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I had 4 combo boxes one by one, in the 1st one i am filling the data from the database, in the 1st cmbitemstatechanged event i am filling the data into the 2nd combobox from database, based upon the value in the 2nd combobox i have to fill up the remaining 2 combos dynamically by considering the 1st combo value. 3rd and 4th combos values will change on the basis of the 2nd combo and the 2nd combo value will change only on the basis of 1st value.
so now the problem is 2nd one is fillling the data on the basis of 1st combo successfully, and basedo on the 2nd the remainig are not working properly throwing some exceptions and the fields are empty also.
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