c# - How do I populate a DatagridViewComboboxColumn -

i not sure how populate datagridviewcomboboxcolumn. there several properties in datagridviewcomboboxcolumn, , not sure use:

• datasource
• items
• displaymember
• valuemember

i confused there many properties. tried:

datagridviewcomboboxcolumn cb = (datagridviewcomboboxcolumn)datagridview1.rows[0].cells[0].value; cb.items.add("test");  //or  cb.datasource = new list<string>() { "t", "e", "s", "t" }; 

you have cast datagridviewcomboboxcell, not datagridviewcomboboxcolumn :) example:

((datagridviewcomboboxcell)datagridview1.rows[0].cells[0]).items.add("something");