在asp.net中的圖表控件中繪制條形圖和折線圖

Question

<asp:Chart ID="chartSellThru" runat="server" Height="400px" Width="1200px" >
    <Series>                       
        <asp:Series Name="ActualsQTD">
        </asp:Series>
        <asp:Series Name="ForecastQTD">
        </asp:Series>
        <asp:Series Name="QTDRatio" ChartType="Line">
        </asp:Series>
        <asp:Series Name="TargetAttain" ChartType="Line">
        </asp:Series>
    </Series>
    <ChartAreas>
        <asp:ChartArea Name="SellThruChartArea">
        </asp:ChartArea>
    </ChartAreas>

chartSellThru.Series["ActualsQTD"].XValueMember = "ProductGroup";
chartSellThru.Series["ActualsQTD"].YValueMembers = "ActualsQTD";

我在default.aspx頁面上寫了上面的代碼行，最后兩行代碼寫在default.aspx.cs頁面中。 數據綁定到圖表。

如何編寫折線圖的代碼。 確保從database.how綁定值以將值從sql server綁定到折線圖。

Answer 1

我認為你需要兩個系列應該綁定到圖表，如果是這樣我放置下面的代碼

在aspx頁面中

  <asp:Chart ID="ChartDemo" runat="server" Height="400px" Width="1200px">
                <Series>
                    <asp:Series Name="ActualsQTD">
                    </asp:Series>
                    <asp:Series Name="ForecastQTD">
                    </asp:Series>
                    <asp:Series Name="QTDAttainMent">
                    </asp:Series>
                    <asp:Series Name="QTDRatio">
                    </asp:Series>
                </Series>
                <ChartAreas>
                    <asp:ChartArea Name="SellThruChartArea">
                    </asp:ChartArea>
                </ChartAreas>
            </asp:Chart>

並在aspx.cs頁面中

      DataSet ds = new DataSet();
        ds = SrcObj.GetSellThruChartData(ddlFiscalMonth.SelectedValue.ToString(), ddlReportWeek.SelectedValue.ToString(), ddlArea.SelectedValue.ToString());
        //Column Chart
        ChartDemo.Series["ActualsQTD"].ChartType = SeriesChartType.Column;
        ChartDemo.Series["ActualsQTD"]["PointWidth"] = "0.9";            
        ChartDemo.Series["ActualsQTD"]["BarLabelStyle"] = "Center";
        ChartDemo.Series["ActualsQTD"]["PixelPointDepth"] = "99";
        ChartDemo.Series["ActualsQTD"]["DrawingStyle"] = "Cylinder";
        ChartDemo.Series["ForecastQTD"].ChartType = SeriesChartType.Column;
        ChartDemo.Series["ForecastQTD"]["PointWidth"] = "0.9";            
        ChartDemo.Series["ForecastQTD"]["BarLabelStyle"] = "Center";
        ChartDemo.Series["ForecastQTD"]["PixelPointDepth"] = "99";
        ChartDemo.Series["ForecastQTD"]["DrawingStyle"] = "Cylinder";
        ChartDemo.ChartAreas["SellThruChartArea"].AxisX.Interval = 1;            
        ChartDemo.ChartAreas["SellThruChartArea"].AxisX.MajorGrid.Enabled = false;
        //ChartDemo.ChartAreas["SellThruChartArea"].AxisY.MajorGrid.Enabled = false;

        ChartDemo.Series["ActualsQTD"].XValueMember = "ProductGroup";
        ChartDemo.Series["ActualsQTD"].YValueMembers = "ActualsQTD";            
        ChartDemo.Series["ForecastQTD"].XValueMember = "";
        ChartDemo.Series["ForecastQTD"].YValueMembers = "ForecastQTD";
        ChartDemo.Series["ActualsQTD"].IsValueShownAsLabel = true;            
        ChartDemo.Series["ForecastQTD"].IsValueShownAsLabel = true;

        //Line Chart
        ChartDemo.Series["QTDAttainMent"].ChartType = SeriesChartType.Line;
        ChartDemo.Series["QTDRatio"].ChartType = SeriesChartType.Line;           

        ChartDemo.Series["QTDAttainMent"].XValueMember = "";
        ChartDemo.Series["QTDAttainMent"].YValueMembers = "QTDAttainMent";
        ChartDemo.Series["QTDRatio"].XValueMember = "";
        ChartDemo.Series["QTDRatio"].YValueMembers = "QTDRatio";

        ChartDemo.Series["QTDAttainMent"].IsValueShownAsLabel = true;
        ChartDemo.Series["QTDRatio"].IsValueShownAsLabel = true;

        ChartDemo.Series["QTDAttainMent"].BorderWidth = 3;
        ChartDemo.Series["QTDAttainMent"].Color = Color.Green;
        ChartDemo.Series["QTDRatio"].BorderWidth = 3;
        ChartDemo.Series["QTDRatio"].Color = Color.Red;

        ChartDemo.Series["QTDAttainMent"].YAxisType = AxisType.Secondary;
        ChartDemo.Series["QTDRatio"].YAxisType= AxisType.Secondary;           

        ChartDemo.DataSource = ds;
        ChartDemo.DataBind();

Answer 2

代碼非常簡單：

using (SqlConnection conn = new SqlConnection("OMG look a connection string"))
{
    using (SqlCommand cmd = new SqlCommand("SELECT xValue, yValue FROM chartPoints"))
    {
        try
        {
            conn.Open()

            using (SqlDataReader rdr = cmd.ExecuteReader())
            {
                chartSellThru.Series["QTDRatio"].Points.DataBindXY(rdr, "xValue", rdr, "yValue");
            }
        }
        catch(Exception ex)
        {
            //handle errors
        }
    }
}

您還可以將此命令設置為SqlDataSource的SelectCommand並將其綁定到圖表，然后使用與XValueMember相同的方式選擇具有XValueMember和YValueMembers的點：

<asp:SqlDataSource runat="server" ID="dsLinePoints" ConnectionString="OMG look a connection string" SelectCommand="SELECT xValue, yValue FROM chartPoints" />

<asp:Chart ID="chartSellThru" runat="server" Height="400px" Width="1200px" DataSourceID="dsLinePoints">
    <Series>                       
        <asp:Series Name="ActualsQTD">
        </asp:Series>
        <asp:Series Name="ForecastQTD">
         </asp:Series>
        <asp:Series Name="QTDRatio" ChartType="Line">
        </asp:Series>
        <asp:Series Name="TargetAttain" ChartType="Line">
        </asp:Series>
    </Series>
    <ChartAreas>
        <asp:ChartArea Name="SellThruChartArea">
        </asp:ChartArea>
    </ChartAreas>
</asp:Chart>

chartSellThru.Series["QTDRatio"].XValueMember = "xValue";
chartSellThru.Series["QTDRatio"].YValueMembers = "yValue";

Answer 3

你可以先做簡單然后去多個系列。

代碼背后的頁面：

Values[]={10,20,30,40,50}

weekworkline1.Series.Add(new AjaxControlToolkit.LineChartSeries { Data = values, LineColor = "#2fd1f9", Name = "Working Hours" });

Aspx代碼：

<asp:LineChart ID="weekworkline1" runat="server" ChartHeight="300" ChartWidth="900" ChartType="Stacked"></asp:LineChart>