主题：组合框 combobox 属性中设置 如何做到不重复值

Dim q As new QueryBuilder
q.TableName = "临时表"
q.SelectString = "Select DISTINCT 第一列, 第二列 From {表A}"
q.Build

Dim cbx As WinForm.ComboBox = e.Form.Controls("ComboBox1")
cbx.ValueMember = "第一列"
cbx.DisplayMember = "第二列"
cbx.DataSource = "临时表"