Finds the first instance of a given value 
      
        [Visual Basic]
        NotOverridable Public Function IndexOf( _
   ByVal 
item As 
Boolean _
) As 
Integer _
 
      
        [C#]
        public 
int IndexOf(   
bool item);
 
      Parameters
      
        - 
          item
        
- The value - whether true or false - to search for.
Return Value
      The index of the value found, or -1 if none are present.
      Implements
      
        IList`1.IndexOf
      
      See Also
      
        BitString Class | NpgsqlTypes Namespace