INSERT on button click - error VB.Net SQL 2008


I am working through the “Build Your Own ASP.NET4 Website” book and am at the part where you build the AdmimTools.apsx page. I have it all working fine and wanted to venture out on my own and add a little additional functionality.

Essentially I have a button at the top (newEmpButton) that when clicked will clear the form of any values and enable the visibility of a new button (addEmpButton). A label also appears that tell the user to enter the informatoin and click (addEmpButton) to submit. Then the user is redirected back to the same page where the list of employees is now refreshed with the employee that was just added.

The data is not entered and I receive the “dbErrorLabel” message. I have searched the code for hours trying different things to no avail. The error resides in the addEmpButton_Click Sub.

Can anyone help me figure out what the issue is?

*Note: the @EmployeeID and @DepartmentID are assigned a value as they are not part of the form layout and cannot be Null. These values are the next incremental value in my database in this table.

Protected Sub newEmpButton_Click(sender As Object, e As System.EventArgs) Handles newEmpButton.Click

        addEmpLabel.Text = "Please enter new employee info below and click ADD EMPLOYEE<br />"

        nameTextBox.Text = ""
        userNameTextBox.Text = ""
        addressTextBox.Text = ""
        cityTextBox.Text = ""
        stateTextBox.Text = ""
        zipTextBox.Text = ""
        homePhoneTextBox.Text = ""
        extensionTextBox.Text = ""
        mobilePhoneTextBox.Text = ""

        updateButton.Enabled = False
        deleteButton.Enabled = False
        updateButton.Enabled = False
        addEmpButton.Visible = True
        addEmpButton.Enabled = True

    End Sub

    Protected Sub addEmpButton_Click(sender As Object, e As System.EventArgs) Handles addEmpButton.Click

        If Page.IsValid Then
            Dim conn As SqlConnection
            Dim comm As SqlCommand
            Dim connectionString As String = ConfigurationManager.ConnectionStrings("Dorknozzle").ConnectionString

            conn = New SqlConnection(connectionString)
            comm = New SqlCommand( "INSERT INTO Employees (EmployeeID, DepartmentID, Name, " & _
        "Username, Password, Address, City, State, Zip, HomePhone, Extension, MobilePhone) " & _
        "VALUES (@EmployeeID, @DepartmentID, @Name, @Username, @Password, @Address, @City, @State, @Zip, @HomePhone " & _
        "@Extension, @MobilePhone)", conn)

            comm.Parameters.Add("@EmployeeID", System.Data.SqlDbType.Int)
            comm.Parameters("@EmployeeID").Value = 14
            comm.Parameters.Add("@DepartmentID", System.Data.SqlDbType.Int)
            comm.Parameters("@DepartmentID").Value = 8
            comm.Parameters.Add("@Name", System.Data.SqlDbType.NVarChar, 50)
            comm.Parameters("@Name").Value = nameTextBox.Text
            comm.Parameters.Add("@Username", System.Data.SqlDbType.NVarChar, 50)
            comm.Parameters("@Username").Value = userNameTextBox.Text
            comm.Parameters.Add("@Password", System.Data.SqlDbType.NVarChar, 50)
            comm.Parameters("@Password").Value = "heather"
            comm.Parameters.Add("@Address", System.Data.SqlDbType.NVarChar, 50)
            comm.Parameters("@Address").Value = addressTextBox.Text
            comm.Parameters.Add("@City", System.Data.SqlDbType.NVarChar, 50)
            comm.Parameters("@City").Value = cityTextBox.Text
            comm.Parameters.Add("@State", System.Data.SqlDbType.NVarChar, 50)
            comm.Parameters("@State").Value = stateTextBox.Text
            comm.Parameters.Add("@Zip", System.Data.SqlDbType.NVarChar, 50)
            comm.Parameters("@Zip").Value = zipTextBox.Text
            comm.Parameters.Add("@HomePhone", System.Data.SqlDbType.NVarChar, 50)
            comm.Parameters("@HomePhone").Value = homePhoneTextBox.Text
            comm.Parameters.Add("@Extension", System.Data.SqlDbType.NVarChar, 50)
            comm.Parameters("@Extension").Value = extensionTextBox.Text
            comm.Parameters.Add("@MobilePhone", System.Data.SqlDbType.NVarChar, 50)
            comm.Parameters("@MobilePhone").Value = mobilePhoneTextBox.Text



                dberrorlabel.Text = "Error adding new employee!"

                ' Close the connection

            End Try

        End If

    End Sub

OK I am getting error: Incorrect syntax near ‘@Extension at the CATCH Block when I debug. It steps through everything else just fine but hangs up there.

Thanks for any help you can give.

Found the issue. Had a missing comma in my insert command.