DomainObjects Class Library

Field.Replace Method 

Replaces all occurrences of substringToFind in the string value of this field with replacementString.

Translates to a REPLACE(fieldToSearch, substringToFind, replacementString) SQL function.
public Replace Replace(
   String substringToFind,
   String replacementString
);

See Also

Field Class | DomainObjects.Facade.Command.Expression Namespace