.NET条形图不能正确绘图

Question

当我绘制条形图时，某些项目在X轴上没有正确绘图，而等价的Y轴很好。

我的用户控制具有以下代码，

<asp:Chart ID="Chart1" runat="server" Width="850px" Height="600px"> 
    <Series> 
     <asp:series Name="Series1"></asp:series> 
    </Series> 
    <ChartAreas> 
     <asp:ChartArea Name="ChartArea1"> 
     </asp:ChartArea> 
    </ChartAreas> 
</asp:Chart> 

代码来填充数据表，

protected DataTable GetGroupExperienceData(PickerEntity pickerEntity) 
{ 
    DataTable table; 
    table = new DataTable(); 

    table.Columns.Add("Participant", typeof(string)); 
    table.Columns.Add("Experience", typeof(Int32)); 
    table.Columns.Add("Question", typeof(string)); 

    DataRow row;      

    if (collListItems2.Count > 0 && collListItems2 != null) 
    { 
     for (int i = 0; i < collListItems2.Count; i++) 
     { 
      row = table.NewRow(); 

      row["Participant"] = user.Name; 

      SPFieldLookupValue lpkFieldQName = new SPFieldLookupValue(itemRep["SurveyQuestion"].ToString()); 
      string lkpQNameVal = lpkFieldQName.LookupValue; 

      row["Question"] = lkpQNameVal; 

      SPDiagnosticsService.Local.WriteTrace(0, new SPDiagnosticsCategory("(Error)", TraceSeverity.Unexpected, EventSeverity.Error), TraceSeverity.Unexpected, ">" + row["Question"].ToString(), ""); 

      if (itemRep["Experience"] !=null) 
      { 
       row["Experience"] = itemRep["Experience"]; 
      } 
      else 
      { 
       row["Experience"] = Convert.ToInt32("0"); 
      } 

      table.Rows.Add(row); 
     } 
    } 

    return dt; 
} 

最后图表绘制代码，

protected void DrawExperienceChart(DataTable dt) 
{ 
    Chart1.Series["Series1"].ChartType = SeriesChartType.Bar; 
    Chart1.Series["Series1"]["DrawingStyle"] = "Emboss"; 
    Chart1.ChartAreas["ChartArea1"].Area3DStyle.Enable3D = false; 
    Chart1.Series["Series1"].IsValueShownAsLabel = true; 
    Chart1.DataSource = dt; 
    Chart1.Series["Series1"].XValueMember = "Question"; 
    Chart1.Series["Series1"].YValueMembers = "Experience"; 
    Chart1.DataBind(); 
} 

所有这些功能是由按钮调点击，

protected void btnGetReport_Click(object sender, EventArgs e) 
{ 
    DataTable dt = GetGroupExperienceData(pickerEntity); 

    DrawExperienceChart(dt); 
} 

这里是输出结果，在X轴上有很多“问题”数据缺失，但是相同的“体验”在Y轴上很好地绘制。

我想可能是数据不进入数据表，但数据表有哪些我可以看到使用SPDiagnosticsService.Local.WriteTrace()数据，

Answer 1

这是很容易，有一个设置必须使其能够查看所有标签，否则图表控件将隐藏大部分标签。

Chart1.ChartAreas["ChartArea1"].AxisX.Interval = 1;