[VB.NET]用自动编号做为主键的表无法更新 救命,急!!!!!!!!!!!!!!!!!!!!!

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用自动编号做为主键的表无法更新 救命,急!!!!!!!!!!!!!!!!!!!!!
我在Access里建了一个表,是用自动编号作为主键的,用vb.net来对数据库进行update,delete时就出错拉，在更新按钮的代码如下
Dim tablename As String
SearchSQL = "select * from book "
tablename = "book "
ExecuteSQL(SearchSQL, tablename)
myrow.Item(0) = Trim(TextBox1.Text)
myrow.Item(1) = Trim(TextBox2.Text)

myrow.Item(2) = Trim(TextBox5.Text)
myrow.Item(3) = Trim(TextBox6.Text)
myrow.Item(4) = Trim(TextBox7.Text)
mytable.GetChanges()
cmd = New OleDbCommandBuilder(ADOcmd)
ADOcmd.Update(ds, "book ")
ds.AcceptChanges()
MsgBox( "更新成功 ")
这个代码如果用在没有自动编号作为主键的表中是成功的，但是自动编号作为主键的表就不行了，怎么办啊，求救啊
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别更新自动编号那一列
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同意楼上的
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就算我不更新那一列还是出问题的啊，怎么办啊
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贴下Update代码...
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