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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