who is wrong me or ADO ? {Sorted }

[Pirate]

I am using this code to save info written in textboxes to db .Everything seem to be fine but I don't know why it keeps throwing error saying "error in insert syntax "
the error happens while reaching update line.
Help plz

Private Sub Button1_Click(ByVal sender As System.Object, _ 
 ByVal e As System.EventArgs) Handles Button1.Click
 
        Dim MySQLStr As String = "Select * From MyTab"
        Dim Mypath As String = Application.StartupPath & "\webdb.mdb"
        Dim MyCon As New OleDbConnection _ 
("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & Mypath)
        Dim myadap As New OleDb.OleDbDataAdapter(MySQLStr, MyCon)
        Dim objCmdBld As New OleDb.OleDbCommandBuilder(myadap)
        Dim ds As DataSet = New DataSet()
        MyCon.Open()
 
        myadap.Fill(ds, "mytab")
        Dim MyDataRow As DataRow = ds.Tables("mytab").NewRow
 
        MyDataRow("URL") = Trim(TextBox1.Text)
        MyDataRow("Category") = Trim(TextBox2.Text)
        MyDataRow("Language") = Trim(TextBox3.Text)
        MyDataRow("UserName") = Trim(TextBox4.Text)
        MyDataRow("Password") = Trim(TextBox5.Text)
        MyDataRow("Comment") = Trim(TextBox6.Text)
        MyDataRow("last") = Trim(TextBox7.Text)
 
        ds.Tables("MyTab").Rows.Add(MyDataRow)
        Try
            myadap.Update(ds, "mytab")
        Catch x As Exception
            MsgBox(x.Message)
        End Try
        MyCon.Close()
    End Sub