Combo box in c# windows application

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Hi all
How can i fill items in my combobox and display selected item values in label !!!!
For ex:
Display text ( year1,year2)
Values ( 2015,2016)

When i choose year1 from combobox the label will display 2015
And so on
Please help me
Thanks alot

Posted 11-Nov-15 11:02am

sam9787

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2 solutions

Solution 2

Please follow below steps achieve the same:

Step1: Create a custom class for ComboBox Listitem

C#

public class ComboboxItem
{
    public string Text { get; set; }
    public object Value { get; set; }
}

Step2: Create object of custom class(ComboboxItem) and add those objects to ComboBox

C#

ComboboxItem item = new ComboboxItem();
item.Text = "year1";
item.Value = "2015";
comboBox1.Items.Add(item);

item = new ComboboxItem();
item.Text = "year2";
item.Value = "2016";
comboBox1.Items.Add(item);

comboBox1.DisplayMember = "Text";
comboBox1.ValueMember = "Value";

Step3: On button click get the selected value of ComboBox

C#

private void button1_Click(object sender, EventArgs e)
{
   label1.Text = (comboBox1.SelectedItem as ComboboxItem).Value.ToString();
}

Posted 11-Nov-15 19:12pm

Manas_Kumar

Comments

sam9787 7-Oct-16 15:59pm

but how can i get all checked values in my checkboxlist ?
something like that but it doesnt work
it is always get 2016
for (int i = 0; i < checkedListTrainingRoom.Items.Count; i++)
if (checkedListTrainingRoom.GetItemChecked(i))
{
label1.Text = (checkedListTrainingRoom.SelectedItem as ComboboxItem).Value.ToString();

}

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BillWoodruff · Accepted Answer · 2015-11-11T14:25:00

A convenient way to do this is to bind the ComboBox to a generic Dictionary as a DataSource:

C#

//required

using System;
using System.Collections.Generic;
using System.Windows.Forms;

private void Form1_Load(object sender, EventArgs e)
{
    Dictionary<string, string> ComboEntries = new Dictionary<string, string>
    {
       {"year1, year2", "2015, 2016"},
       {"year3, year4", "2017, 2018"}
    };

    comboBox1.DataSource = new BindingSource(ComboEntries, null);
    comboBox1.DisplayMember = "Key";
    comboBox1.ValueMember = "Value";
}

private void comboBox1_SelectedValueChanged(object sender, EventArgs e)
{
    label1.Text = string.Format("Value selected: {0}", comboBox1.SelectedValue);
}