How can I add an item to a ListBox in C and WinForms

Question

I m having trouble figuring out how to add items to a ListBox in WinForms   I have tried   list DisplayMember    clan   list ValueMember   sifOsoba    How can I add ValueMember to the list with an int value and some text for the DisplayMember   list Items add      Btw  I can t use ListBoxItem for any reasons

User · Answer

DisplayMember and ValueMember are mostly only useful if you're databinding to objects that have those properties defined. You would then need to add an instance of that object.

e.g.:

public class MyObject
{
     public string clan { get; set; }
     public int sifOsoba { get; set; }
     public MyObject(string aClan, int aSif0soba)
     {
        this.clan = aClan;
        this.sif0soba = aSif0soba;
     }

     public override string ToString() { return this.clan; }
 }

 ....

 list.Items.Add(new MyObject("hello", 5));

If you're binding it manually then you can use the example provided by goggles

User · Answer

If you just want to add a string to it  the simple answer is    ListBox Items Add  some text

User · Answer

The way I do this - using the format Event    MyClass c   new MyClass      listBox1 Items Add c      private void listBox1 Format object sender  ListControlConvertEventArgs e                if e ListItem is MyClass                        e Value     MyClass e ListItem  ToString                      else                       e Value    Unknown item added                     e Value being the Display Text  Then you can attempt to cast the SelectedItem to MyClass to get access to anything you had in there  Also note  you can use anything  that inherits from object anyway which is pretty much everything   in the Items Collection

User · Answer

You might want to checkout this SO question   C  - WinForms - What is the proper way to load up a ListBox

User · Answer

In WinForms  ValueMember and DisplayMember are used when data-binding the list  If you re not data-binding  then you can add any arbitrary object as a ListItem    The catch to that is that  in order to display the item  ToString   will be called on it  Thus  it is highly recommended that you only add objects to the ListBox where calling ToString   will result in meaningful output

User · Answer

You have to create an item of type ListBoxItem and add that to the Items collection   list Items add  new ListBoxItem  clan    sifOsoba

User · Answer

If you are adding integers  as you say in your question  this will add 50  from 1 to 50    for  int x   1  x  lt   50  x         list Items Add x       You do not need to set DisplayMember and ValueMember unless you are adding objects that have specific properties that you want to display to the user   In your example   listbox1 Items Add new   clan    Foo   sifOsoba   1234

User · Answer

list Items add new ListBoxItem  name    value       The internal  default  data structure of the ListBox is the ListBoxItem

User · Answer

ListBoxItem is a WPF class  NOT a WinForms class       For WPF  use ListBoxItem     For WinForms  the item is a Object type  so use one of these  1  Provide your own ToString   method for the Object type  2  Use databinding with DisplayMemeber and ValueMember  see Kelsey s answer

[c#] How can I add an item to a ListBox in C# and WinForms?

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