Set objRS = Server.CreateObject ("ADODB.RecordSet")
ConStr = "Provider=Microsoft.Jet.OLEDB.4.0;" & _
"Data Source=G:\Inetpub\wwwroot\TestPage\TheData\TestData.mdb;" & _
"Persist Security Info=False"
SqlStr = "SELECT * " & _
"FROM Techs " & _
"WHERE UserID = " & UserID & " "
objrs.Open SqlStr, ConStr, adOpenStatic, adLockOptimistic,adCmdText
If Objrs.recordCount <> 0 Then
TechUserName = Objrs("TechUserName")
Objrs.Update
Objrs("LastLogin") = Now()
Objrs.Update
Else
Objrs.AddNew
Objrs("UserID") = UserID
Objrs.Update
End If
Objrs.Close
Set objRS = Nothing
甚至可能吗？有人可以帮我在ASP.net（VB）中执行上面的代码，或者给我一个关于如何做到这一点的非常好的全面教程。 提前谢谢。
答案 0 :(得分：1)
啊..首先关闭 - 你正在尝试用.net做经典的vb。 报废它。没有更多的游标。它的客户端数据基本上可以返回数据集或数据读取器（或单个值）
粗略地看： http://msdn.microsoft.com/en-us/library/bh8kx08z%28v=VS.100%29.aspx
他们错过了他们获得连接的地方，基本上就是这样 Dim连接为New SqlConnection（“server = localhost; uid = username; pwd = whatver;”）
确保在完成后丢弃所有内容 connection.Dispose（）
一旦你有了数据集 - 只需（c＃语法）
foreach(DataRow row in yourDataSet.Tables[0].Rows)
{
Debug.WriteLine(row["YourFieldName"])
}
对于数据阅读器，请参阅： http://www.developerfusion.com/article/4278/using-adonet-with-sql-server/2/
不同之处在于数据集在客户端加载了所有数据。与ado的服务器端游标相比有点不同。 当你滚动它们时，DataReader会对结果进行流式处理 - 在内存中形成这个大型数据集的开销并不存在，所以它的速度要快一些。
希望这能让你开始 - 记住SCRAP ADO的东西。它不再使用了。
答案 1 :(得分：0)
检查this link是否对VB.Net中的MS Access数据库执行SQL命令。
答案 2 :(得分：0)
正如NoAlias告诉你的那样，但请注意不使 错误开始。 忘记在SQL中插入文本，记住引号必须加倍，等等。
尝试参数化的sql语句，如下例所示：
我有一个包含4个colunms的表，CollCode和CollSeq是关键，TermType和TermText是可修改的数据 该代码解释了如何插入，更新或删除带有参数instaed的行，如果SQL中有textvalues。 该代码仅对ACCESS有效，SQL SERVER或MYSQL需要不同的模板代码并具有不同的DbTypes
在该计划的第一部分：
' select
Dim SQLaxSelect As String = "SELECT DISTINCT CollSeq FROM SearchTerms WHERE CollCode = ? ORDER BY CollSeq"
Dim DRaxSelect As OleDbDataReader = Nothing
Dim DCaxSelect As OleDbCommand
Dim axSelP1 As New OleDbParameter("@CollCode", OleDbType.VarChar, 4)
DCaxSelect = New OleDbCommand(SQLaxSelect, DbConn)
DCaxSelect.Parameters.Add(axSelP1)
' Insert
Dim DbConn As New OleDbConnection(SqlProv)
Dim SQLTwInsert As String = "INSERT INTO SearchTerms (CollCode, CollSeq, TermType, TermText) VALUES (?, ?, ?, ?)"
Dim DRTwInsert As OleDbDataReader = Nothing
Dim DCCTwInsert As OleDbCommand
Dim TwInsP1 As New OleDbParameter("@CollCode", OleDbType.VarChar, 4)
Dim TwInsP2 As New OleDbParameter("@CollSeq", OleDbType.Integer, 4)
Dim TwInsP3 As New OleDbParameter("@TermType", OleDbType.VarChar, 4)
Dim TwInsP4 As New OleDbParameter("@TermText", OleDbType.VarChar, 255)
DCCTwInsert = New OleDbCommand(SQLTwInsert, DbConn)
DCCTwInsert.Parameters.Add(TwInsP1)
DCCTwInsert.Parameters.Add(TwInsP2)
DCCTwInsert.Parameters.Add(TwInsP3)
DCCTwInsert.Parameters.Add(TwInsP4)
' Delete
Dim SQLTwDelete As String = "DELETE FROM SearchTerms WHERE CollCode = ? AND CollSeq = ? AND TermType = ? AND TermText = ?"
Dim DRTwDelete As OleDbDataReader = Nothing
Dim DCCTwDelete As OleDbCommand
Dim TwDelP1 As New OleDbParameter("@CollCode", OleDbType.VarChar, 4)
Dim TwDelP2 As New OleDbParameter("@CollSeq", OleDbType.Integer, 4)
Dim TwDelP3 As New OleDbParameter("@TermType", OleDbType.VarChar, 4)
Dim TwDelP4 As New OleDbParameter("@TermText", OleDbType.VarChar, 255)
DCCTwDelete = New OleDbCommand(SQLTwDelete, DbConn)
DCCTwDelete.Parameters.Add(TwDelP1)
DCCTwDelete.Parameters.Add(TwDelP2)
DCCTwDelete.Parameters.Add(TwDelP3)
DCCTwDelete.Parameters.Add(TwDelP4)
' Update
Dim SQLTwUpdate As String = "UPDATE SearchTerms SET TermType = ?, TermText = ? WHERE CollCode = ? AND CollSeq = ? AND TermType = ? AND TermText = ?"
Dim DRTwUpdate As OleDbDataReader = Nothing
Dim DCCTwUpdate As OleDbCommand
Dim TwUpdP1 As New OleDbParameter("@TermType", OleDbType.VarChar, 4)
Dim TwUpdP2 As New OleDbParameter("@TermText", OleDbType.VarChar, 255)
Dim TwUpdP3 As New OleDbParameter("@CollCode", OleDbType.VarChar, 4)
Dim TwUpdP4 As New OleDbParameter("@CollSeq", OleDbType.Integer, 4)
Dim TwUpdP5 As New OleDbParameter("@oldTermType", OleDbType.VarChar, 4)
Dim TwUpdP6 As New OleDbParameter("@oldTermText", OleDbType.VarChar, 255)
DCCTwUpdate = New OleDbCommand(SQLTwUpdate, DbConn)
DCCTwUpdate.Parameters.Add(TwUpdP1)
DCCTwUpdate.Parameters.Add(TwUpdP2)
DCCTwUpdate.Parameters.Add(TwUpdP3)
DCCTwUpdate.Parameters.Add(TwUpdP4)
DCCTwUpdate.Parameters.Add(TwUpdP5)
DCCTwUpdate.Parameters.Add(TwUpdP6)
在程序的处理部分：
'select
axSelP1.Value = requested key value CollCode
Try
DRaxSelect = DCaxSelect.ExecuteReader()
Do While (DRaxSelect.Read())
'get value, first SELECTed value has index 0
CollSeq = GetDbIntegerValue(DRaxSelect, 0) ' routine to convert NULL in 0
Loop
Catch ex As Exception
your type of report exception
Finally
If Not (DRaxSelect Is Nothing) Then
DRaxSelect.Dispose()
DRaxSelect.Close()
End If
End Try
' Update
TwUpdP1.Value = new value TermType
TwUpdP2.Value = new value TermText
TwUpdP3.Value = key value CollCode
TwUpdP4.Value = key value CollSeq
TwUpdP5.Value = old value TermType to avoid updating a row that 1 millisecond earlier was modified by someone else
TwUpdP6.Value = old value TermText
Try
DRTwUpdate = DCCTwUpdate.ExecuteReader()
Catch ex As Exception
your type of report exception
Finally
If Not (DRTwUpdate Is Nothing) Then
DRTwUpdate.Dispose()
DRTwUpdate.Close()
End If
End Try
' Insert
TwInsP1.Value = new key value CollCode
TwInsP2.Value = new key value CollSeq
TwInsP3.Value = value TermType
TwInsP4.Value = value TermText
Try
DRTwInsert = DCCTwInsert.ExecuteReader()
Catch ex As Exception
your type of report exception
Finally
If Not (DRTwInsert Is Nothing) Then
DRTwInsert.Dispose()
DRTwInsert.Close()
End If
End Try
' Delete
TwDelP1.Value = key value CollCode
TwDelP2.Value = key value CollSeq
TwDelP3.Value = old value TermType to avoid deleting a row that 1 millisecond earlier was modified by someone else
TwDelP4.Value = old value TermText
Try
DRTwDelete = DCCTwDelete.ExecuteReader()
Catch ex As Exception
your type of report exception
Finally
If Not (DRTwDelete Is Nothing) Then
DRTwDelete.Dispose()
DRTwDelete.Close()
End If
End Try
我的例程（在模块中）
Friend Function GetDbIntegerValue(ByVal Dr As OleDbDataReader, ByVal nr As Integer) As Integer
If IsDBNull(Dr.Item(nr)) Then
Return 0
Else
Return Dr.GetInt32(nr)
End If
End Function
答案 3 :(得分：0)
呜呜我明白了！
Dim SqlStr As String
Dim ConStr As String = ConfigurationManager.ConnectionStrings("TCConStr").ConnectionString
SqlStr = "SELECT * " & _
"FROM TechUsers " & _
"WHERE TechWWID = " & Chr(34) & TechWWID & Chr(34) & " " & _
"AND TechEmplNum = " & TechEmplNum & " "
Dim CN As OleDbConnection = New OleDbConnection(ConStr)
CN.Open()
Dim DA As OleDbDataAdapter = New OleDbDataAdapter(SqlStr, CN)
Dim DS As New DataSet
DA.Fill(DS, "TechUsers")
Dim DT As DataTable = DS.Tables("TechUsers")
Dim RecCount As Integer = DT.Rows.Count
Dim CB As OleDbCommandBuilder = New OleDbCommandBuilder(DA)
If RecCount = 0 Then
DA.InsertCommand = CB.GetInsertCommand()
Dim DR As DataRow = DT.NewRow()
DR("TechName") = TechName
DR("TechWWID") = TechWWID
DR("TechEmplNum") = TechEmplNum
DR("FirstLogin") = Date.Now()
DR("LastLogin") = Date.Now()
DR("LoginCount") = 1
DT.Rows.Add(DR)
DA.Update(DS, "TechUsers")
Else
Dim DR As DataRow = DT.Rows(0)
Dim LoginCount As Integer = DR("LoginCount")
TestStuff.InnerHtml = TestStuff.InnerHtml & "<br > " & LoginCount
DA.UpdateCommand = CB.GetUpdateCommand()
DR("LastLogin") = Date.Now()
DR("LoginCount") = LoginCount + 1
DA.Update(DS, "TechUsers")
End If
CN.Close()
感谢大家提供完成此任务的线索。