我正在尝试使用参数将列表项中的多行插入到数据库中。但它不会给我任何错误,也不会在表中插入任何数据。有人对此有任何想法吗?
strSQL = "insert into tbltrans2 (transid,itemcode,itemname,qty,price,[total],btw) values ( ?,?,?,?,?,?,?)"
Using cn As New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + Application.StartupPath + "\\POS.mdb"), _
cmd As New OleDbCommand(strSQL, cn)
cmd.Parameters.Add("?", OleDbType.VarChar).Value = txtTransId.Text
cmd.Parameters.Add("?", OleDbType.VarChar, 10)
cmd.Parameters.Add("?", OleDbType.VarChar, 50)
cmd.Parameters.Add("?", OleDbType.Integer)
cmd.Parameters.Add("?", OleDbType.Decimal)
cmd.Parameters.Add("?", OleDbType.Decimal)
cmd.Parameters.Add("?", OleDbType.VarChar, 50)
cn.Open()
For Each ls As ListViewItem In ListItems.Items
cmd.Parameters(1).Value = ls.Tag
cmd.Parameters(2).Value = ls.SubItems(0).Text
cmd.Parameters(3).Value = Integer.Parse(ls.SubItems(1).Text)
cmd.Parameters(4).Value = Decimal.Parse(ls.SubItems(2).Text)
cmd.Parameters(5).Value = Decimal.Parse(ls.SubItems(3).Text)
cmd.Parameters(6).Value = ls.SubItems(5).Text
Next ls
End Using
嘿史蒂夫,当我尝试这样做时,它给了我“更新语句中的语法错误”错误。这是我的代码:
Try
strSQL = "UPDATE set instock = ? where itemcode= ?"
Using cn As New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + Application.StartupPath + "\\POS.mdb"), _
cmd As New OleDbCommand(strSQL, cn)
cn.Open()
For Each ls As ListViewItem In ListItems.Items
cmd.Parameters.Add("?", OleDbType.Integer).Value = 100
cmd.Parameters.Add("?", OleDbType.VarChar).Value = ls.Tag
cmd.ExecuteNonQuery()
Next ls
cn.Close()
End Using
Catch ex As Exception
MsgBox(ex.Message)
End Try
现在,我仍然需要帮助减少库存。这是我使用的代码,但它不起作用。
strSQL = "UPDATE tblitem set instock ='instock'- ? where itemcode = ?"
Using cn As New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + Application.StartupPath + "\\POS.mdb"), _
cmd As New OleDbCommand(strSQL, cn)
cn.Open()
For Each ls As ListViewItem In SalesListItems.Items
If Not (ls.SubItems(1).Tag(0) = "n") Then
cmd.Parameters.Add("?", OleDbType.Integer).Value = ls.SubItems(1).Text
cmd.Parameters.Add("?", OleDbType.VarChar, 10).Value = ls.Tag
cmd.ExecuteNonQuery()
End If
Next ls
cn.Close()
End Using