Question

我想从entitydatasource获得完整的下拉列表但是＆gt;＆gt;＆gt;

我有一个问题

CommandText="SELECT d.[firstName] FROM DentistEntities.Doctors AS d WHERE d.[id] IN (SELECT s.[doctorID] FROM DentistEntities.DoctorsOfSections AS s WHERE s.[sectionID] = 2)"

这是我的asp代码

<asp:DropDownList ID="doctorlist" runat="server" Width="172px" DataSourceID="EntityDataSource2" DataTextField="firstName" DataValueField="firstName">
</asp:DropDownList>
<asp:EntityDataSource ID="EntityDataSource2" runat="server" ConnectionString="name=DentistEntities" DefaultContainerName="DentistEntities" CommandText="SELECT d.[firstName] FROM DentistEntities.Doctors AS d WHERE d.[id] IN (SELECT s.[doctorID] FROM DentistEntities.DoctorsOfSections AS s WHERE s.[sectionID] = 2)">
</asp:EntityDataSource>

但是当我编译时我有这个错误

元素类型＆＃39; Edm.Int32＆＃39;和CollectionType＆＃39; Transient.collection [Transient.rowtype（doctorID，Edm.Int32（Nullable = True，DefaultValue =））]＆＃39;不兼容。 IN表达式仅支持实体，标量和引用类型。在WHERE谓词附近，第1行，第69列。

任何帮助

谢谢

Answer 1

任何有同样问题的人都可以尝试这一点（请注意子选择中的＆＃39; VALUE＆＃39;关键字）：

CommandText="SELECT d.[firstName] FROM DentistEntities.Doctors AS d WHERE d.[id] IN (SELECT VALUE s.[doctorID] FROM DentistEntities.DoctorsOfSections AS s WHERE s.[sectionID] = 2)"

如何在where子句中使用entitydatasource使用in语句

1 个答案: