How to refire selectedindex event of combobox in c#

ginny999 · November 16th, 2009, 06:34 AM

Hello all
i am developing a window application using vs2008

at this moment i want to re-fire selected index event of a combo box upon hitting a button.

the combo box belongs to dropdownlist type.

what is appropriate way to do this ?

thanks

samjudson · November 16th, 2009, 06:39 AM

The easiest way is to simply refactor your code so the OnSelectedIndexChanged event calls a method, and then call the method in the Button OnClick event as well.

Alternatively you can call an event method exactly like any other method:

Code:

   Combo1_SelectedIndexChanged(null, EventArgs.Empty);

ginny999 · November 16th, 2009, 10:21 AM

hmmm thanks for your reply but this is not what i was looking for.

in fact, upon hitting a button i want to reload combo box as it was on form load & as i had said earlier this belongs to drop down list (not drop down) so i couldn't apply combo1.text="";

i want to set combo to its default selected item (that is blue bar).

i am sorry if i gave wrong information earlier :(

samjudson · November 16th, 2009, 10:29 AM

Well a DropDownList must always have an item selected, so you just need to set the SelectedIndex to whichever item is the 'default' - e.g. the first one:

DropdownList1.SelectedIndex = 0;

whiterainbow · April 6th, 2011, 07:59 AM

Bind the data to the combo box using a separate private function and call the same in the Form_Load as well on the button_click. If you want to set the selected value at the form_load set the selectedindex=0 and on the button_click loop through the records in the combobox to find the value you want to set the focus with and assign the index of that item to the selectedindex property.