Error 3027 Entity Framework
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Entity Framework Error 3002 Problem In Mapping Fragments
Why am I getting this error: No mapping specified for the following EntitySet/AssociationSet - Entity1? up vote 60 down vote favorite 8 I'm using Entity Framework 4 with the Model First approach. I started the project, designed the entities and generated the database. Everything worked fine. Then I needed to go back and add another entity to my model. However, as I drag entity framework error 26 - error locating server/instance specified an entity to the EDMX I get this error: Alright! I just need to map Entity1 to a table.. But hey! I'm using Model First approach, I expect it to create the table for me when I generate the DDL. How do I work around this error? .net entity-framework entity-framework-4 share|improve this question edited Feb 10 '13 at 4:41 asked Apr 14 '11 at 17:47 andrerpena 16.3k1983136 So can generate database script from your model? –Ladislav Mrnka Apr 14 '11 at 18:42 add a comment| 11 Answers 11 active oldest votes up vote 98 down vote accepted This is because of the way EF4 works with model-first. When you first create a model-first model, it's in a state that the SSDL does not exist. You can drag entities, associate them and so forth and yet, if you take a look at the SSDL on the EDMX file, you will see that none of the entities have an associated storage table in the SSDL. That changes when you click the Generate Database From Model context menu item. The confusing part is that this action does more
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Entity Framework Error 11007 Entity Type Is Not Mapped
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Entity Framework Error 3032
it only takes a minute: Sign up How do I correctly set an association between two objects in the Entity Framework 4 Entitydesigner? up vote 54 down vote favorite 6 For a new project I'm trying to create my http://stackoverflow.com/questions/5667355/why-am-i-getting-this-error-no-mapping-specified-for-the-following-entityset-as business classes first and create the real database tables later. Therefore I'm using the Entity Framework 4 Designer. A created a new "ADO.Net Entity Data model" file, with the extension .edmx. I created two Entities: I want to add a 1 to nc relation between Product -> Group. If I'd created the MSSQL database first, I would have added a column IDGroup to the Table Product and referenced Product.IDGroup to Group.IDGroup. As far as I can see, I can't http://stackoverflow.com/questions/3700637/how-do-i-correctly-set-an-association-between-two-objects-in-the-entity-framewor add such association in the designer if I add a new Property called IDGroup to the Product Entity This is how I add the mapping: Which results in: Now the part what this question is about: If I add two tables from an existing MSSQL database to the edmx file, I'll get the compile error: Error 3027: No mapping specified for the following EntitySet/AssociationSet - GroupSet, ProductSet What does that error mean and what must I do to fix this? If I delete those two tables, I'll receive a warning instead: Error 2062: No mapping specified for instances of the EntitySet and AssociationSet in the EntityContainer myContainer. Something tells me, I'm doing this all wrong and this is just basic stuff. How can I do it right? c# asp.net entity-framework-4 share|improve this question asked Sep 13 '10 at 13:04 citronas 9,5111668131 1 +1 Thanks for asking this one, I routinely forget to do this. –Jon Dewees Aug 3 '11 at 16:36 add a comment| 6 Answers 6 active oldest votes up vote 82 down vote accepted I just ran into this myself & when I Googled it (I hit your question). I was able to double click on the line (association line) in the designer. Fill in the properties there and I got it working. I also had to close VS and re-open it to get some of the errors reported to go away... Can'
ASP.NET Community Standup Forums Help Home/ASP.NET Forums/General ASP.NET/Getting Started/Error 3027: No mapping specified for the following EntitySet/Associat... Error http://forums.asp.net/t/1826028.aspx?Error+3027+No+mapping+specified+for+the+following+EntitySet+AssociationSet 3027: No mapping specified for the following EntitySet/AssociationSet [Answered]RSS 2 replies Last post Apr 13, 2013 10:45 AM by DilshodN ‹ Previous Thread|Next Thread › Print Share http://issuesdotnet.blogspot.com/2012/08/no-mapping-specified-for-following.html Twitter Facebook Email Shortcuts Active Threads Unanswered Threads Unresolved Threads Support Options Advanced Search Reply balamsc Member 57 Points 114 Posts Error 3027: No mapping specified for entity framework the following EntitySet/AssociationSet Jul 20, 2012 06:34 AM|balamsc|LINK HI, " Error 3027: No mapping specified for the following EntitySet/AssociationSet" while mapping two tables in .edmx file Thanks in Advance, Balaji.J Please mark this as answer if solved the question, Best Regards, Balaji.J Reply DarrellNorto... All-Star 66183 Points 10249 Posts ModeratorMVP Re: Error entity framework error 3027: No mapping specified for the following EntitySet/AssociationSet Jul 20, 2012 10:50 AM|DarrellNorton|LINK Either you don't have the tables in the database that are specified in the error message, or there is no mapping to the tables in the EDMX. Add the tables to the database, or remove and then re-add the tables to the EDMX to fix the mapping issue. Darrell Norton, MVP Darrell Norton's Blog Please click "Mark as Answer" if this helped you. Reply DilshodN None 0 Points 1 Post Re: Error 3027: No mapping specified for the following EntitySet/AssociationSet Apr 13, 2013 10:45 AM|DilshodN|LINK Hi Darrell, I am using EF to SQLite database. I tried to generate model from database and works fine, but when I add Assocciation between tables I am getting error: Error 3027: No mapping specified for the following EntitySet/Asso.... As you said I removed all the tables and readded to EDMX model. No sucess. I am using .NET 4.5. What shou
can get this error when you have generated your Entity Model from a database. This error means that due to any issue (update/delete etc) the Entity mappings are not same as the Database. Solution There can be seen many solutions to this problem over internet but the best solution as far as I know is 1. Double Click the edmx file to open the Entity Model in design view. 2. Press Ctrl A to select all objects within Entity Model. 3. Now press Delete to delete all objects. 4. Again generate your Entity model from Database using "Update Model from Database" option given in context menu (Right Click). 5. All done. Hope this will help. Happy Coding :) Posted by AmazingOrFunny at 1:12 AM Labels: AssociationSet, C#, CSharp, database, edmx, entity, entity framework, entity model, EntitySet, mapping, VB, Vb.Net 5 comments: AnonymousMarch 16, 2013 at 1:27 AMrealy good soltion to generate all complex type againReplyDeletethuc nguyen MinhOctober 12, 2013 at 1:35 AMthank you so much, very usefull postReplyDeleteAnonymousOctober 20, 2013 at 10:55 PMThanks Dude.... it worked.ReplyDeleteAnonymousNovember 13, 2013 at 2:27 PMAwesome... thanks.ReplyDeleteKO ObiMarch 9, 2016 at 1:43 PMExcellent Solution. Saved me more hours troubleshooting this stuff. Thanks.ReplyDeleteAdd commentLoad more... Newer Post Older Post Home Subscribe to: Post Comments (Atom) Feedjit Live Blog Stats July (1) March (2) December (2) September (1) August (1) June (3) December (1) September (1) February (1) January (1) October (3) August (4) July (8) June (3) May (1) Popular Posts URL Rewriting (making user Friendly URLs) The Problem: At number of occasions we need a user friendly URL instead of a messy URL having the query string variables. Like we may b... Validation of viewstate MAC failed Yet another very teasing issue ASP .Net developers face. Solution is pretty much simple. Add following link in your web.config file. <... Disable Next Previous Months (including all dates other than Current Month) in ASP .Net Calendar Control Often we need ASP .Net calendar control in our webpages. Most of the times we require navigation in between dates of the calendar control bu... Disable browser back button Sometimes we