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当我创建我的实体时,我导入了一个存储过程,它返回两个数据集。在研究过程中,我发现如何仅使用代码来适应此问题,而不是修改实体模型xml。我已经完成了这个,现在我的第一个数据集正确填充。我的第二个数据集正确返回1行,但值是空的。我确保对象键与存储过程返回的相同(大小写和拼写)。第二个结果集返回空值 - linq到实体
我的资源:
- Issue when trying to read multiplte entity resultsets from a stored procedure
- How to get Multiple Result Set in Entity Framework using Linq with C#?
- https://msdn.microsoft.com/en-us/library/jj691402(v=vs.113).aspx。
我的代码:
public class oEngine
{
public string Engine;
public DateTime ResultsDateTime;
}
...
// If using Code First we need to make sure the model is built before we open the connection
// This isn't required for models created with the EF Designer
ctx.Database.Initialize(force: false);
// Create a SQL command to execute the sproc
var cmd = ctx.Database.Connection.CreateCommand();
cmd.CommandText = "[dbo].[usp_IntMonDisplay]";
try
{
ctx.Database.Connection.Open();
// Run the sproc
var reader = cmd.ExecuteReader();
// Read Blogs from the first result set
reply.results = ((IObjectContextAdapter)ctx).ObjectContext.Translate<Entities.usp_IntMonDisplay_Result>(reader).ToList();
// Move to second result set and read Posts
reader.NextResult();
reply.engines = ((IObjectContextAdapter)ctx).ObjectContext.Translate<oEngine>(reader).ToList();
}
finally
{
ctx.Database.Connection.Close();
}
对这种类型的东西使用Dapper。调用存储过程时实体框架矫枉过正,而您对ExecuteReader的混合几乎毫无意义。 –