Winfrom 简单的进度条小程序

使用Winform空间编写简单的进度条小程序：

所需控件：Lable 标签  TextBox  文本框  progressBar  进度条控件  timer 定时器

下面是源码及效果图：

  /// <summary>
         /// 进度条开始
         /// </summary>
         /// <param name="sender"></param>
         /// <param name="e"></param>
         private void btnBegin_Click(object sender, EventArgs e)
         {
             if (txtLenght.Text == "")
             {
                 return;
             }
             progressBar1.Value = ;
             progressBar1.Minimum = ;
             progressBar1.Maximum = Convert.ToInt32(txtLenght.Text);
             output("进度条开始运行");
             timer1.Enabled = true;
         }

         private void Form1_Load(object sender, EventArgs e)
         {

         }

         /// <summary>
         /// 停止按钮
         /// </summary>
         /// <param name="sender"></param>
         /// <param name="e"></param>
         private void btnStop_Click_1(object sender, EventArgs e)
         {
             output("进度条停止运行");
             timer1.Enabled = false;
             progressBar1.Value = ;
         }

         /// <summary>
         /// 日志记录
         /// </summary>
         /// <param name="log"></param>
         public void output(string log)
         {
             //如果日志信息长度超过100行自动清空
             if (txtJournal.GetLineFromCharIndex(txtJournal.Text.Length) > )
             {
                 txtJournal.Text = "";
             }
             //添加日志  AppendText向文本框的当前文本追加文本
             txtJournal.AppendText(DateTime.Now.ToString("yyyy-mm-dd hh:mm:ss") + log + "\r\n");
         }

         /// <summary>
         /// 暂停按钮
         /// </summary>
         /// <param name="sender"></param>
         /// <param name="e"></param>
         private void btnSuspend_Click(object sender, EventArgs e)
         {
             if (timer1.Enabled == true)
             {
                 output("进度条暂停运行");
                 btnSuspend.Text = "继续";
                 timer1.Enabled = false;
             }
             else
             {
                 output("进度条继续运行");
                 btnSuspend.Text = "暂停";
                 timer1.Enabled = true;
             }
         }

         /// <summary>
         /// 定时器
         /// </summary>
         /// <param name="sender"></param>
         /// <param name="e"></param>
         private void timer1_Tick(object sender, EventArgs e)
         {
             //如果进度条的当前值小于最大值，继续运行 否则，结束
             if (progressBar1.Value < progressBar1.Maximum)
             {
                 progressBar1.Value++;
                 output("进度条进行中,{" + progressBar1.Value.ToString() + " / " + progressBar1.Maximum + "}");
             }
             else
             {
                 output("进度条已完成");
                 timer1.Enabled = false;
             }
         }

效果图展示: