Question

我正在尝试显示与我的数据库连接的图表。但它会产生错误。错误是＆＃34;数据点插入错误。此数据系列只能设置1个Y值。＆＃34;请帮我。代码如下：

public partial class chart3 : System.Web.UI.Page
{
    SqlConnection con;
    SqlCommand cmd;
    SqlDataAdapter da;
    DataTable dt;
    protected void Page_Load(object sender, EventArgs e)
    {
        con = new SqlConnection(@"connectionString");
        cmd = new SqlCommand("Select * from GraphChart",con);
        da = new SqlDataAdapter(cmd);
        dt = new DataTable();
        da.Fill(dt);
        Chart1.DataSource = dt;
        Chart1.DataBind();
    }
}

来源：

<div>
 <asp:Chart ID="Chart1" runat="server"  CssClass="auto-style1" Width="423px">
            <Series>
                <asp:Series Name="Series1" XValueMember="Name"></asp:Series>
                <asp:Series Name="Series2" YValueMembers="Age"></asp:Series>

            </Series>
            <ChartAreas>
                <asp:ChartArea Name="ChartArea1"></asp:ChartArea>
            </ChartAreas>
            <Legends>
                <asp:Legend Title="Employee Data"></asp:Legend>
            </Legends> 
        </asp:Chart>
</div>

Answer 1

以下给出的代码正常运行。谢谢大家。

public partial class chart3 : System.Web.UI.Page
{
    SqlConnection con;
    SqlCommand cmd;
    SqlDataAdapter da;
    DataSet ds;
    protected void Page_Load(object sender, EventArgs e)
    {
        con = new SqlConnection(@"connectionString");
        cmd = new SqlCommand("Select * from GraphChart",con);
        da = new SqlDataAdapter(cmd);
        ds = new DataSet();
        da.Fill(ds);
        DataView source = new DataView(ds.Tables[0]);
        Chart1.DataSource = source; 
        Chart1.Series[0].XValueMember = "Name";
        Chart1.Series[0].YValueMembers = "Age";
        Chart1.DataBind();
    }
}

Answer 2

您可能正在设置标签而不是真实数据。

也许此链接可以提供帮助：ASP.NET MVC 3 MSChart Error: Only 1 Y values can be set for this data series

数据点插入错误。此数据系列只能设置1个Y值

2 个答案: