当DatagridView中的Dependent列时，如何过滤数据，因为私有选择项消失了

Question

In my datagridview there are two dependent columns, one is category and the other is items. So I want to filter my item column list as per selected category.

But the problem is that when I change the category wise data to datasource of items combobox, previous selected items names disappear because previous items is not in current datasource.

So what is correct solution of such problem.

Answer 1

Filter columns with a Dataview: http://msdn.microsoft.com/en-us/library/system.data.dataview.aspx

Depending on input validation and what not, you can update the DataSource after an edit operation.