Adds a field to this object class.
[Visual Basic 6.0] Sub AddField(
ByVal Field As IField _
[Visual Basic .NET] Public Sub AddField ( _ ByVal Field As IField _ )
[Java] public void addField ( IField Field ) throws IOException, AutomationException
[C++] HRESULT AddField( IField* Field );
Field is a parameter of type IField
-2147220649 - FDO_E_TABLE_DUPLICATE_COLUMN
A field with the specified name already exists in the table.
-2147220961 - FDO_E_NO_SCHEMA_LICENSE
You are not licensed to modify the schema of the feature class. This error can arise with an ArcView license when a field is added to a feature class that participates in a geometric network, topology or composite relationship class (such as feature-linked annotation)
If your application/site is not appropriately licensed, AddField can return an Err.Number of FDO_E_NO_SCHEMA_LICENSE.
Prior to adding a new field to a class, an exclusive schema lock should be obtained using the ISchemaLock interface.
Attempting to add a new field that does not allow null values will fail, if the class already has data in it. The only solution is to recreate the class with the non-nullable field, then copy the rows from the original class into the new class.