RadioDld.ChooseCols.ChooseCols_Load C# (CSharp) Method

        private void ChooseCols_Load(object sender, EventArgs e)
        {
            if (this.columnOrder == null)
            {
                throw new InvalidOperationException("Column order is not set");
            }
            else if (this.columnNames == null)
            {
                throw new InvalidOperationException("Column names are not set");
            }

            this.Font = SystemFonts.MessageBoxFont;

            // Add the current columns to the top of the list, in order
            foreach (int column in this.columnOrder)
            {
                ListViewItem addCol = new ListViewItem(this.columnNames[column]);
                addCol.Name = column.ToString(CultureInfo.InvariantCulture);
                addCol.Checked = true;

                this.ListColumns.Items.Add(addCol);
            }

            // Add the rest of the columns to the list in their defined order
            foreach (int column in this.columnNames.Keys)
            {
                if (!this.columnOrder.Contains(column))
                {
                    ListViewItem addCol = new ListViewItem(this.columnNames[column]);
                    addCol.Name = column.ToString(CultureInfo.InvariantCulture);
                    addCol.Checked = false;

                    this.ListColumns.Items.Add(addCol);
                }
            }
        }