tijian_tieying/winform/cn.xinelu.MedicalCheckup.Client/Printer/frmMsg.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace cn.xinelu.MedicalCheckup.Client.Printer
{
    public partial class frmMsg : Form
    {
        public frmMsg()
        {
            InitializeComponent();
            OutPutString("开始下载……");
        }




        #region
        public void OutPutString(string str)
        {
            if (this.InvokeRequired)
            {
                this.Invoke(new MethodInvoker(delegate
                {
                    OutputX(str);



                }));
                return;
            }
            else
            {
                OutputX(str);
            }
            Application.DoEvents();
        }
     
        void OutputX(string str)
        {
            this.richTextBox1.AppendText("- - - - - - - - - - - - - - - - -\r\n");
            Application.DoEvents();
            this.richTextBox1.AppendText(str + "\r\n");
            Application.DoEvents();
            this.richTextBox1.Select(richTextBox1.Text.Length, 0);
            Application.DoEvents();
            this.richTextBox1.ScrollToCaret();
            Application.DoEvents();

            if (richTextBox1.Text.Length > 10000)
                richTextBox1.Clear();
            Application.DoEvents();
        }
        #endregion
    }
}