CodeGo.net>如何从实体框架获得架构的名称?
作者:互联网
我有以下代码
using (WdmEntities context = new WdmEntities())
{
//get object models from context
ObjectContext objContext = ((IObjectContextAdapter)context).ObjectContext;
var container = objContext.MetadataWorkspace.GetEntityContainer(objContext.DefaultContainerName, DataSpace.CSpace);
List<string> schemas = new List<string>();
foreach (var set in container.BaseEntitySets)
{
foreach (var metaproperty in set.MetadataProperties)
{
//here
if(metaproperty.Name == "Schema")
{
//but metaproperty.Value == NULL
schemas.Add(metaproperty.Value);
}
}
}
}
我得到空值而不是模式名称.我如何从实体框架中获取Shemas的名称. (在我的数据库中,我有两个不同的shemas.)也许有人知道另一种方式?
解决方法:
我的方法错误.下面的代码说明了我如何获得方案的名称.
using (WdmEntities context = new WdmEntities())
{
//get object models from context
ObjectContext objContext = ((IObjectContextAdapter)context).ObjectContext;
//get all full names types from object model
var fullNameTypes = objContext.MetadataWorkspace.GetItems<EntityType>(DataSpace.OSpace);
///////////////////
var conStr = objContext.Connection.ConnectionString;
var connection = new EntityConnection(conStr);
var workspace = connection.GetMetadataWorkspace();
var entitySets = workspace.GetItems<EntityContainer>(DataSpace.SSpace).First().BaseEntitySets;
for (int i = 0; i < fullNameTypes.Count; i++)
{
Type type = Type.GetType(fullNameTypes[i].FullName);
string schema = entitySets[type.Name].MetadataProperties["Schema"].Value.ToString();
}
}
标签:datacontext,objectcontext,c,entity-framework 来源: https://codeday.me/bug/20191122/2062774.html