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C#-Quelltext

using System;
using System.Windows.Forms;

namespace Cbo_item
{    
    public class Element
    {
        public string eName { get; set; }
        public int eValue { get; set; }

        public Element(string Name, int Value)
        {
            eName = Name;
            eValue = Value;
        }
    }

    public partial class Form1 : Form
    {
        Element Alpha = new Element("Alpha", 10);
        Element Beta = new Element("Beta", 20);
        Element Gamma = new Element("Gamma", 30);
        Element Delta = new Element("Delta", 40);

        public Form1()
        {
            InitializeComponent();
            cbo_Elements.Items.Add(Alpha);
            cbo_Elements.Items.Add(Beta);
            cbo_Elements.Items.Add(Gamma);
            cbo_Elements.Items.Add(Delta);
        }


        private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
        {
            int item = cbo_Elements.SelectedIndex;
            txt_Output.Text = cbo_Elements.Items[item].eValue.ToString();
        }
    }
}

C#-Quelltext

txt_Output.Text = (Element)cbo_Elements.Items[item].eValue.ToString();

C#-Quelltext

....Items[item].

C#-Quelltext

            int item = cbo_Elements.SelectedIndex;
            Element temp = (Element)cbo_Elements.SelectedItem;
            txt_Output.Text = temp.eValue.ToString();