c# owc11 双Y轴

//双Y轴
//且第二条曲线和第三条曲线 公用右侧Y轴
InsertChart.SeriesCollection[1].Ungroup(true);
InsertChart.SeriesCollection[1].Group(InsertChart.SeriesCollection[2]);

//右侧Y轴
Microsoft.Office.Interop.Owc11.ChAxis seAxes = InsertChart.Axes.Add(InsertChart.SeriesCollection[1].get_Scalings(ChartDimensionsEnum.chDimValues));
seAxes.Position = Microsoft.Office.Interop.Owc11.ChartAxisPositionEnum.chAxisPositionRight;
seAxes.HasMajorGridlines = false;
seAxes.MajorUnit = 1;
seAxes.Scaling.Minimum = 0;
InsertChart.Axes[2].HasTitle = true;
InsertChart.Axes[2].Title.Caption = "右侧Y轴 单位多少";

基础的owc11报表的创建 可参考
http://www.cnblogs.com/freeliver54/archive/2008/12/22/1359555.html