shared", IsReference = true)]
public class Employee
{
public Employee()
{
this.Projects = new List<Project>();
}
[DataMember]
public int? ID { get; set; }
[DataMember]
public String Name { get; set; }
[DataMember]
public String JobDescription { get; set; }
[DataMember]
public String Department { get; set; }
[DataMember]
public String DirectDialing { get; set; }
[DataMember]
public bool Status { get; set; }
[DataMember]
public virtual Project LeaderOfProject { get; set; }
[DataMember]
public virtual List<Project> Projects { get; set; }
public override string ToString()
{
return ID + " " + Name + " " + JobDescription + " " + Department + " " + DirectDialing;
}
}
[Serializable]
[DataContract(Namespace = "Shared", IsReference = true)]
public class Project
{
public Project()
{
this.EmployeesWorkingOnProject = new List<Employee>();
this.ProjectSteps = new List<ProjectStep>();
}
[DataMember]
public int? ID { get; set; }
[DataMember]
public String Titel { get; set; }
[DataMember]
public DateTime StartDate { get; set; }
[DataMember]
public DateTime EndDate { get; set; }
[DataMember]
public String Description { get; set; }
[DataMember]
public Employee ProjectLeader { get; set; }
[DataMember]
public bool Status { get; set; }
[DataMember]
public virtual List<Employee> EmployeesWorkingOnProject { get; set; }
[DataMember]
public virtual List<ProjectStep> ProjectSteps { get; set; }
public override string ToString()
{
return ID +" "+ Titel+" "+StartDate+ " "+ EndDate +" "+ Description;
}
}
设置了值，则不会显示。我在那里错过了什么？
参考模型：
ON DELETE答案 0 :(得分：0)
您无法通过不在组合框中的项目选择组合框的项目。
右：
private void Button_Click(object sender, RoutedEventArgs e)
{
var paul = new Employee { Name = "Paul" };
LeaderTextBox.ItemsSource = new List<Employee>()
{
new Employee {Name = "Bob" },
paul,
new Employee {Name = "Alex" },
};
ProjectLeader = paul;
}
错：
private void Button_Click(object sender, RoutedEventArgs e)
{
LeaderTextBox.ItemsSource = new List<Employee>()
{
new Employee {Name = "Bob" },
new Employee { Name = "Paul" },
new Employee {Name = "Alex" },
};
ProjectLeader = new Employee {Name = "Paul" };
}