Vb.net 将值插入到.mdb文件时，Visual Studio 2010多次插入语法错误_Vb.net

Vb.net 将值插入到.mdb文件时，Visual Studio 2010多次插入语法错误

vb.net

Vb.net 将值插入到.mdb文件时，Visual Studio 2010多次插入语法错误,vb.net,Vb.net,insert语句缺少什么？完整的代码现在在这里。我无法将新字段值添加到.mdb文件。开发此应用程序花了3天时间，现在无法运行 Public Class client Dim cnn As New OleDb.OleDbConnection Private Sub reloaddata() If Not cnn.State = ConnectionState.Open Then cnn.Open() End If Dim da As New OleDb.Ol

insert语句缺少什么？完整的代码现在在这里。我无法将新字段值添加到.mdb文件。开发此应用程序花了3天时间，现在无法运行

Public Class client
Dim cnn As New OleDb.OleDbConnection
Private Sub reloaddata()
    If Not cnn.State = ConnectionState.Open Then
        cnn.Open()
    End If
    Dim da As New OleDb.OleDbDataAdapter("select * from clientsData", cnn)
    Dim dt As New DataTable
    da.Fill(dt)
    Me.cview.DataSource = dt
    cnn.Close()

End Sub

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
    display.Hide()
    cnn = New OleDb.OleDbConnection
    cnn.ConnectionString = "provider= microsoft.jet.oledb.4.0; data source=" & Application.StartupPath & "\clients.mdb"
    Me.reloaddata()
End Sub

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
    display.Show()
End Sub
Private Sub cview_CellClick(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles cview.CellClick

    If cnn.State = ConnectionState.Closed Then
        cnn.Open()

    End If
    Dim i As Integer
    i = cview.CurrentRow.Index
    If cview.CurrentCell.Value Is Nothing Then
        MsgBox("Empty Field")
    Else
        view.lbl1.Text = cview.Item(0, i).Value.ToString
        view.lbl2.Text = cview.Item(1, i).Value.ToString
        view.lbl3.Text = cview.Item(2, i).Value.ToString
        view.lbl4.Text = cview.Item(3, i).Value.ToString
        view.lbl5.Text = cview.Item(4, i).Value.ToString
        view.lbl6.Text = cview.Item(5, i).Value.ToString
        view.lbl7.Text = cview.Item(6, i).Value.ToString
        view.lbl8.Text = cview.Item(11, i).Value.ToString
        view.lbl9.Text = cview.Item(12, i).Value.ToString
        view.lbl10.Text = cview.Item(7, i).Value.ToString
        view.lbl11.Text = cview.Item(8, i).Value.ToString
        view.lbl12.Text = cview.Item(9, i).Value.ToString
        view.lbl13.Text = cview.Item(10, i).Value.ToString
        view.lbl14.Text = cview.Item(13, i).Value.ToString
        view.Show()

    End If

End Sub

Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click

    Dim cmd As New OleDb.OleDbCommand
    If Not cnn.State = ConnectionState.Open Then
      cnn.Open()
    End If

    cmd.Connection = cnn       
    cmd.CommandText = "insert into clientsdata(ID,Client,Project,Domain,Hosting,bulk sms,maintenance,Order date,amount,last billing,next billing,username,password,due amount) VALUES ('" & Me.cid.Text & "','" & Me.cname.Text & "','" & Me.cproj.Text & "','" & Me.cdmn.Text & "','" & Me.chost.Text & "','" & Me.csms.Text & "','" & Me.cmain.Text & "','" & Me.codt.Text & "','" & Me.camnt.Text & "','" & Me.cldt.Text & "','" & Me.cndt.Text & "','" & Me.cuid.Text & "','" & Me.cpass.Text & "','" & Me.cdue.Text & "' )"
    cmd.ExecuteNonQuery()
    Me.reloaddata()
   cnn.Close()

End Sub

Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click
    cid.Text = "cid"
    cname.Text = "cname"
    cproj.Text = "cpro"
    cdmn.Text = "domain"
    chost.Text = "chost"
    csms.Text = "sms"
    cmain.Text = "main"
    codt.Text = "codt"
    camnt.Text = "mount"
    cldt.Text = "last"
    cndt.Text = "next"
    cdue.Text = "due"
    cuid.Text = "uid"
    cpass.Text = "pass"
   End Sub

insert语句缺少什么？完整的代码现在在这里。我无法将新字段值添加到.mdb文件。开发此应用程序花了3天时间，现在无法运行

Public Class client
Dim cnn As New OleDb.OleDbConnection
Private Sub reloaddata()
    If Not cnn.State = ConnectionState.Open Then
        cnn.Open()
    End If
    Dim da As New OleDb.OleDbDataAdapter("select * from clientsData", cnn)
    Dim dt As New DataTable
    da.Fill(dt)
    Me.cview.DataSource = dt
    cnn.Close()

End Sub

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
    display.Hide()
    cnn = New OleDb.OleDbConnection
    cnn.ConnectionString = "provider= microsoft.jet.oledb.4.0; data source=" & Application.StartupPath & "\clients.mdb"
    Me.reloaddata()
End Sub

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
    display.Show()
End Sub
Private Sub cview_CellClick(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles cview.CellClick

    If cnn.State = ConnectionState.Closed Then
        cnn.Open()

