Entity Framework - Get Table name from the Entity
c# ef-code-first entity entity-framework modelmetadata
Question
I'm using the Entity Framework 4.1 with Code First approach. I'm able to get the storage model types and column names of my entities:
var items = context.ObjectContext.MetadataWorkspace.GetItems<EntityType>(DataSpace.SSpace);
foreach (var i in items)
{
Console.WriteLine("Table Name: {0}", i.Name);
Console.WriteLine("Keys:");
foreach (var key in i.KeyMembers)
Console.WriteLine("\t{0} ({1})", key.Name, key.TypeUsage.EdmType.FullName);
Console.WriteLine("Members:");
foreach (var member in i.Members)
Console.WriteLine("\t{0} ({1})", member.Name, member.TypeUsage.EdmType.FullName);
}
What I need is to get the real table name the entity is mapped to. There are different ways to specify that (by using Fluent-API .ToTable(), DataAnnotation [TableAttribute]).
Is there any common way to achieve this information?
Popular Answer
I use Nigel's approach (extracting table name from .ToTraceString()) but with some modifications, because his code won't work if the table is not in the default SQL Server schema (dbo.{table-name}).
I've created extension methods for DbContext and ObjectContext objects:
public static class ContextExtensions
{
public static string GetTableName<T>(this DbContext context) where T : class
{
ObjectContext objectContext = ((IObjectContextAdapter) context).ObjectContext;
return objectContext.GetTableName<T>();
}
public static string GetTableName<T>(this ObjectContext context) where T : class
{
string sql = context.CreateObjectSet<T>().ToTraceString();
Regex regex = new Regex(@"FROM\s+(?<table>.+)\s+AS");
Match match = regex.Match(sql);
string table = match.Groups["table"].Value;
return table;
}
}
More details here:
Entity Framework: Get mapped table name from an entity
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