DatagridviewComboBox Column Dependent on another DatagridviewComboBox Column

i have two DataGridViewComboBox Columns First Have Directly Datasource Assign on Form Load so tell me how to add items on2nd GridViewComboBox Column but first 2nd Column Dependent on 1st DatagridViewColumn Like This query="select desc from article where article_name='"+row.cell[0].toString()+"'" Give me answer with database values not hardcode values i'm doing only on first row when second row come data merging 1st and 2nd row if i can clear gridviewcombobox then its effect on all rows and only itms show current row previous row itms clear

Project in Windows Form in C#