DataDrid控件怎么不显示数据
在一个表单中放一个DataDrid控件然后写下如下代码:
Private sub Form_load()
Dim constr As String, sqlstr As String
constr = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + Di + _
"\Dat.mdb;Persist Security Info=False"
conn.Open constr
sqlstr = "select * from Hcp "
cp.Open sqlstr, conn, adOpenKeyset, adLockPessimistic
Set DataGrid1.DataSource = cp
end sub
控件怎么不显示数据呢?当然数据库中有数据