C# WPF 通过 ZedGraph 绘制柱状图

最新推荐文章于 2025-07-08 14:28:35 发布

前路漫漫其修远兮

最新推荐文章于 2025-07-08 14:28:35 发布

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本文链接：https://blog.youkuaiyun.com/weixin_42974146/article/details/94396140

本文详细介绍如何使用ZedGraph在WPF应用中创建柱状图，并为每个柱子添加文本标签，包括设置图表标题、轴标题、添加数据点、设置颜色等步骤。

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首先参考我以前的博客介绍如何使用ZedGraph点击，查看
参考：https://blog.youkuaiyun.com/lan_liang/article/details/7528837

 private void Window_Loaded(object sender, RoutedEventArgs e)
{
            zedGraphControl1.GraphPane.CurveList.Clear();
            zedGraphControl1.GraphPane.GraphObjList.Clear();        
            GraphPane myPane = zedGraphControl1.GraphPane;
            myPane.Title.Text = "统计消费者";  //设计图表的标题
            myPane.XAxis.Title.Text = "男/女"; //X轴标题
            myPane.YAxis.Title.Text = "人数"; //Y轴标题          
            PointPairList PPLa = new PointPairList();
            PointPairList PPLb = new PointPairList();   
            for (int i = 1; i < 2; i++)
            {
                PPLa.Add(i, i + 3);
                PPLb.Add(i + 1, i + 4);       
            }         
            BarItem myBara = myPane.AddBar("A", PPLa, System.Drawing.Color.Red);
            BarItem myBarb = myPane.AddBar("B", PPLb, System.Drawing.Color.Blue);        
            zedGraphControl1.AxisChange();
            zedGraphControl1.Refresh();//这句话非常重要，否则不会立即显示
}

下面这部分是在柱状图上添加标签。假如我有3个柱子，参考https://www.cnblogs.com/know/archive/2011/04/07/2008096.html

for (int i=0;i<3;i++)
            {
                BarItem myBara = myPane.AddBar(tongdaoshengsu[i], new double[] { start_x }, new double[] { shengdaoydata[i] }, colorarr[i]);//加柱子
                myPane.BarSettings.ClusterScaleWidth = 4;//设置柱体的宽度
                myPane.BarSettings.Type = ZedGraph.BarType.Cluster;
                TextObj textobj1 = new TextObj(strshengdao[i], start_x + start_x2, (double)shengdaoydata[i]+0.1 , CoordType.AxisXY2Scale, AlignH.Left, AlignV.Bottom);这里是设置标签
                textobj1.FontSpec.Border.IsVisible = false;
                textobj1.FontSpec.Fill.IsVisible = false;
                textobj1.FontSpec.Fill.Color = System.Drawing.Color.White;
                textobj1.FontSpec.Size = 16;//控制标签显示大小
                                           // 选择标注字体90°
                textobj1.FontSpec.Angle = 0;//横向显示
                myPane.GraphObjList.Add(textobj1);//加上这就会显示标签
                start_x++;
                start_x2++;//不写这句标签会和柱子对不齐
            }