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读取txt文件加DevExpress之进度条progressBarControl

2017-08-10 11:00 本站整理 浏览(15)

进度条使用 主要掌握下边几个命令, 

 //水平进度条
progressBarControlH.Properties.Minimum = 0;
//1:设置最大数量,比如读取txt文件内容,先要查出行数,然后给maxinum赋值,此处是进度条的最大容量. progressBarControlH.Properties.Maximum = 100;
//2: 进度条的进度,读取一行,内部自动计算的
   while (sr.Peek() > -1)
                    {
                        line = sr.ReadLine().ToString().Replace("\r\n", "");
                        //跳过行空格
                        if (line.Trim() != "")
                        {
                         //   progressBarControlH.Text = "开始过滤字段生成文件.....";
                         
                            //      System.Threading.Thread.Sleep(120);
                               progressBarControlH.PerformStep();
                       //     progressBarControlH.Position += 1;
                            //    progressBarControlH.EditValue = i + 1;
                            //处理当前消息队列中的所有windows消息,不然进度条会不同步
                            System.Windows.Forms.Application.DoEvents();
......................}

下边是所有的步骤,

1:初始化进度条 ,最大值等查完txt行数赋值.

    private void panelControl1_Paint(object sender, PaintEventArgs e)
        {
            //水平进度条
            progressBarControlH.Properties.Minimum = 0;
            //progressBarControlH.Properties.Maximum = 2000000;
            progressBarControlH.Properties.Step = 1;
            progressBarControlH.Properties.ProgressViewStyle = DevExpress.XtraEditors.Controls.ProgressViewStyle.Solid;
            progressBarControlH.Position = 0;
            progressBarControlH.Properties.ShowTitle = true;
            progressBarControlH.Properties.PercentView = true;
            progressBarControlH.Properties.ProgressKind = DevExpress.XtraEditors.Controls.ProgressKind.Horizontal;
        }

2:读取text行数

    int CalculateCount(string filepath)
        {
            //定义一个变量
            int lineCount = 0;
            //文件路径
         //   string path = @"D:\SQL.txt";
            try
            {
                using (StreamReader sr = new StreamReader(filepath))
                {
                    //循环读取
                    while (sr.Peek() >= 0)
                    {
                        sr.ReadLine();
                        lineCount++;
                    }
                }
                return lineCount;
            //    this.label1.Text = "文件行数为:" + lineCount.ToString();
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.ToString());
                return 0;
            }
        }

3:赋值进度条最大值,并开始统计进度

   int count= CalculateCount(file);
                    lblcount.Visible = true;
                    lblcount.Text = count.ToString();
                    progressBarControlH.Properties.Maximum = count;
                    //删除后缀 存入files类Filename属性 ,后用于存在word第一行                 
                    StreamReader sr = new StreamReader(file, System.Text.Encoding.Default);
                    //    filecontents = new Queue<FileContent>();
                    String line;
                    // while (sr.EndOfStream!=true)
                    StringBuilder sb = new StringBuilder();
                    while (sr.Peek() > -1)
                    {
                        line = sr.ReadLine().ToString().Replace("\r\n", "");
                        //跳过行空格
                        if (line.Trim() != "")
                        {
                         //   progressBarControlH.Text = "开始过滤字段生成文件.....";
                         
                            //      System.Threading.Thread.Sleep(120);
                               progressBarControlH.PerformStep();

                       //     progressBarControlH.Position += 1;
                            //    progressBarControlH.EditValue = i + 1;
                            //处理当前消息队列中的所有windows消息,不然进度条会不同步
                            System.Windows.Forms.Application.DoEvents();

帮助文件

progressBarControl和marqueeProgressBarControl

一.progressBarControl

progressBarControl是一个进度条控件

几个重要参数

Minimum------------------进度最小数值

Maximum-----------------进度最大数值

Step----------------------每走一步的数值

Position ------------------当前值

EditValue-----------------编辑值

ProgressViewStyle--------样式(其实我没看出什么区别)

