LINQ Select 多列作为组合框 C# 的数据源

Question

我有一个组合框，其中必须包含来自（Client table）的拥有房产（Estate table）的客户列表。 table 都包含 ClientID 字段。我想从 Estate table 获取 ClientID 作为 ValueMember，从 Client table 获取 Client Name 作为组合框的 DisplayMember，如下所示：

        ClientComboBox.DataSource = ownerQuery;
        ClientComboBox.DisplayMember = "ClientName";
        ClientComboBox.ValueMember = "ClientID";

我有一个只给我 ClientName 的查询：

 var ownerQuery = (from own in AgencyContext.Client
            join clName in AgencyContext.Estate on own.ClientID equals clName.ClientID
            select own.ClientName);

如何从一个查询中获取 ClientID 和 ClientName 作为 Combobox 的源。

Answer 1

变化：

var ownerQuery = (from own in AgencyContext.Client
            join clName in AgencyContext.Estate on own.ClientID equals clName.ClientID
            select own.ClientName);

收件人：

var ownerQuery = (from own in AgencyContext.Client
            join clName in AgencyContext.Estate on own.ClientID equals clName.ClientID
            select own);

Answer 2

使用匿名类型：

 var qry = (from client in AgencyContext.Client
            join estate in AgencyContext.Estate on client.ClientID equals estate.ClientID
            select new 
            {
                ClientId = estate.ClientId,
                ClientName = client.ClientName
            });

你可以这样使用：

    ClientComboBox.DataSource = qry;
    ClientComboBox.DisplayMember = qry.First().ClientName;
    ClientComboBox.ValueMember = qry.First().ClientId;

LINQ Select 多列作为组合框 C# 的数据源

LINQ Select mutiply columns as data source for combobox C#

c#

linq

combobox

entity-framework

winforms