Problem in Combo Select
In my form i have a combo. My requirement is, for example i load 5 data A,B,C,D,E in combo. First i select the 'A' and load the corresponding elements in the matrix, next i select 'B' and the corresponding elements of 'B' was loaded in matrix now again i select 'A ' it should check 'A' is already selected and the corresponding elements are already displayed in matrix again the elements of 'A' should not be loaded in matrix. Plz tell how to check this.
Thanks in Advance.