FillInChoice Property
The FillInChoice property of the SPFieldMultiChoice class gets or sets a Boolean value that determines whether a text box for typing an alternative value is provided for the multichoice field.
Property Value
true if a text box is provided; otherwise, false.
Remarks
Setting the DisplayFormat property requires that the Update method be called for changes to take effect in the database.
Requirements
Platforms: Microsoft Windows Server 2003
Security: Code Access Security