C# using System.Data.Metadata.Edm

Question

I am trying to use EntityType class, but I get an error when I try to use it. I did some digging and it appears I need to use this System.Data.Metadata.Edm.

I tried this...

using System.Data.

and I enter the . Metadata does not appear as an option....any suggestions

I am new at this.

I am using .NET Framework 3.5

have you ever found a solution? I have the same issue for .net 4.0. System.Data.Entity.dll is referenced, but "using System.Data.Metadata.Edm;" doesn't work. — magicandre1981
– magicandre1981, Commented Jul 9, 2013 at 8:55

ross · Accepted Answer · 2014-10-09 07:02:25Z

17

if you use EF6, you should using System.Data.Entity.Core.Metadata.Edm.

answered Oct 9, 2014 at 7:02

ross

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Bruno Costa · Accepted Answer · 2012-08-15 19:10:25Z

7

You need to add the reference System.Data.Entity.dll.

You can also check which assembly is need to some class in msdn

For example, for the EntityType:

http://msdn.microsoft.com/en-us/library/system.data.metadata.edm.entitytype.aspx

And you will see there the information about the assembly:

Assembly: System.Data.Entity (in System.Data.Entity.dll)

answered Aug 15, 2012 at 19:10

Bruno Costa

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3 Comments

user1269625 Over a year ago

I add the reference, but it still does not show MetaData or Entity or anything. Do I have to restart the program?

user1269625 Over a year ago

how do I find that out? When I say I am new, I mean new new

Bruno Costa Over a year ago

Ok, you need to give us some more information. How did you add the reference? By using the "Add reference..." option? What are you trying to do with it? I believe it should work also on 3.5, but the link I gave you was based on version 4.0.

Magnus · Accepted Answer · 2012-08-15 19:10:24Z

4

Make sure you have referenced System.Data.Entity.dll in your project.

answered Aug 15, 2012 at 19:10

Magnus

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1 Comment

user1269625 Over a year ago

I add the reference, but it still does not show MetaData or Entity or anything. Do I have to restart the program?

Bond Zini · Accepted Answer · 2015-08-11 09:08:51Z

0

If you're using EF6, then you need to add a reference to System.Data.Entity.dll

After than you must include the namespace System.Data.Entity.Core

Basically, from EF6 all classes in System.Data have been moved to System.Data.Entity.Core.

answered Aug 11, 2015 at 9:08

Bond Zini

1

Comments

arpit rai · Accepted Answer · 2019-09-02 11:41:01Z

0

Please use the following namespace if you are upgrading from EF5 to EF6 Replace System.Data.Metadata.Edm.RelationshipMultiplicity with System.Data.Entity.Core.Metadata.Edm.RelationshipMultiplicity, need not change anything else apart from above because it solves my problem

answered Sep 2, 2019 at 11:41

arpit rai

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