How to remove duplicate in combobox with database access
I have database like this
Manufacture Model No Length Width height
Manufacture 1 MD-01 200 300 100
Manufacture 1 MD-02 300 400 100
Manufacture 1 MD-03 400 300 150
Manufacture 2 MAD-01 200 450 100
Manufacture 2 MAD-02 250 400 100
Manufacture 3 MDI-01 300 300 100
Manufacture 4 MOv-01 350 300 100
I would like to create 2 combobox -
1) Manufacture 2 ) model No
Manufacture should display for above example Manufacture 1,Manufacture 2,Manufacture 3, Manufacture 4
when particular manufacture selected for example Manufacture 2 -> combox should display only MAD-01 & MAD 02.
Based on both selection text box must me loaded with length, width , height.
i tried sample code & try to assign the combox with database value. I found duplicate list of column. Like for combobox1 accumulate
Manufacture 1
Manufacture 1
Manufacture 1
Manufacture 2
Manufacture 2
Manufacture 3
Manufacture 4
Is there any example program available to do this. How can do this.
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