c# - ASP.Net C# - 在图表中设置和显示 x 轴值

Question

我有一个绘制折线图的函数，如下所示。数据点是从 MySQL 表中获取的。但是，如何将 x 轴上的每个数据点编号为 1,2,3,4...？

在下面的示例中，查询返回两个结果，并且图形显示两个点，因此图形的轴上应标记有 1 和 2。

编辑:初始问题已解决。但是，对于上面的示例，有 2 个数据点，但最大 x 值为 3。有没有办法将最大 x 值设置为等于数据点的数量？

protected void chart(int moduleID)
{
    string connStr = ConfigurationManager.ConnectionStrings["myConnectionString"].ConnectionString;
    MySqlConnection conn = new MySqlConnection(connStr);

    string comm = "SELECT * FROM scores WHERE test_id=0 AND module_id=@ModuleID AND user_id=@UserID";
    MySqlCommand mySqlCommand = new MySqlCommand(comm, conn);
    mySqlCommand.Parameters.Add(new MySqlParameter("@ModuleID", moduleID));
    mySqlCommand.Parameters.Add(new MySqlParameter("@UserID", Session["UserID"]));

    MySqlDataAdapter dataAdapter = new MySqlDataAdapter(mySqlCommand);
    DataTable ds = new DataTable();

    Chart1.ChartAreas["ChartArea1"].AxisX.MajorGrid.Enabled = false;
    Chart1.ChartAreas["ChartArea1"].AxisY.MajorGrid.Enabled = false;
    Chart1.ChartAreas["ChartArea1"].AxisX.Minimum = 1;
    Chart1.ChartAreas["ChartArea1"].AxisX.LabelStyle.Enabled = false;
    Chart1.ChartAreas["ChartArea1"].AxisX.Title = "attempt no.";
    Chart1.ChartAreas["ChartArea1"].AxisY.Minimum = 0;
    Chart1.ChartAreas["ChartArea1"].AxisY.Maximum = 100;
    Chart1.ChartAreas["ChartArea1"].AxisY.Title = "%";
    Chart1.ChartAreas["ChartArea1"].AxisY.TextOrientation = TextOrientation.Horizontal;

    try
    {
        conn.Open();
        dataAdapter.Fill(ds);

        if (ds.Rows.Count > 0)
        {
            Chart1.DataSource = ds;
            Chart1.Series["Series1"].YValueMembers = "score";
            Chart1.DataBind();
        }
        else
        {
            Chart1.Visible = false;
            lblError2.Text = "No results found.";
        }
    }
    catch
    {
        lblError.Text = "Database connection error. Unable to obtain data at the moment.";
    }
    finally
    {
        conn.Close();
    }
}

Answer 1

有问题:

Chart1.ChartAreas["ChartArea1"].AxisX.LabelStyle.Enabled = false;

您已禁用轴标签

http://msdn.microsoft.com/en-us/library/system.windows.forms.datavisualization.charting.labelstyle.enabled%28v=vs.110%29.aspx