mes-client/UAS-出货标签管理/CustomControl/PrinterCombox.cs

using System;
using System.Windows.Forms;
using System.Drawing.Printing;

namespace UAS_LabelMachine.CustomControl
{
    public partial class PrinterCombox : UserControl
    {
        public PrinterCombox()
        {
            InitializeComponent();
        }
        public delegate void OnSelectIndexChange(object sender, EventArgs e);

        public event OnSelectIndexChange UserOnSelectIndexChange;

        public override string Text
        {
            get
            {
                return PrinterList.Text;
            }

            set
            {
                PrinterList.Text = value;
            }
        }

        bool Loading = true;

        private void PrinterCombox_Load(object sender, EventArgs e)
        {
            PrintDocument print = new PrintDocument();
            string sDefault = print.PrinterSettings.PrinterName;//默认打印机名
            foreach (string sPrint in PrinterSettings.InstalledPrinters)//获取所有打印机名称
            {
                PrinterList.Items.Add(sPrint);
                if (sPrint == sDefault)
                    PrinterList.SelectedIndex = PrinterList.Items.IndexOf(sPrint);
            }
            Loading = false;
        }

        private void PrinterList_SelectedIndexChanged(object sender, EventArgs e)
        {
            if (!Loading)
                UserOnSelectIndexChange.Invoke(sender, e);
        }
    }
}