大家看看这段简单程序，哪有毛病？

Question

DBCommand = New sqlDataAdapter _
("Select * from employees Where employees.处室ID = ddlDepartments.SelectedItem.Value",DBConn) 
====>
DBCommand = New sqlDataAdapter _
("Select * from employees Where employees.处室ID = "&ddlDepartments.SelectedItem.Value,DBConn) 

Answer 1

("Select * from employees Where employees.处室ID = ddlDepartments.SelectedItem.Value",DBConn) 
改成：
("Select * from employees Where employees.处室ID =" & ddlDepartments.SelectedItem.Value,DBConn)