    End If
    Dim i As Integer
    i = cview.CurrentRow.Index
    If cview.CurrentCell.Value Is Nothing Then
        MsgBox("Empty Field")
    Else
        view.lbl1.Text = cview.Item(0, i).Value.ToString
        view.lbl2.Text = cview.Item(1, i).Value.ToString
        view.lbl3.Text = cview.Item(2, i).Value.ToString
        view.lbl4.Text = cview.Item(3, i).Value.ToString
        view.lbl5.Text = cview.Item(4, i).Value.ToString
        view.lbl6.Text = cview.Item(5, i).Value.ToString
        view.lbl7.Text = cview.Item(6, i).Value.ToString
        view.lbl8.Text = cview.Item(11, i).Value.ToString
        view.lbl9.Text = cview.Item(12, i).Value.ToString
        view.lbl10.Text = cview.Item(7, i).Value.ToString
        view.lbl11.Text = cview.Item(8, i).Value.ToString
        view.lbl12.Text = cview.Item(9, i).Value.ToString
        view.lbl13.Text = cview.Item(10, i).Value.ToString
        view.lbl14.Text = cview.Item(13, i).Value.ToString
        view.Show()

    End If

End Sub

Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click

    Dim cmd As New OleDb.OleDbCommand
    If Not cnn.State = ConnectionState.Open Then
      cnn.Open()
    End If

    cmd.Connection = cnn       
    cmd.CommandText = "insert into clientsdata(ID,Client,Project,Domain,Hosting,bulk sms,maintenance,Order date,amount,last billing,next billing,username,password,due amount) VALUES ('" & Me.cid.Text & "','" & Me.cname.Text & "','" & Me.cproj.Text & "','" & Me.cdmn.Text & "','" & Me.chost.Text & "','" & Me.csms.Text & "','" & Me.cmain.Text & "','" & Me.codt.Text & "','" & Me.camnt.Text & "','" & Me.cldt.Text & "','" & Me.cndt.Text & "','" & Me.cuid.Text & "','" & Me.cpass.Text & "','" & Me.cdue.Text & "' )"
    cmd.ExecuteNonQuery()
    Me.reloaddata()
   cnn.Close()

End Sub

Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click
    cid.Text = "cid"
    cname.Text = "cname"
    cproj.Text = "cpro"
    cdmn.Text = "domain"
    chost.Text = "chost"
    csms.Text = "sms"
    cmain.Text = "main"
    codt.Text = "codt"
    camnt.Text = "mount"
    cldt.Text = "last"
    cndt.Text = "next"
    cdue.Text = "due"
    cuid.Text = "uid"
    cpass.Text = "pass"
   End Sub

末级

好的，问题解决了！！我刚刚在字段中添加了[]

资料来源：

如果不知道每个

.Text

值中包含的内容，也不知道要填写的表的定义，就很难说问题出在哪里。但是我可以冒险猜测，

Me.camnt.Text

和

Me.cdue.Text

可能不想被单引号包围；也就是说，你可能需要这样的东西

Me.codt.Text & "'," & Me.camnt.Text & ",'" & Me.cldt.Text

及

您的

date

字段是一个关键字。您必须将其放在括号中：

[date]

。此外，任何带有空格的字段名也需要括号：

[Order date]

您确实应该使用参数来避免SQL注入，并解决更新数据库时的许多其他问题

我还避免尝试管理数据库的连接状态。只需使用

Using

语法，即可始终关闭连接

If Me.cid.Text = "" Then
  MessageBox.Show("Please input values")
Else
  Using con As New OleDb.OleDbConnection("...")
    con.Open()
    Using cmd As New OleDb.OleDbCommand()
      cmd.Connection = con
      cmd.CommandText = "..."
      cmd.Parameters.AddWithValue("@ID", Me.cid.Text)
      cmd.Parameters.AddWithValue(...more)
      cmd.ExecuteNonQuery()
    End Using
  End Using

  reloaddata()
End If

form1_load部分中已经添加了新连接、提供程序等。如果不处理命令和SQL语句，则易受SQL注入、池连接对象（但不包括占用大部分开销的连接）的攻击，在确定是谁进行查询之前，打开连接没有意义…codt.Text、cldt.Text、cndt.Text的格式是什么？您收到了什么错误消息？我已重建数据库并将日期更改为订单日期。。但问题仍然发生在“INSERT INTO语句中的语法错误”。@Ravikant若你们不打算使用参数，你们将不得不正确地使用单引号。我在一开始就发现缺少一个：

值（“&Me.cid.Text&”，“

应该是

值（“&Me.cid.Text&”，“

@Ravikant），您必须在带有空格的字段名周围放上括号[]：

[订单日期]

me.camnt.text包含要插入mdb文件中的值。@Ravikant，是的，我很感激。问题是，如果它们是数字，并且要填充的列是数字列，则不需要引号。

If Me.cid.Text = "" Then
  MessageBox.Show("Please input values")
Else
  Using con As New OleDb.OleDbConnection("...")
    con.Open()
    Using cmd As New OleDb.OleDbCommand()
      cmd.Connection = con
      cmd.CommandText = "..."
      cmd.Parameters.AddWithValue("@ID", Me.cid.Text)
      cmd.Parameters.AddWithValue(...more)
      cmd.ExecuteNonQuery()
    End Using
  End Using

  reloaddata()
End If