如何设置Mschart坐标轴

KING_314 2010-11-25 03:03:26

现在MSchart图形绘制代码如下：



  DeviceViewChart.DataSource = dt1;

                //图片标题

                DeviceViewChart.Titles.Clear();

                //DeviceViewChart.Titles.Add(DeviceName);

                //DeviceViewChart.Titles.Clear();

                DeviceViewChart.Series.Clear();

                DeviceViewChart.Series.Add("Series1");

                DeviceViewChart.Series["Series1"].ChartType = SeriesChartType.StackedColumn;

                DeviceViewChart.Series.Add("Series2");

                DeviceViewChart.Series["Series2"].ChartType = SeriesChartType.StackedColumn;

                //X.Y轴数据显示间隔

                DeviceViewChart.ChartAreas["ChartArea1"].AxisX.Interval = 2;  //X轴数据显示间隔

                DeviceViewChart.ChartAreas["ChartArea1"].AxisX.Maximum = 12;

                DeviceViewChart.ChartAreas["ChartArea1"].AxisX.Minimum = 0;

                DeviceViewChart.ChartAreas["ChartArea1"].AxisY.Interval = 20;

                DeviceViewChart.ChartAreas["ChartArea1"].AxisY.Maximum = 100;

                //Y轴

                DeviceViewChart.Series["Series1"].YValueMembers = "DMPow";

                DeviceViewChart.Series["Series1"].XValueMember = "DTime";

                DeviceViewChart.BackColor = Color.OldLace;

                //显示柱形图该时段的数据

                DeviceViewChart.Series["Series1"].ToolTip = "(#VALX{G},#VALY{F2})";

                DeviceViewChart.Series["Series2"].YValueMembers = "NMPow";

                DeviceViewChart.Series["Series2"].XValueMember = "DTime";

                //DeviceViewChart.BackColor = Color.OldLace;

                //显示柱形图该时段的数据

                DeviceViewChart.Series["Series2"].ToolTip = "(#VALX{G},#VALY{F2})";



                DeviceViewChart.DataBind();

当Dt1为空时，无法正常显示坐标轴。请问如何在dt1查询结果为空时，Mschart绘制的坐标轴依然存在。

注：因为有多个不同坐标轴的图形需要绘制，因此在绘制时需要对坐标轴进行如下设定

//X.Y轴数据显示间隔

                DeviceViewChart.ChartAreas["ChartArea1"].AxisX.Interval = 2;  //X轴数据显示间隔

                DeviceViewChart.ChartAreas["ChartArea1"].AxisX.Maximum = 12;

                DeviceViewChart.ChartAreas["ChartArea1"].AxisX.Minimum = 0;

                DeviceViewChart.ChartAreas["ChartArea1"].AxisY.Interval = 20;

                DeviceViewChart.ChartAreas["ChartArea1"].AxisY.Maximum = 100;

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