Edit/Update datagridview VB form - vb.net

Question

When I try to edit and update the data in datagriview it comes up with an error message saying Operator '&' is not defined for type 'TextBox' and string "".
please help. Thanks
Here is my code
Private Sub btnaddrecord_Click(sender As Object, e As EventArgs) Handles btnaddrecord.Click
Dim cmd As New OleDb.OleDbCommand
If Not cnn.State = ConnectionState.Open Then
cnn.Open()
End If
cmd.Connection = cnn
If Me.IdentificationNotest.Tag & "" = "" Then
cmd.CommandText = "INSERT INTO vehicledefects(Codenumber, vehiclereg, datereported, defects1, repaired1, defects2, repaired2, defects3, repaired3, datefixed) " & _
" VALUES(" & Me.IdentificationNotest.Text & ",'" & Me.vehiclereg.Text & "','" & Me.datereported.Text & "','" & Me.defects1.Text & "','" & Me.repaired1.Text & "','" & _
Me.defects2.Text & "','" & Me.repaired2.Text & "','" & _
Me.defects3.Text & "','" & Me.repaired3.Text & "','" & _
Me.datefixed.Text & "')"
cmd.ExecuteNonQuery()
Else
cmd.CommandText = "UPDATE vehicledefects" & _
" SET Codenumber =" & Me.IdentificationNotest.Text & _
", vehiclereg ='" & Me.vehiclereg.Text & "'" & _
", datereported ='" & Me.datereported.Text & "'" & _
", defects1 ='" & Me.defects1.Text & "'" & _
", repaired1 ='" & Me.repaired1.Text & "'" & _
", defects2 ='" & Me.defects2.Text & "'" & _
", repaired2='" & Me.repaired2.Text & "'" & _
", defects3='" & Me.defects3.Text & "'" & _
", repaired3='" & Me.repaired3.Text & "'" & _
", datefixed='" & Me.datefixed.Text & "'" & _
" WHERE Codenumber =" & Me.IdentificationNotest.Tag
cmd.ExecuteNonQuery()
End If
refreshdata()
Me.btnclear.PerformClick()
cnn.Close()
datefixed.Text = ""
IdentificationNotest.Text = ""
End Sub

Answer 1

In the future, you should also post the line number the error is being thrown on.
The error is telling you that you're doing something like:
dim myString as String = myTextBox & " some more text"
in this case, you would need to do:
dim myString as String = myTextBox.Text & " some more text"
In the code you posted, I wasn't able to find an instance of this - so perhaps its somewhere else in the code. Though, the code was hard to read so I may have missed it.
You may also be aware that this code is susceptible to SQL Injection attacks