本文介绍了EntityDataSource查询内部联接的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我有3个表一个DB:
User{UserId,UserName}
Role{RoleId,RoleName}
User_Role{UserId,RoleId}
本查询:
int userIdPassByUrl = 0;
MyDbContext ctx = new MyDbContext();
var query = (from role in ctx.Role
join userRole in ctx.User_Role on role.RoleId equals userRole.RoleId
where userRole.UserId == userIdPassByUrl
select new { role.RoleId, role.RoleName }).Distinct();
我需要显示在一个EntityDataSource的GridView上面查询的结果,无论是代码或设置它在设计模式
I need to show the result of the above query in a Gridview with an EntityDataSource, either code or set it in the design mode.
这是我的EntitydataSource:
this is my EntitydataSource:
<asp:EntityDataSource ID="EdsRolesByUser" runat="server"
ConnectionString="name=myDbEntities"
DefaultContainerName="myDbEntities" EnableFlattening="False"
EntitySetName="Roles" EntityTypeFilter="Role"
Select="it.[RoleId], it.[RoleName]">
</asp:EntityDataSource>
任何帮助,将不胜感激,谢谢。
Any help would be appreciated, thanks.
推荐答案
终于得到了它。
不得不修改EntityDataSource去除EntitySetName和EntityTypeFilter
属性,并添加在CommandText是这样的:
Finally got it.Have to modified the EntityDataSource removing the EntitySetName and EntityTypeFilterattributes, and add the CommandText like this:
CommandText="SELECT DISTINCT userRole.RoleId, role.RoleName FROM Role AS role
INNER JOIN User_Role as userRole
ON role.RoleId = userRole.RoleId
WHERE userRole.UserId = @UserIdPassbyUrl"
这链接帮助我:
的
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