Question

I have one form in a Windows application as per below image:

I try to use this code to display text in comboBox in “Designer.cs”:

this.cmbLanguage.FormattingEnabled = true;
this.cmbLanguage.Items.AddRange(new object[] {
    Language.LSelectLang.LANGUAGE_ENGLISH,               //"English",
    "Chinese_TC",
    "Chinese_SC",
    Language.LSelectLang.LANGUAGE_GERMAN,                //"German",
    Language.LSelectLang.LANGUAGE_FRENCH,                //"French",
    Language.LSelectLang.LANGUAGE_JAPANESE,              //"Japanese",
    Language.LSelectLang.LANGUAGE_SPANISH,               //"Spanish",
    Language.LSelectLang.LANGUAGE_HINDI});               //"Hindi"});

It’s OK with it, but I want to also pass a value type to access specific text display in combo box.

So, how to pass that in my combo box?

Answer 1

Unluckily, Win Form does not define ListItem like Web, but you can define your own class, then override ToString method:

public class YourItem<T>
{
    public string Text { get; set; }
    public T Value { get; set; }

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

Then you can use:

var item = new YourItem<string>() { 
             Text = "text", 
             Value = "value" 
       };

cmbLanguage.Items.Add(item);

To access value:

    var selectedItem = (YourItem<string>) cmbLanguage.SelectedItem;
    var value = selectedItem.Value;