fix ToBindingList issue

[SvetlanaPN]

No description provided.

[DevExpressExampleBot]

Please correct the project and update this pull request by pushing a new commit.

[BUILDING ERROR]
   OUTPUT: E:\VS2017\MSBuild\15.0\Bin\Microsoft.Common.CurrentVersion.targets(2110,5): warning MSB3245: Could not resolve this reference. Could not locate the assembly "EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089, processorArchitecture=MSIL". Check to make sure the assembly exists on disk. If this reference is required by your code, you may get compilation errors. [R:\Temp\f543f36d-624c-4520-97aa-694a19aea520\tempTestingVB\XtraSchedulerEFTest\XtraSchedulerEFTest.vbproj]
E:\VS2017\MSBuild\15.0\Bin\Microsoft.Common.CurrentVersion.targets(2110,5): warning MSB3245: Could not resolve this reference. Could not locate the assembly "EntityFramework.SqlServer, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089, processorArchitecture=MSIL". Check to make sure the assembly exists on disk. If this reference is required by your code, you may get compilation errors. [R:\Temp\f543f36d-624c-4520-97aa-694a19aea520\tempTestingVB\XtraSchedulerEFTest\XtraSchedulerEFTest.vbproj]
R:\Temp\f543f36d-624c-4520-97aa-694a19aea520\tempTestingVB\XtraSchedulerEFTest\Form1.vb(2,9): error BC40056: Namespace or type specified in the Imports 'System.Data.Entity' doesn't contain any public member or cannot be found. Make sure the namespace or the type is defined and contains at least one public member. Make sure the imported element name doesn't use any aliases. [R:\Temp\f543f36d-624c-4520-97aa-694a19aea520\tempTestingVB\XtraSchedulerEFTest\XtraSchedulerEFTest.vbproj]
R:\Temp\f543f36d-624c-4520-97aa-694a19aea520\tempTestingVB\XtraSchedulerEFTest\SchedulerContext.vb(1,9): error BC40056: Namespace or type specified in the Imports 'System.Data.Entity' doesn't contain any public member or cannot be found. Make sure the namespace or the type is defined and contains at least one public member. Make sure the imported element name doesn't use any aliases. [R:\Temp\f543f36d-624c-4520-97aa-694a19aea520\tempTestingVB\XtraSchedulerEFTest\XtraSchedulerEFTest.vbproj]
R:\Temp\f543f36d-624c-4520-97aa-694a19aea520\tempTestingVB\XtraSchedulerEFTest\SchedulerContext.vb(6,18): error BC30002: Type 'DbContext' is not defined. [R:\Temp\f543f36d-624c-4520-97aa-694a19aea520\tempTestingVB\XtraSchedulerEFTest\XtraSchedulerEFTest.vbproj]
R:\Temp\f543f36d-624c-4520-97aa-694a19aea520\tempTestingVB\XtraSchedulerEFTest\SchedulerContext.vb(14,18): error BC30002: Type 'DropCreateDatabaseIfModelChanges' is not defined. [R:\Temp\f543f36d-624c-4520-97aa-694a19aea520\tempTestingVB\XtraSchedulerEFTest\XtraSchedulerEFTest.vbproj]
R:\Temp\f543f36d-624c-4520-97aa-694a19aea520\tempTestingVB\XtraSchedulerEFTest\SchedulerContext.vb(8,45): error BC30002: Type 'DbSet' is not defined. [R:\Temp\f543f36d-624c-4520-97aa-694a19aea520\tempTestingVB\XtraSchedulerEFTest\XtraSchedulerEFTest.vbproj]
R:\Temp\f543f36d-624c-4520-97aa-694a19aea520\tempTestingVB\XtraSchedulerEFTest\SchedulerContext.vb(9,42): error BC30002: Type 'DbSet' is not defined. [R:\Temp\f543f36d-624c-4520-97aa-694a19aea520\tempTestingVB\XtraSchedulerEFTest\XtraSchedulerEFTest.vbproj]
R:\Temp\f543f36d-624c-4520-97aa-694a19aea520\tempTestingVB\XtraSchedulerEFTest\SchedulerContext.vb(16,33): error BC30284: sub 'Seed' cannot be declared 'Overrides' because it does not override a sub in a base class. [R:\Temp\f543f36d-624c-4520-97aa-694a19aea520\tempTestingVB\XtraSchedulerEFTest\XtraSchedulerEFTest.vbproj]

http://codecentral:8080/job/entity-framework-codefirst-model-for-xtrascheduler-data-binding-e4107_18.1.3+/4/console