Sorting CheckedListBox for selected items in the list

Question

Hello I am new to this forum and C# in general. I have a CheckedListBox control that I would like to sort for selected items and then all the following unselected items would be sorted alphabetically. In other words the selected items would appear at the top of the list in the GUI (and don't necessarily have to be in alphabetical order) and then all the unchecked items after this would be in alphabetical order. Any suggestions for going about this would be great. Also if this has already been done by someone a point in the right direction (code example) would be greatly appreciated. Thanks in advance for any help. Newell

Newell Jensen · Answer

Thanks guys! I have been busy with some other projects but I think this will work. I will reply again if I run into anything else. Newell

Jan Montano · Answer

Hi Newell Here you go private void button2_Click(object sender EventArgs e) { List checkedItems = new List (); List uncheckedItems = new List (); List mySortedArray = new List (); // iterate the list by using index starting from zero. for (int index = 0; index { if (checkedListBox1.GetItemCheckState(index) == CheckState.Checked) { // store checked items checkedItems.Add(checkedListBox1.Items[index].ToString()); } else { // store unchecked items uncheckedItems.Add(checkedListBox1.Items[index].ToString()); } } //checkedItems.Sort(); uncheckedItems.Sort(); mySortedArray.AddRange(checkedItems); mySortedArray.AddRange(uncheckedItems); // all we have to do is display this in your list. checkedListBox1.Items.Clear(); foreach (string value in mySortedArray) { checkedListBox1.Items.Add(value); } }

Brandon Lewis · Answer

You would have to run a check and check each object in the list box to see if its checked or not load the objects that are checked into an ArrayList and then sort the ArrayList and use a for each structure to redistribute the items into the list box sorted while manually removing each instance of a checked item. Sounds complicated but its not too bad...

Jan Montano · Answer

I don't think there's a built-in function for you requirement. You would manually have to do the sorting.