asked on

Checking Items in CheckListBox

Greetings,

Here's the issue. I first have users check certain items in the checklistBox, and I save thier selection in an arraylist. I store all the items in the checklistBox which should also store whichs one are checked. The problem comes when i want to repopulate the same checkListBox later from the items stored in the arraylist.

Here's the code to populate the ChecklistBox...
StreamReader myXmlStream = new StreamReader(myFileStream);
DataSet myDataSet = new DataSet();
myDataSet.ReadXml(myXmlStream);

chBook.DataSource = myDataSet.Tables[4];
chBook.DisplayMember = myDataSet.Tables[4].Columns[0].ToString();
chBook.ValueMember = myDataSet.Tables[4].Columns[1].ToString();

Here's how i store the information...
for(int i = 0; i < this.chBook.Items.Count; i++){
ls.books.Add(chBook.Items[i]);}

Now how do i repopulate the CheckListBox from the arraylist? I've tried so many things I won't even post them here.

Thanks,

aacool

You have a few declarations missing, but assuming,

ArrayList lsBooks;
CheckedListBox chBook
private void setCBValues()
{
chBook.Items.Clear();
// Populate checkedListBox with items from array
chBook.Items.AddRange(lsBooks.ToArray());
}

I have a fully working example to send you if you need it - please mail me at aacool - hotmail.com if needed

SOLUTION

aacool

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vargasbo

ASKER

aacool

What i did try your following suggestion, but it didn't work. What shows up in the CheckedListBox is System.DataView..

DataRowView []oCheckedItems= new DataRowView[ls.books.Count];
ls.books.CopyTo(oCheckedItems,0);
chBook.DataSource = null; //Have to remove Datasource otherwise can't edit items
chBook.Items.AddRange(ls.books.ToArray());

Why can't i just save the items in the list with it's checked status? This is the code I'm using which shows the item name, but it doesn't show it's checked state.

for(int x = 0; x < oCheckedItems.Length; x++) {
chGrade.Items.Add(oCheckedItems[x].Row[0]);}

SOLUTION

aacool

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ASKER CERTIFIED SOLUTION

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vargasbo

ASKER

for(int i=0;i<chBook.Items.Count;i++)
{
CheckedItem chItem = new CheckedItem();
chItem.text = chBook.Items[i].Text; <---- Can't do this
(chBook.Items[i].CheckState=CheckState.Checked) ? chItem.itemState=true : chItem.itemState = false; <<< --- or this
chItemsArray[i++] = chItem;
chItem.Dispose();
}

Have to uses DataRowView b/c the CheckListBox is tied to a Datasource, That why i can't uses the chBook.Items[i].Text.

vargasbo

ASKER

OK, I finally got the code to work and here's the code

When Items first saves....

for(int i = 0; i < this.chBook.Items.Count; i++){

CheckedItems chItem = new CheckedItems();
chItem.text = ((DataRowView)chBook.Items[i]).Row[0].ToString();
chItem.check = chBook.GetItemChecked(i);
ls.books.Add(chItem);
chItem = null;
}

When repopulating the form
chBook.DataSource = null;
for(int x = 0; x < ls.books.Count; x++) {
if(((CheckedItems)ls.books[x]).check == true)
      chBook.Items.Add(((CheckedItems)ls.books[x]).text,true);
      else
      chBook.Items.Add(((CheckedItems)ls.books[x]).text,false);
}

Thanks for the help