System.Data.SqlClient.SqlException: Incorrect syntax near ''
<pre><code>cmd.Connection = con;
con.Open();
cmd.CommandText = "Update tiit.Enquiry Set Status='" + DropDownList4.SelectedValue + "', NextFollowup='" + TextBox8.Text + "', Remarks='" + TextBox9.Text + "', Name='" + TextBox1.Text + "', Email='" + TextBox2.Text + "', Phone='" + TextBox3.Text + "','','','','', City='" + TextBox4.Text + "', Country='" + TextBox5.Text + "', Course='" + TextBox6.Text + "', Comments='" + TextBox7.Text + "', Cost='" +TextBox14.Text+ "' where SN='" + HiddenField1.Value + "'";
int i = cmd.ExecuteNonQuery();
con.Close();
</code></pre>
