How Do I Stop Selected Index Changed To Work In Two Combo

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I have got 2 combo box one contain roll no. and second contain reg. no.

now when I select roll no. Im supposed to show student detail, with reg. no. in sec. combo box of that roll no. and visa-versa.

Problem is the moment it reach to cmbregno.Text = dr.GetValue(0).ToString())

it went to the cmbregno_SelectedIndexChanged method. and do process the method.

and when I search by regno. than it go the cmbRoll_SelectedIndexChanged and process that method.

How to stop other method to run when it came to that point of reading value.

Posted 29-Jan-15 23:50pm

sachees123

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CHill60 30-Jan-15 6:02am

You will need to show us the code that you are using !

BillWoodruff 30-Jan-15 11:15am

The only way you can have recursive interaction of two ComboBoxes is if both have their 'whatever_changed' EventHandlers wired together so they interact. So, show your code.

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Pikoh · Accepted Answer · 2015-01-30T00:09:00

Use a bool variabe stating if is your code who is changing the combo index,something like

C#

bool codeChanging=false;

cmbregno_SelectedIndexChanged(sender...)
{
    if (!codeChanging)
    {
       //do whatevere you are doing here now
       codeChanging=true;
       cmbrollno= dr.GetValue(0).ToString())
     }
     else
     {
        codeChanging=false;
     }

}

cmbrollno_SelectedIndexChanged(sender...)
{
    if (!codeChanging)
    {
       //do whatevere you are doing here now
       codeChanging=true;
       cmbregno= dr.GetValue(0).ToString())
     }
     else
     {
        codeChanging=false;
     }

}