The ViewData item that has the key 'category' is of type 'System.String' but must be of type 'IEnumerable'
93966
The ViewData item that has the key 'XXX' is of type 'System.Int32' but must be of type 'IEnumerable'
113751
Getting exact error type in from DbValidationException
92213
sObject ' ' type is not supported
31796
Why cannot IEnumerable be cast as IEnumerable?
138687
How to fix "System.QueryException: List has more than 1 row for assignment to SObject"
20892
C# nullable string error
8479
System.Collections.Generic.IEnumerable' does not contain any definition for 'ToList'
92187
Unable to cast object of type 'System.DBNull' to type 'System.String`
123381
How do I use IValidatableObject?
72009
How to Prevent the System.QueryException
101613
EntityType has no key defined error
484
"DataBinding: 'index+NewsItem' does not contain a property with the name 'Link'", but property exists (Not a Typo)
60497
System.QueryException: List has more than 1 row for assignment to SObject
77772
Troubles implementing IEnumerable
109837
Collection was modified; enumeration may not execute error when removing a ListItem from a LIstBox
27097
Does Class need to implement IEnumerable to use Foreach
77826
How to convert IEnumerable to ObservableCollection?