Question

我正在使用C＃创建WPF应用程序。我正在尝试从组合框中的List<Customer>加载项目。我做了以下事情：

 customersList = context.Customers.Where(c => c.IsDeleted == false).ToList<.Customer>().OrderBy(x => x.CustomerId);
 cmbCustomer.ItemsSource = customersList;
 cmbCustomer.DisplayMemberPath = "FirstName";
 cmbCustomer.SelectedValuePath = "CustomerId";

我能够在组合框中显示CustomerName的FirstName。 但是，我想显示名字和客户姓氏的组合。以下是我的客户实体类

[Table("Customer")]
    public class Customer
    {
        [Key]
        public int CustomerId { get; set; }
        [Column("FirstName", TypeName = "ntext")]
        [MaxLength(100)]
        public string FirstName { get; set; }
        [Column("LastName", TypeName = "ntext")]
        [MaxLength(100)]
        public string LastName { get; set; }
        [Column("Email", TypeName = "ntext")]
        [MaxLength(100)]
        public string Email { get; set; }
        [Column("Company", TypeName = "ntext")]
        [MaxLength(100)]
        public string Company { get; set; }
        [Column("Phone", TypeName = "ntext")]
        [MaxLength(100)]
        public string Phone { get; set; }
        [Column("Address", TypeName = "ntext")]
        [MaxLength(500)]
        public string Address { get; set; }
        [Column("IsDeleted", TypeName = "bit")]
        public bool IsDeleted { get; set; }
    }

Answer 1

这样做：

          var customersList = (from c in context.Customers
                                where c.IsDeleted == false
                                select new
                                {
                                    Name = c.FirstName + " " + c.LastName,
                                    c.CustomerId
                                }).ToList();

     cmbCustomer.ItemsSource = customersList;
     cmbCustomer.DisplayMemberPath = "Name";
     cmbCustomer.SelectedValuePath = "CustomerId";

我在这里写作。所以我的代码可能有错误。对不起。

Answer 2

如果您愿意编辑实体类（另一个清洁选项是拥有单独的客户视图模型类），您可以添加以下属性：

public string FullName {
   get {
      return FirstName + " " + LastName;
   }
}

然后为您的显示成员路径：

cmbCustomer.DisplayMemberPath = "FullName";

您可能还想考虑使用XAML绑定而不是手动在代码后面进行绑定，只是想一想！希望有所帮助。

WPF - 在ComboBox项中显示连续字符串

2 个答案: