dev控件显示柱状图的简单例子

1、一、绑定实体到图表Step1Step2数据源显示数据二、后台查询数据绑定到bingdingsourepublic void Init() /通过查询数据库 取得值 DataTable dt = updateEmp.queryEMp(); this.bindingSource1.DataSource = dt; chartControl2.Series.Clear(); Series Series1 = new Series("工资", ViewType.Bar); Series1.ArgumentScaleType = ScaleType.Qualitative; Seri

2、es1.ArgumentDataMember = "姓名" Series1.ValueScaleType = ScaleType.Numerical; Series1.ValueDataMembersSerializable = "工资" = Color.Red; (Series1); Series1.LabelsVisibility = DevExpress.Utils.DefaultBoolean.True; Step1Step2Step3三、无数据绑定的图表后台查询数据显示public void Init() (); Series series1

3、= new Series("工资", ViewType.Bar); Series series2 = new Series("奖金", ViewType.Bar); (series1); (series2); /获取曲线图所要显示的数据 UpdateIronInfo updateIronInfo = new UpdateIronInfo(); DataTable dt = updateEmp.queryEMp(); SeriesPoint point = null; foreach (DataRow row in dt.Rows) if (row&quo

4、t;姓名".ToString() != null) point = new SeriesPoint(row"姓名".ToString(); double vals = Convert.ToDouble(row"工资".ToString() ; point.Values = vals; (point); if (row"奖金".ToString()!=null) point = new SeriesPoint(row"姓名".ToString(); double vals = Convert.ToDouble(row"奖金".ToString() ; point.Values = vals; series2.Points.Add(point); BarSeriesView sv1 = (BarSeriesView)series1.View; BarSeriesView sv2 = (BarSeriesView)series2.View; sv1.BarWidth