ShowTitle-----------------是否显示标题(没有设置显示百分比的时候一般显示value值)

PercentView---------------是否显示百分比(需要ShowTitle为true)

ProgressKind-------------进度条方向(横向/纵向),这只是进度的显示方向,具体控件还要自己把它拉成横向或者纵向

TextOrientation-----------进度条文本显示方向(横向/纵向)

方法

PerformStep() -----------进度条前进一步

添加两个进度条,一个横向,一个纵向,并初始化一下参数

复制代码
            //水平进度条
            progressBarControlH.Properties.Minimum = 0;
            progressBarControlH.Properties.Maximum = 100;
            progressBarControlH.Properties.Step = 1;
            progressBarControlH.Properties.ProgressViewStyle = DevExpress.XtraEditors.Controls.ProgressViewStyle.Solid;
            progressBarControlH.Position = 0;
            progressBarControlH.Properties.ShowTitle = true;
            progressBarControlH.Properties.PercentView = true;
            progressBarControlH.Properties.ProgressKind = DevExpress.XtraEditors.Controls.ProgressKind.Horizontal;
            


            //垂直进度条
            progressBarControlV.Properties.Minimum = 0;
            progressBarControlV.Properties.Maximum = 100;
            progressBarControlV.Properties.Step = 1;
            progressBarControlV.Properties.ProgressViewStyle = DevExpress.XtraEditors.Controls.ProgressViewStyle.Solid;
            progressBarControlV.Position = 0;
            progressBarControlV.Properties.ShowTitle = true;
            progressBarControlV.Properties.PercentView = true;
            progressBarControlV.Properties.ProgressKind = DevExpress.XtraEditors.Controls.ProgressKind.Vertical;
            progressBarControlV.Properties.TextOrientation = DevExpress.Utils.Drawing.TextOrientation.Horizontal;
复制代码

当把进度条设置为纵向的时候一般需要Title或者百分比的显示还是横向的,这样看起来才舒服,所以要设置一下TextOrientation属性

调用代码:

复制代码
            for (int i = 0; i < 100; i++)    
            {
                
                
                System.Threading.Thread.Sleep(120);
                progressBarControlH.PerformStep();
                progressBarControlV.PerformStep();
                //progressBarControl1.Position +=1;
                //progressBarControl1.EditValue = i + 1;
                //处理当前消息队列中的所有windows消息,不然进度条会不同步
                System.Windows.Forms.Application.DoEvents();
            }
            progressBarControlH.EditValue = 0;
            progressBarControlV.EditValue = 0;
复制代码

让进度条移动有三种方式

1.改变Position的值

2.改变EditValue的值

3.用PerformStep方法

不过要注意的是,这三种方式后面都要加上System.Windows.Forms.Application.DoEvents(),就是每次改变进度的时候都要让windows处理当前队列的消息,以确保进度条同步,否则可能出现进度条的数据更改了,可是进度没有动的情况

二.marqueeProgressBarControl

marqueeProgressBarControl用起来比较简单,但是没有ProgressBarControl的显示进度和百分比的功能

复制代码
       marqueeProgressBarControlH.Properties.ProgressKind = DevExpress.XtraEditors.Controls.ProgressKind.Horizontal;
            marqueeProgressBarControlH.Properties.ShowTitle = true;
            marqueeProgressBarControlH.Text = "横向读取数据中,请稍等。。。。";

            marqueeProgressBarControlV.Properties.ProgressKind = DevExpress.XtraEditors.Controls.ProgressKind.Vertical;
            marqueeProgressBarControlV.Properties.ShowTitle = true;
            marqueeProgressBarControlV.Text = "纵向数据读取中,请稍等";
            marqueeProgressBarControlV.Properties.TextOrientation = DevExpress.Utils.Drawing.TextOrientation.VerticalUpwards;
复制代码

最后效果