Incorrect syntax near ')'. ASP.net C# and sql

Hej

jeg har probler med at jeg får Incorrect syntax near ')'. med linen myCommand.ExecuteNonQuery();


Kode

    protected void OKButton_Click(object sender, EventArgs e)
    {

        if (MenunrText.Text == InScan)
        {
            SqlConnection myConnection = new SqlConnection(conn);
            myConnection.Open();

            SqlCommand myCommand = new SqlCommand("INSERT INTO TblIndUD(SN, IndOutScan, WhoIn, DTIn, StockStatus,) VALUES('" + SerienrText.Text + "','IN', '" + MnrTxt.Text + "'," + DT.ToString("MM/dd/yyyy HH:mm:ss") +" ', 'In stock')", myConnection);
            myCommand.ExecuteNonQuery();
            myConnection.Close();
        }
}