本文介绍了如何从oledbdatareader检索数据的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我数据库中的记录，但是当我尝试按条件检索它时，它没有显示记录...
Records in my db but when i am trying to retrieve it by where condition it shows no records...
*** Sample DBs
ID catid unit price pqty
2 1 pcc $100.00 6
1 1 pcc $109.00 1
2 2 fas $44.00 3
***此处的代码
*** Code here
Dim ada As OleDb.OleDbDataAdapter = New OleDb.OleDbDataAdapter()
Dim cmds As OleDb.OleDbCommand = New OleDb.OleDbCommand("SELECT * FROM salespurchase WHERE ID=" & 2, conn)
ada.SelectCommand = cmds
dim rdr As OleDb.OleDbDataReader = cmds.ExecuteReader
**HERE IF CONDITION DOESN'T GO INSIDE...
If (rdr.HasRows) Then
MsgBox("sfs")
End If
rdr.close()
专家帮助...感谢
EXPERT HELP PLEASE...THANKS
推荐答案
***此处的代码
*** Code here
Dim ada As OleDb.OleDbDataAdapter = New OleDb.OleDbDataAdapter()
Dim cmds As OleDb.OleDbCommand = New OleDb.OleDbCommand("SELECT * FROM salespurchase WHERE ID=" & 2, conn)
ada.SelectCommand = cmds
dim rdr As OleDb.OleDbDataReader = cmds.ExecuteReader
**HERE IF CONDITION DOESN'T GO INSIDE...
If (rdr.HasRows) Then
MsgBox("sfs")
End If
rdr.close()
专家帮助...谢谢
EXPERT HELP PLEASE...THANKS
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