AsterixDisplayAnalyser.FormMain.textBoxSSRCode_TextChanged C# (CSharp) Метод

        private void textBoxSSRCode_TextChanged(object sender, EventArgs e)
        {
            if (this.textBoxSSRCode.Text.Length == 4)
            {
                if (this.comboBoxSSRFilterBox.Enabled)
                {
                    PopulateSSRCodeLookup();
                    int Index = 0;
                    foreach (var Item in this.comboBoxSSRFilterBox.Items)
                    {
                        if (this.textBoxSSRCode.Text == Item.ToString())
                        {
                            this.comboBoxSSRFilterBox.SelectedIndex = Index;
                            break;
                        }
                        Index++;
                    }

                }
                Update_PlotTrack_Data();
            }
        }