Fill ComboBox inside a DataGridView with two Different Tables in C#? -

i capable of filling combobox 1 datatable. not able fill same combobox datatable during runtime. first datatable , second datatable contains different data same columns.

            dtone= abcd.retrivdata();             cnsmnm.datasource = dtone;             cnsmnm.displaymember = "one_name";             cnsmnm.valuemember = "one_id"; 

second datatable

            dtsecond= efgh.retrivdata();             cnsmnm.datasource = dtsecond;             cnsmnm.displaymember = "one_name";             cnsmnm.valuemember = "one_id"; 

you can use datatable.merge method. this:

dtone.merge(dtsecond); cnsmnm.datasource = dtone;