获取主键在asp.net中插入后（Visual Basic中） [英] Getting primary key after an insert in asp.net (visual basic)

问题描述

我添加一条记录是这样的：

I'm adding a record like this:

    Dim pathString As String = HttpContext.Current.Request.MapPath("Banking.mdb")
    Dim odbconBanking As New OleDbConnection _
             ("Provider=Microsoft.Jet.OLEDB.4.0;" & _
             "Data Source=" + pathString)
    Dim sql As String
    sql = "INSERT INTO tblUsers ( FirstName, LastName, Address, City, Province, Zip, Phone, UserName, [Password])" & _
              " VALUES ('" & firstName & "', '" & lastName & "', '" & address & _
            "', '" & city & "', '" & province & "', '" & zip & "', '" & phone & "', '" & username & "', '" & password & "');"
    odbconBanking.Open()
    Dim cmd As New OleDbCommand(sql, odbconBanking)
    cmd.ExecuteNonQuery()
    odbconBanking.Close()

主键是用户ID叫自动编号字段。所以，我怎么得到我刚插入的记录的主键？

The primary key is an autonumber field called UserID. So, how do I get the primary key of the record I just inserted?

感谢。

推荐答案

我相信一个参数化查询会是这个样子：

I believe a parameterized query would look something like this:

Dim pathString As String = HttpContext.Current.Request.MapPath("Banking.mdb")
Dim odbconBanking As New OleDbConnection _
     ("Provider=Microsoft.Jet.OLEDB.4.0;" & _
     "Data Source=" + pathString)
Dim sql As String
sql = "INSERT INTO tblUsers ( FirstName, LastName, Address, City, Province, Zip, Phone, UserName, [Password])" & _
      " VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?);"
odbconBanking.Open()
Dim cmd As New OleDbCommand(sql, odbconBanking)

//Add Params here
cmd.Parameters.Add(new OdbcParameter("@FirstName", firstName))
cmd.Parameters.Add(new OdbcParameter("@LastName", lastName))
//..etc

//End add Params here

cmd.ExecuteNonQuery()
Dim newcmd As New OleDbCommand("SELECT @@IDENTITY", odbconBanking)
uid = newcmd.ExecuteScalar

odbconBanking.Close()

我的语法可能有点过，因为我更习惯使用SQL Server库，而不是ODBC库，但应该让你开始。

My syntax might be a bit off as I am more accustomed to using the Sql Server library and not the Odbc library, but that should get you started.

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