Cloning

Cloning

• fddsfsdf

  Thanks that helps.

  In regards to the second part

  I was populating them all (from a database) in the load event but this takes too much time. so I only want to populate the cbo if its selected, but I am not sure in which event to do this.

  
  

• mvsure

  Not extactly,

  In the Form_Load event

  cboA will be populated from a database

  cboB will be empty

  if cboB is selected I want to populate from cboA.

  Its where (if cboB is selected ). that I need to know where to put

  foreach(object curObject in this.theComboBoxSource.Items)
  {
  this.theComboBoxDestination.Items.Add(curObject);
  }
  

  I also only want to populate cboB once, even if the selected index is changed .

  
  

• Devi48354

  hmm am I correct in saying that if we have a combobox with items already in them, if it is selected, you then want to populate the items on another combobox AFTER you select the item from the first combobox
  
  

• C. Charpentier

  OK, well, just check to see the number of items items in comboboxB.

  If number of items == 0 then populate

  //SelectIndexChanged Event if (this.comboBoxB.Items.Count == 0) { //populate data/copy/whatever }

  does this help

  
  
  

• Michael G. Emmons

  Thanks that helped but it didnt work when in the selectedindexchanged event

  I works when in the dropdown event.

  
  

• tfavier

  if the combobox is empty, check the number of items stored:

  this.theComboBox.Items.Count

  how exactly do you mean "clone" do you mean copy contents of 1 combo box into another if so, just loop through the items and copy them over to the desired combobox. Example:

  foreach(object curObject in this.theComboBoxSource.Items) { this.theComboBoxDestination.Items.Add(curObject); }

  I don't quite understand this part, are you able to ask a bit more

  After the first only I only want to load the data when the cbo is selected

  Do you mean loading data from a file/database

  
  
  
• Cloning