使用Entity Framework 6从数据库查询中检索列表

Question

I want to return a list with entity framework

using (FinalDatabaseEntities fdb = new FinalDatabaseEntities())
{
    var result = from Port in fdb.Ports select Port.Name;
    result = result.ToList();
}

I wish to return a list or array (list preferably) and place it in my result variable

I'm getting the following error

Error CS0266 Cannot implicitly convert type 'System.Collections.Generic.List' to 'System.Linq.IQueryable'. An explicit conversion exists (are you missing a cast?) Finally!! C:\\Users\\Kudzai Mhlanga\\source\\repos\\Finally!!\\Program.cs 22 Active

Answer 1

You just need a second local variable, which also makes your code more readable, since the first line creates a "query" not a "result". So:

using (FinalDatabaseEntities fdb = new FinalDatabaseEntities())
{
    var query = from Port in fdb.Ports select Port.Name;
    var result = query.ToList();
}

Answer 2

Your Code will be :

using (FinalDatabaseEntities fdb = new FinalDatabaseEntities())
{
     var result = (from port in fdb.Ports  select port.Name).ToList();                      
}