The System.Globalization namespace's InstalledUICulture object provides lots of static methods giving information about the computer's numeric, date, and time formatting. This example adds a bunch of these values to a ListView control. The following code shows how the program adds just a few of the values.

private void Form1_Load(object sender, EventArgs e)
{
    // Day/Month values.
    AddHeader("Day/Month");
    AddArrayItems("Day", CultureInfo.InstalledUICulture.DateTimeFormat.DayNames);
    AddArrayItems("Abbrev Day", CultureInfo.InstalledUICulture.DateTimeFormat.AbbreviatedDayNames);
    AddArrayItems("Short Days", CultureInfo.InstalledUICulture.DateTimeFormat.ShortestDayNames);
    AddArrayItems("Month", CultureInfo.InstalledUICulture.DateTimeFormat.MonthNames);
    AddArrayItems("Abbrev Month", CultureInfo.InstalledUICulture.DateTimeFormat.AbbreviatedMonthNames);

    // Date/Time values.
    AddHeader("Date/Time Format");
    AddItem("AMDesignator", CultureInfo.InstalledUICulture.DateTimeFormat.AMDesignator);
    AddItem("DateSeparator", CultureInfo.InstalledUICulture.DateTimeFormat.DateSeparator);
    AddItem("FirstDayOfWeek", CultureInfo.InstalledUICulture.DateTimeFormat.FirstDayOfWeek.ToString());
    AddItem("FullDateTimePattern", CultureInfo.InstalledUICulture.DateTimeFormat.FullDateTimePattern);
    ...

    lvwValues.Columns[0].Width = -2;
    lvwValues.Columns[1].Width = -2;
}

Helper routines add different kinds of values to the ListView control.

// Add a header row.
private void AddHeader(string name)
{
    ListViewItem lvi = lvwValues.Items.Add(name);
    lvi.BackColor = Color.Pink;
}

// Add a value to the result.
private void AddItem(string name, string value)
{
    ListViewItem lvi = lvwValues.Items.Add(name);
    lvi.SubItems.Add(value);
}

// Add all values in an array.
private void AddArrayItems(string name, string[] values)
{
    for (int i = 0; i < values.Length; i++)
    {
        AddItem(name + "(" + i + ")", values[i]);
    }
}

// Add all values in an integer array.
private void AddIntegerArrayItems(string name, int[] values)
{
    for (int i = 0; i < values.Length; i++)
    {
        AddItem(name + "(" + i + ")", values[i].ToString());
    }
}