https://www.cnblogs.com/wyuan/archive/2012/07/22/WPF.html

引言：

　　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;
http://pic002.cnblogs.com/images/2012/368829/2012072216004293.png

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]);        }

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

http://pic002.cnblogs.com/images/2012/368829/2012072216483217.png

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：
http://pic002.cnblogs.com/images/2012/368829/2012072216592860.png

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，visifire官方网站的文档进行学习，http//www.visifire.com/】