WPF Visifire使用

大家好，又见面了，我是你们的朋友全栈君。

由于项目中需要使用Visifire所以自己就写了一些demo，大家一起共享！

基础Visifire图表的展示

1.Visifire的创建需要引用的DLL包【WPFToolkit.dll;WPFVisifire.Charts;WPFVisifire.Gauges(这个以后会用到)】

2.我们开始创建简单的Visifire图表

第一步：前台代码

<Window x:Class="Wpf_Tray.VisifireWindow"        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"        xmlns:vc="clr-namespace:Visifire.Charts;assembly=WPFVisifire.Charts"        Title="VisifireWindow" Height="378" Width="536" WindowStartupLocation="CenterScreen">    <Grid Name="LayoutRoot">      <vc:Chart Name="chart" DockPanel.Dock="Left" Margin="0,40,0,2" />      <Button Content="showChartData" Height="23" HorizontalAlignment="Left" Margin="24,8,0,0" Name="btn_showChartData" VerticalAlignment="Top" Width="97" Click="btn_showChartData_Click" />       <Button Content="ExportToPng" Height="23" HorizontalAlignment="Left" Margin="134,8,0,0" Name="btn_ExportToPng" VerticalAlignment="Top" Width="88" Click="btn_ExportToPng_Click" />        <Button Content="ExportChart" Height="23" HorizontalAlignment="Left" Margin="233,8,0,0" Name="btn_ExportChart" Click="btn_ExportChart_Click" VerticalAlignment="Top" Width="75" />    </Grid></Window>

写完后的一个显示效果，如图;

第二步：

实现后台绑定数据，上代码：

/// <summary>        /// 绑定数据        /// </summary>        private void BindData()        {            DataSet ds = DBSQLHelper.Search("select * from hospitalorg",null, CommandType.Text);            BindChart(ds.Tables[0]);        }

#region 绑定界面上的Chart
        /// <summary>
        /// 绑定界面上的Chart
        /// </summary>
        /// <param name="dt">Chart数据源</param>
        public void BindChart(DataTable dtChart)
        {
            //绑定Chart
            this.chart.Series.Clear();
            this.chart.Titles.Clear();
 
            this.chart.AnimationEnabled = true;
            this.chart.ThemeEnabled = true;
            this.chart.Width = 500;
            this.chart.Height = 300;
 
            //使Chart显示三维                                          
            this.chart.View3D = true;
 
            DataSeries dataSeries = new DataSeries();
            //Chart的实例这是以饼图显示       Bubble    
             
            DataPoint datapoint = null;
 
            for (int i = 0; i < dtChart.Rows.Count; i++)
            {
                datapoint = new DataPoint();
                datapoint.AxisXLabel = dtChart.Rows[i]["hospitalName"].ToString();
                datapoint.YValue = Convert.ToDouble(dtChart.Rows[i]["hospitalId"].ToString());
                datapoint.Tag = dtChart.Rows[i]["hospitalId"].ToString();
                //DataPoint被点击执行事件
                datapoint.MouseLeftButtonDown += new MouseButtonEventHandler(datapoint_MouseLeftButtonDown);
                dataSeries.DataPoints.Add(datapoint);
            }
            //绑定当鼠标放上去显示的信息    
            dataSeries.LabelAngle = -30;
            this.chart.Series.Add(dataSeries);
 
            Title title = new Title();
            title.Text = "某某医院...";
            this.chart.Titles.Add(title);
 
            this.chart.ShadowEnabled = true;
        }
 
        #endregion

        public VisifireWindow()        {            InitializeComponent();             BindData();        }

绑定后的效果，如图：

这是绑定一列的！

第三步：

如图，有三个按钮，‘showChartData’，‘ExportToPng’

1.showChartData，主要是多列数据绑定，实现效果如图：

上代码：

#region 可以显示多列，绑定界面Chart                private void BindMoreColumnChart(DataTable dtChart)        {            this.chart.Series.Clear();            this.chart.AnimationEnabled = true;            this.chart.View3D = true;            DataSeries dataSeries = new DataSeries();            dataSeries.RenderAs = RenderAs.Bar;            dataSeries.LabelEnabled = true;            dataSeries.LegendText = "最小值";//图例显示的信息            dataSeries.LabelText = "#AxisXLabel, #YValue";            DataPoint datapoint;            for (int i = 0; i < dtChart.Rows.Count; i++)            {                datapoint = new DataPoint();                datapoint.AxisXLabel = dtChart.Rows[i]["job_id"].ToString();                datapoint.YValue = Convert.ToDouble(dtChart.Rows[i]["min_lvl"].ToString());                dataSeries.DataPoints.Add(datapoint);            }            this.chart.Series.Add(dataSeries);            DataSeries dataSeries1 = new DataSeries();            dataSeries1.RenderAs = RenderAs.Bar;            dataSeries1.LabelEnabled = true;            DataPoint datapoint1;            for (int i = 0; i < dtChart.Rows.Count; i++)            {                datapoint1 = new DataPoint();                datapoint1.AxisXLabel = dtChart.Rows[i]["job_id"].ToString();                datapoint1.YValue = Convert.ToDouble(dtChart.Rows[i]["max_lvl"].ToString());                dataSeries1.DataPoints.Add(datapoint1);            }            dataSeries1.LegendText = "最大值";            dataSeries1.LabelText = "#AxisXLabel, #YValue";            this.chart.Series.Add(dataSeries1);            this.chart.ShadowEnabled = true;        }        #endregion

2.ExportTopng，是将visifire当前实现的图表导成png，上代码:

 #region ExportToPng        /// <summary>        /// ExportToPng        /// </summary>        /// <param name="path"></param>        /// <param name="surface"></param>        public void ExportToPng(Uri path,Visifire.Charts.Chart surface)        {            if (path == null) return;            //Save current canvas transform 保存当前画布变换            Transform transform = surface.LayoutTransform;            //reset current transform (in case it is scaled or rotated) 重设当前画布（如果缩放或旋转）            surface.LayoutTransform = null;            //Create a render bitmap and push the surface to it 创建一个渲染位图和表面            RenderTargetBitmap renderBitmap = new RenderTargetBitmap(                (int)surface.Width,                (int)surface.Height,                96d, 96d,                PixelFormats.Pbgra32);            renderBitmap.Render(surface);            // Create a file stream for saving image            using (FileStream outStream = new FileStream(path.LocalPath,FileMode.Create))            {                //Use png encoder for our data                PngBitmapEncoder encoder = new PngBitmapEncoder();                // push the rendered bitmap to it                encoder.Frames.Add(BitmapFrame.Create(renderBitmap));                // save the data to the stream                encoder.Save(outStream);            }            // Restore previously saved layout 恢复以前保存布局            surface.LayoutTransform = transform;        }        #endregion#region 将Visifire图表保存为图片  http://www.visifire.com/blog/page/15/        private void btn_ExportToPng_Click(object sender, RoutedEventArgs e)        {            ExportToPng(new Uri("D:/Visifire.png"), this.chart);        }#endregion

【这只是基础，大家可以了解下，想起昨天看大本营了，快乐未完待续，我想说，学习未完待续！大家可以看看visifire官方网站的文档进行学习，http//www.visifire.com/】