keyword not supported data source

Question

I have an asp net-mvc application with the default membership database  I am accessing it by ADO NET Entity Framework    Now I want to move it to IIS  but several problems showed up  I had to install SQL Server Management Studio  Create new DB  import there all the data from the previous  MDF file  Only thing left to do  as far a I know  is to change to connection string  However  I am not really experienced with this and keep getting the Keyword not supported   data source   exception  Here is my connection string    lt add name  ASPNETDBEntities        connectionString  Data Source MONTGOMERY-DEV SQLEXPRESS Initial Catalog ASPNETDB Integrated Security True         providerName  System Data EntityClient    gt    Any ideas  what s wrong

User · Answer

I had this problem when I started using Entity Framework, it happened when I did not change the old SQL server connection to EntityFrameWork connection.

Solution: in the file where connection is made through web.config file "add name="Entities" connectionString=XYZ", make sure you are referring to the correct connection, in my case I had to do this

        public static string MyEntityFrameworkConnection
    {
        get
        {
             return ConfigurationManager.ConnectionStrings["Entities"].ConnectionString;
        }

    }

call MyEntityFrameworkConnection whenever connection need to be established.

private string strConnection= Library.DataAccessLayer.DBfile.AdoSomething.MyEntityFrameworkConnection;

note: the connection in web.config file will be generated automatically when adding Entity model to the solution.

User · Answer

I know this is an old post but I got the same error recently so for what it s worth  here s another solution   This is usually a connection string error  please check the format of your connection string  you can look up  entity framework connectionstring  or follow the suggestions above    However  in my case my connection string was fine and the error was caused by something completely different so I hope this helps someone    First I had an EDMX error  there was a new database table in the EDMX and the table did not exist in my database  funny thing is the error the error was not very obvious because it was not shown in my EDMX or output window  instead it was tucked away in visual studio in the  Error List  window under the  Warnings    I resolved this error by adding the missing table to my database  But  I was actually busy trying to add a stored procedure and still getting the  datasource  error so see below how i resolved it  Stored procedure error  I was trying to add a stored procedure and everytime I added it via the EDMX design window I got a  datasource  error  The solution was to add the stored procedure as blank  I kept the stored proc name and declaration but deleted the contents of the stored proc and replaced it with  select 1  and retried adding it to the EDMX   It worked  Presumably EF didn t like something inside my stored proc  Once I d added the proc to EF I was then able to update the contents of the proc on my database to what I wanted it to be and it works   datasource  error resolved    weirdness

User · Answer

What you have is a valid ADO NET connection string - but it s NOT a valid Entity Framework connection string    The EF connection string would look something like this    lt connectionStrings gt      lt add name  NorthwindEntities  connectionString        metadata   Northwind csdl   Northwind ssdl   Northwind msl        provider System Data SqlClient        provider connection string  amp quot Data Source SERVER SQL2000 Initial Catalog Northwind Integrated Security True MultipleActiveResultSets False amp quot          providerName  System Data EntityClient    gt    lt  connectionStrings gt    You re missing all the metadata  and providerName  elements in your EF connection string       you basically only have what s contained in the provider connection string part   Using the EDMX designer should create a valid EF connection string for you  in your web config or app config   Marc  UPDATE  OK  I understand what you re trying to do  you need a second  ADO NET  connection string just for ASP NET user   membership database  Your string is OK  but the providerName is wrong - it would have to be  System Data SqlClient  - this connection doesn t use ENtity Framework - don t specify the  EntityClient  for it then    lt add name  ASPNETMembership        connectionString  Data Source MONTGOMERY-DEV SQLEXPRESS Initial Catalog ASPNETDB Integrated Security True         providerName  System Data SqlClient    gt    If you specify providerName System Data EntityClient     Entity Framework connection string  with the metadata  and everything    If you need and specify providerName System Data SqlClient     straight ADO NET SQL Server connection string without all the EF additions

User · Answer

I was getting the same error  then updated my connection string as below    lt add name  EmployeeContext  connectionString  data source       initial catalog EmployeeDB integrated security True MultipleActiveResultSets True App EntityFramework  providerName  System Data SqlClient    gt    Try this it will solve your issue

User · Answer

I was getting the same problem  but this code works good try it    lt add name  MyCon  connectionString  Server      initial catalog PortalDb user id    password    MultipleActiveResultSets True   providerName  System Data SqlClient    gt

User · Answer

This problem can occur when you reference your web config  or app config  connection strings by index     var con   ConfigurationManager ConnectionStrings 0  ConnectionString    The zero based connection string is not always the one in your config file as it inherits others by default from further up the stack   The recommended approaches are to access your connection by name     var con   ConfigurationManager ConnectionStrings  MyConnection   ConnectionString    or to clear the connnectionStrings element in your config file first      lt connectionStrings gt       lt clear  gt       lt add name  MyConnection  connectionString

[asp.net] keyword not supported data source

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