ASP.NET 饼图仅显示 YValueMembers

Question

我正在尝试创建一个图表来显示选中和未选中答案的百分比 booklets.But 饼图仅显示未选中的值，即 YValueMember。如何解决？

 protected void DropDown_Subjects_SelectedIndexChanged(object sender, EventArgs e)
{
    Chart4.Visible = true;
    SqlConnection connection = new SqlConnection(ConfigurationManager.ConnectionStrings["Con"].ConnectionString);
    SqlCommand cmd = new SqlCommand("select checked_percent, unchecked_percent From(select COUNT(*) * 100.0 / (select count(*)from[newexam2017].[dbo].[newexam2017] where sub_code = '" + DropDown_Subjects.SelectedValue + "') as checked_percent from[newexam2017].[dbo].[newexam2017]  where CheckBy is not null and sub_code = '" + DropDown_Subjects.SelectedValue + "' )checked,(select COUNT(*) * 100.0 / (select count(*)from[newexam2017].[dbo].[newexam2017] where sub_code = '" + DropDown_Subjects.SelectedValue + "')as unchecked_percent from[newexam2017].[dbo].[newexam2017]  where CheckBy is  null and sub_code = '" + DropDown_Subjects.SelectedValue + "')unchecked", connection);
    connection.Open();


    SqlDataAdapter da = new SqlDataAdapter(cmd);
    DataSet ds = new DataSet();
    da.Fill(ds);

    DataTable ChartData = ds.Tables[0];
    Chart4.DataSource = ChartData;

    Chart4.Series[0].Points.DataBind(ChartData.DefaultView, "checked_percent", "unchecked_percent", "");

    for (int i = 0; i < Chart4.Series[0].Points.Count; i++)
    Chart4.Series[0].Points[i].Label = string.Format("{0:0.00}%", ChartData.Rows[i]["checked_percent"], "{0:0.00}%", ChartData.Rows[i]["unchecked_percent"]);


    connection.Close();
   }

asp代码：

        <asp:Chart ID="Chart4" runat="server"  BackColor="DarkSlateBlue" BackGradientStyle="LeftRight"  
        BorderlineWidth="0" Height="440px" Palette="SeaGreen" PaletteCustomColors="24, 0, 0"  
        Width="560px" BorderlineColor="128, 128, 255" OnLoad="Chart4_Load">

             <Titles>
            <asp:Title Name="DefaultTitle" Font="Trebuchet MS, 15pt, style=Bold"
                  Text = "Overall Scoring Progress" />
      </Titles>
    <%--  <Legends>
            <asp:Legend Name="DefaultLegend" Enabled="True" Docking="Top" />
      </Legends>--%>

            <Series>
                <asp:Series Name="Series1"  IsValueShownAsLabel="true"  YValuesPerPoint="10"  ChartType="Pie"></asp:Series>
            </Series>
            <ChartAreas>
                <asp:ChartArea Name="ChartArea4" >

</asp:ChartArea>
            </ChartAreas>
        </asp:Chart>

我想要的：

我得到的：

Answer 1

在饼图中，checked_percent 和 unchecked_percent 都必须是 Y 值。像这样：

 protected void Chart4_Load(object sender, EventArgs e)
 {
    Chart4.Series[0].Points.Add(new DataPoint(0, (double)ChartData.Rows[0]["unchecked_percent"]));
    Chart4.Series[0].Points.Add(new DataPoint(1, (double)ChartData.Rows[0]["checked_percent"]));
 }

编辑： 包括自定义标签：

protected void Chart4_Load(object sender, EventArgs e)
{
    DataPoint dp = new DataPoint(0, (double)ChartData.Rows[0]["unchecked_percent"]);
    dp.Label = string.Format("unchecked\n{0:0.00}%", ChartData.Rows[0]["unchecked_percent"]);
    Chart4.Series[0].Points.Add(dp);

    dp = new DataPoint(1, (double)ChartData.Rows[0]["checked_percent"]);
    dp.Label = string.Format("checked\n{0:0.00}%", ChartData.Rows[0]["checked_percent"]);
    Chart4.Series[0].Points.Add(dp);
}

ASP.NET 饼图仅显示 YValueMembers

ASP.NET Pie chart only displaying YValueMembers

.net

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asp.net

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