An error occurred while executing the command definition. See the inner exception for details

In my mvc asp.net application, I am getting an error in edit function : in given code

public ActionResult Edit(int id)
{

      var res = (from r in objeEntities.DocumentationsSet.Include("DocStatus")
                where r.textid == id select r)
    开发者_Python百科            .First();
}

I am getting this exception:

Source : System.Data.Entity

Stack Trace : 
at System.Data.EntityClient.EntityCommandDefinition.ExecuteStoreCommands(EntityCommand entityCommand, CommandBehavior behavior) 
at System.Data.Objects.Internal.ObjectQueryExecutionPlan.Execute[TResultType](ObjectContext
   context, ObjectParameterCollection parameterValues) 
at System.Data.Objects.ObjectQuery`1.GetResults(Nullable`1 forMergeOption) 
at System.Data.Objects.ObjectQuery`1.System.Collections.Generic.IEnumerable.GetEnumerator()
at System.Linq.Enumerable.First[TSource](IEnumerable`1 source)
at System.Data.Objects.ELinq.ObjectQueryProvider.b__0[TResult](IEnumerable`1 sequence) 
at System.Data.Objects.ELinq.ObjectQueryProvider.ExecuteSingle[TResult](IEnumerable`1 query, Expression queryRoot)
at System.Data.Objects.ELinq.ObjectQueryProvider.System.Linq.IQueryProvider.Execute[S](Expression expression)
at System.Linq.Queryable.First[TSource](IQueryable`1 source)
at admin.com.Controllers.DocsGridController.Edit(Int32 id) in c:\Data\FinalCode\AC015\acomMVCSourceCode\admincom\Controllers\DocsController.cs:line
   307

Message : An error occurred while executing the command definition. See the inner exception for details.

This error is generated when I connect with remote server.

What is this error? How do I fix it?

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Usually this means that your schema and mapping files are not in synch and there is a renamed or missing column someplace.

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After spending hours, I found that I missed 's' letter in table name

It was [Table("Employee")] instead of [Table("Employees")]

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This occurs when you specify the different name for repository table name and database table name. Please check your table name with database and repository.

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In my case, I messed up the connectionString property in a publish profile, trying to access the wrong database (Initial Catalog). Entity Framework then complains that the entities do not match the database, and rightly so.

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I had a similar situation with the 'An error occurred while executing the command definition' error. I had some views which were grabbing from another db which used current user security. The second db did not allow the login for the user of the first db causing this issue to occur. I added the db login to the server it was trying to get to from the original server and this fixed the issue. Check your views and see if there are any linked dbs which have different security than the db you are logging onto originally.

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Does the actual query return no results? First() will fail if there are no results.

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Look at the Inner Exception and find out what object might have caused the problem, you might have changed its name.

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I've just run into this issue and it was because I had updated a view in my DB and not refreshed the schema in my mapping.

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In my case, It was from Stored Producers. I was removed a field from table and forgotten to remove it from my SP.