从C＃中删除项目后如何刷新Combox

Question

dt = GetId1(ClasSType);
string ClassID = dt.Rows[0][0].ToString();
ncd.DeleteNewNoorWood(ClassID);
typeCb.Refresh();

The TypeCb is a comboBox control Where I'm having a list of items. When I delete the item using my DeleteNewNorthWood() method the item is getting deleted from the database, however I can still see it on the form.

How should I refresh it?

Answer 1

 typeCb.Items.Clear();
 for (int i = 0; i < DataTable.Rows.Count; i++)
 typeCb.Items.Add(nTable.Rows[i][1].ToString());

This will work

Answer 2

在组合框上再次指定数据源

typeCb.DataSource = yourDataSource;

Answer 3

You should bind your typeCb.DataSource to an ObservableCollection. This way you don't need refresh manually.