.NET Entity Framework Unable to update the EntitySet because it has a DefiningQuery and no element exists in the element to support the current operation
<![CDATA[Error: Unable to update the EntitySet because it has a DefiningQuery and no
<UpdateFunction> element exists in the <ModificationFunctionMapping>
element to support the current operation
The error may occur because there is no Primary Key defined in the
table being referenced.
First, make a column a primary key:
alter table myTable
Add primary key (myColumnChoice)
Second, delete the table and re add it to your project (or EDMX file).
That should do it.]]>
See also
