Get stuff outside your foreach loop.

Question

4.00/5 (1 vote)

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Update:

My question:
I add all the diffrent notes in into a combobox (with the foreach loop). When I select a "note" from the combobox I want to display for example the title or content of the specific note that I selected in the combobox. But how can I acces my note outside the foreach loop?

Hello,

How do I get the a specific note.Title to work outside the foreach loop??

See my code below.

NoteFinder.class

class NoteFinder
{
    private List<Notes> allNotes;

    public List<Notes> GetAllNotesPerUser()
    {
        allNotes = new List<Notes>();

        MySqlDataReader reader = Database.ReaderMeatMill("select * from notes where who = '" + Static.ID + "'");

        while (reader.Read())
        {
            Notes note = new Notes();

            note.id = reader.GetInt32("id");
            note.who = reader.GetInt32("who");
            note.title = Encrypt.DecryptData(reader.GetString("title"));
            note.content = Encrypt.DecryptData(reader.GetString("content"));

            allNotes.Add(note);
        }

        return allNotes;
    }
}

frmMain.form

private void notesBox_SelectedIndexChanged(object sender, EventArgs e)
{
    // noteTitleBox.Text = note.Title; // How do I get this working?
}

// ------------
// Methodes:
// ------------
public override void Refresh()
{
    noteComboBox.Items.Clear();
    noteTitleBox.Clear();
    contentTextBox.Clear();

    // Combobox weer vullen.
    foreach (Notes note in nFinder.GetAllNotesPerUser())
    {
        noteComboBox.Items.Add(note.title);
    }
}

Thanks.

Posted 13-Jun-11 2:44am

kZR

Updated 13-Jun-11 3:01am

v2

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Wayne Gaylard · Accepted Answer · 2011-06-13T03:15:00

First off you need to declare a form level Notes variable, call it selectedNote. Then you need to actually bind the ComboBox to the List<notes> like this

C#

noteComboBox.Items.Clear();
            NoteFinder nFinder = new NoteFinder();
            noteComboBox.DataSource = nFinder.GetAllNotesPerUser();
            noteComboBox.DisplayMember = "title";

then in your selection changed event you can just cast the selected item as a note and then assign the title like this

C#

private void noteComboBox_SelectedIndexChanged(object sender, EventArgs e)
        {
            ComboBox cbo = sender as ComboBox;
            selectedNote = cbo.SelectedItem as Notes;
            noteTitleBox.Text = selectedNote.title;
        }

Hope this helps

#realJSOP · Accepted Answer · 2011-06-13T02:56:00

Solution 1

I don't really know what you're asking, but if you add a ToString() method to your Note object, and then just add the note itself to the combobox, you have access to the entire note object from the combobox (because the Items collection is a collection of Note objects instead of just strings).

C#

public class Note
{
    public string Title { get; set; }

    public override string ToString()
    {
        return Title;
    }
}

Again, your question isn't all that clear.

Posted 13-Jun-11 2:56am

#realJSOP

Comments

kZR 13-Jun-11 9:02am

Updated question. :)

#realJSOP 13-Jun-11 9:07am

My answer is correct then. Instead of using ComboBox.SelectedValue, use ComboBox.SelectedItem and cast it to a Note object. At that point, you have access to the entire Note object and not just the title.

kZR 13-Jun-11 9:08am

But how can I accomplish this?