Thread: Checkboxlist selected property

hi guys
i want to use checkboxlist.selecteditem.selected property.

when i clicked the checkbox a int value must be written to db, when i clicked again the checkbox this value must be changed.

i wrote code like that but i have error -> Object reference not set to an instance of an object

what can i do? i m waiting your answers...

i dont think i m using a null reference, cause when i clicked the random checkbox the element's informations come

my code is below

Code:

if (cblNames.SelectedItem == null)
            {
                if (cblNames.SelectedItem.Selected==true)    //ERROR OMES HERE   (Object reference not set to an instance of an object)
                {
                    OleDbCommand com = new OleDbCommand("UPDATE kisi SET kisi_check=@p1 where kisi_id=@id", connect);
                    com.Parameters.AddWithValue("@id", cblNames.SelectedValue);
                    com.Parameters.AddWithValue("@p1", 1);
                    com.ExecuteNonQuery();
                }

                else if (cblNames.SelectedItem.Selected == false)
                {
                    OleDbCommand ucom = new OleDbCommand("UPDATE kisi SET kisi_check=@pc WHERE kisi_id=@i", connect);
                    ucom.Parameters.AddWithValue("@i", cblNames.SelectedValue);
                    ucom.Parameters.AddWithValue("@pc", 0);
                    ucom.ExecuteNonQuery();
                }
            }

ok thats right then i remove

Code:

if (cblNames.SelectedItem == null)

but there is the same error on the same line

yess that works

thanks spidey