如何使用ms图表控件将y轴值增加15分钟

Question

我正在使用MS图表控件的叠列图表类型，我希望y轴标签在下午4点到9点之间以15分钟的间隔增加。我附上了图表的样子，并附上了生成图片的示例代码。

<asp:Chart ID="Chart1" runat="server" Height="296px" Width="412px" BackColor="#D3DFF0" 
    Palette="BrightPastel" BorderDashStyle="Solid" BackGradientStyle="TopBottom" 
    BorderWidth="2" BorderColor="26, 59, 105"> 
    <Legends> 
     <asp:Legend TitleFont="Microsoft Sans Serif, 8pt, style=Bold" BackColor="Transparent" 
      Font="Trebuchet MS, 8.25pt, style=Bold" IsTextAutoFit="False" Enabled="False" 
      Name="Default"> 
     </asp:Legend> 
    </Legends> 
    <BorderSkin SkinStyle="Emboss"></BorderSkin> 
    <Series> 
     <asp:Series Name="Series1" ChartType="StackedColumn" BorderColor="180, 26, 59, 105" 
      Color="220, 65, 140, 240" YValueType="Time" IsValueShownAsLabel="True" 
      LabelFormat="{0:HH:mm:ss}"> 
     </asp:Series> 
     <asp:Series Name="Series2" ChartType="StackedColumn" BorderColor="180, 26, 59, 105" 
      Color="220, 252, 180, 65" YValueType="Time" IsValueShownAsLabel="True" 
      LabelFormat="{0:HH:mm:ss}"> 
     </asp:Series> 
     <asp:Series Name="Series3" ChartType="StackedColumn" BorderColor="180, 26, 59, 105" 
      Color="220, 224, 64, 10" YValueType="Time" IsValueShownAsLabel="True" 
      LabelFormat="{0:HH:mm:ss}"> 
     </asp:Series> 
     <asp:Series Name="Series4" ChartType="StackedColumn" BorderColor="180, 26, 59, 105" 
      Color="220, 5, 100, 146" YValueType="Time" IsValueShownAsLabel="True" 
      LabelFormat="{0:HH:mm:ss}"> 
     </asp:Series> 
    </Series> 
    <ChartAreas> 
     <asp:ChartArea Name="ChartArea1" BorderColor="64, 64, 64, 64" BorderDashStyle="Solid" 
      BackSecondaryColor="Transparent" BackColor="64, 165, 191, 228" ShadowColor="Transparent" 
      BackGradientStyle="TopBottom"> 
      <Area3DStyle Rotation="10" Inclination="15" WallWidth="0" /> 
      <Position Y="3" Height="92" Width="92" X="2"></Position> 
      <AxisY LineColor="64, 64, 64, 64" LabelAutoFitMaxFontSize="8"> 
       <LabelStyle Font="Trebuchet MS, 8.25pt, style=Bold" /> 
       <MajorGrid LineColor="64, 64, 64, 64" /> 
      </AxisY> 
      <AxisX LineColor="64, 64, 64, 64" LabelAutoFitMaxFontSize="8"> 
       <LabelStyle Font="Trebuchet MS, 8.25pt, style=Bold" /> 
       <MajorGrid LineColor="64, 64, 64, 64" /> 
      </AxisX> 
     </asp:ChartArea> 
    </ChartAreas> 
</asp:Chart> 

而且在后面的代码我绑定了一些测试数据：

private void BindChart() 
    { 
     Random random = new Random(); 

     //each series is a class? 

     //section count to be determined dynamically 
     //is the number of 'pool sections' (a pool can hold mulitiple classes) 

     int intSectionCount = 4; 

     for (int pointIndex = 0; pointIndex < intSectionCount; pointIndex++) 
     { 
      //Series are the number of classes per section and the points are the start times of the class? 
      //these numbers stack on top of each other. 
      //What if vacant time slots or grace periods alloted to time before classes start 

      //determine real datetime based on excel spreadsheet data 


      int sec = 0; 
      int min = ((int)random.Next(1, 2) == 1) ? 0 : 30; 
      int hour = (int)random.Next(16, 18); 
      int day = DateTime.Now.Day; 
      int month = DateTime.Now.Month; 
      int year = DateTime.Now.Year; 

      System.DateTime y = new DateTime(year, month, day, hour, min, sec); 


      Chart1.Series["Series1"].Points.AddY(y.ToOADate()); 

      //increment 
      y = y.AddMinutes(30); 

      Chart1.Series["Series2"].Points.AddY(y.ToOADate()); 


      //increment 
      y = y.AddMinutes(30); 
      Chart1.Series["Series3"].Points.AddY(y.ToOADate()); 


      //increment 
      y = y.AddMinutes(30); 
      Chart1.Series["Series4"].Points.AddY(y.ToOADate()); 


      //Chart1.Series["Series1"].Points.AddY(Math.Round((double)random.Next(45, 95),0)); 
      //Chart1.Series["Series2"].Points.AddY(Math.Round((double)random.Next(5, 75),0)); 
      //Chart1.Series["Series3"].Points.AddY(Math.Round((double)random.Next(5, 95),0)); 
      //Chart1.Series["Series4"].Points.AddY(Math.Round((double)random.Next(35, 95),0)); 
     }   
    } 

Chart1.ChartAreas[0].AxisY.Minimum = (new DateTime(2010, 10, 31, 16, 00, 00)).ToOADate(); 
     Chart1.ChartAreas[0].AxisY.Maximum = (new DateTime(2010, 10, 31, 21, 00, 00)).ToOADate(); 
     Chart1.ChartAreas[0].AxisY.IsReversed = true; 

Answer 1

想通了：

Chart1.ChartAreas[0].AxisY.Minimum = (new DateTime(2010, 10, 31, 16, 00, 00)).ToOADate(); 
Chart1.ChartAreas[0].AxisY.Maximum = (new DateTime(2010, 10, 31, 21, 00, 00)).ToOADate(); 
Chart1.ChartAreas[0].AxisY.IsReversed = true; 
Chart1.ChartAreas[0].AxisY.IntervalType = System.Web.UI.DataVisualization.Charting.DateTimeIntervalType.Minutes; 
Chart1.ChartAreas[0].AxisY.Interval = 15;