This property identifies a column in the object. Values for this property range from -1 (minus one) to the number of columns on the list. The value of this property for the first column is 1 (one), for the second column is 2 (two), and so on. Configuring this property as 0 (zero) displays values for the ListIndex property. Configuring this property as -1 (minus one) displays the first column that has the value of the ColumnWidths greater than 0 (zero).