将datareader绑定到asp图表控件

本质上，我有一个数据读取器，理论上它会调用存储过程，并绑定返回到图表的查询。

这是我想要绑定到图表的数据：

ForecastDesc    Previous    Current Budget  Forecast 4  Forecast 7 
Period1 966025.79   1466872.95  1000000.00  0.00    0.00
Period2 1051175.09  1489785.15  1000000.00  0.00    0.00
Period3 1205352.26  1552806.49  1000000.00  0.00    0.00
Period4 1261483.84  1544562.06  1000000.00  50.00   0.00
Period5 1298918.58  1681396.55  1000000.00  45.00   0.00
Period6 1314396.68  1611695.58  10000000.00 50.50   0.00
Period7 1465150.48  1622354.24  1000000.00  50.50   123.00
Period8 1426084.73  1632609.46  1000000.00  50.50   0.00
Period9 1395144.09  370334.88   1000000.00  50.50   0.00
Period10    1347280.57  0.00    1000000.00  50.50   0.00
Period11    1374741.53  0.00    1000000.00  50.50   0.00
Period12    1331704.11  0.00    1000000.00  50.20   0.00
Period13    1367272.27  0.00    1000000.00  50.70   0.00

我的vb代码如下：

    Protected Sub YearList_SelectedIndexChanged(ByVal sender As Object, ByVal e As EventArgs) Handles YearList.SelectedIndexChanged

    Chart1.Visible = True

    mySqlConn = New SqlConnection
    mySqlConn.ConnectionString = "Server=" + dbServerName + "; Database=" + dbCatalogName + "; Trusted_Connection=True;"


    pSql = New SqlCommand

    pSql.Connection = mySqlConn
    pSql.CommandType = CommandType.StoredProcedure
    pSql.CommandText = "dbo.[sp_DW_Transpose_BudgetForecast]"


    pSql.Parameters.Add("@seg1", SqlDbType.NVarChar)
    pSql.Parameters.Add("@seg2", SqlDbType.NVarChar)
    pSql.Parameters.Add("@seg3", SqlDbType.NVarChar)
    pSql.Parameters.Add("@year", SqlDbType.NVarChar)

    pSql.Parameters("@seg1").Value = Seg1.SelectedItem.Text
    pSql.Parameters("@seg2").Value = Seg2.SelectedItem.Text
    pSql.Parameters("@seg3").Value = Seg3.SelectedItem.Text
    pSql.Parameters("@year").Value = YearList.SelectedItem.Text

    pSql.Connection.Open()
    pReader = pSql.ExecuteReader(CommandBehavior.CloseConnection)

    While pReader.Read()
        Chart1.DataBindTable(pReader)
    End While

    pReader.Close()
    pReader = Nothing

    mySqlConn.Close()



End Sub

当我的网络程序准备好创建图表时，我收到以下错误：

Server Error in '/' Application.

Specified method is not supported.

Description: An unhandled exception occurred during the execution of the current web          request. Please review the stack trace for more information about the error and where it   originated in the code. 

Exception Details: System.NotSupportedException: Specified method is not supported.

Source Error: 


Line 111:
Line 112:        While pReader.Read()
Line 113:            Chart1.DataBindTable(pReader)
Line 114:        End While
Line 115:


Stack Trace: 


[NotSupportedException: Specified method is not supported.]
 System.Data.Common.DbEnumerator.Reset() +65
 System.Web.UI.DataVisualization.Charting.ChartImage.GetDataSourceMemberNames(Object     dataSource, Boolean usedForYValue) +2363
 System.Web.UI.DataVisualization.Charting.ChartImage.DataBindTable(IEnumerable dataSource, String xField) +59
 System.Web.UI.DataVisualization.Charting.Chart.DataBindTable(IEnumerable dataSource) +36
 Forecasting.WebForm1.YearList_SelectedIndexChanged(Object sender, EventArgs e) in 
 System.Web.UI.WebControls.ListControl.OnSelectedIndexChanged(EventArgs e) +113
 System.Web.UI.WebControls.DropDownList.RaisePostDataChangedEvent() +143
     System.Web.UI.WebControls.DropDownList.System.Web.UI.IPostBackDataHandler.RaisePostDataChangedEvent() +10
 System.Web.UI.Page.RaiseChangedEvents() +135
 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean    includeStagesAfterAsyncPoint) +4867

 Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET    Version:4.0.30319.1

无论如何，我不确定 Databindtable 是否是我应该使用的正确方法，甚至可能是 Databindcrosstable。我已经盯着这个问题四天了，现在希望您的专业知识能够引导我走向正确的方向。

我相信问题是你正在打电话.DataBindTable()并传递一个DataReader，但 DataReader 可以not实施IEnumerable因此会出现有关该方法不受支持的错误。尝试将数据转储到DataTable or DataSet并将其作为参数传递给.DataBindTable()

Chart.DataBindTable 方法 http://msdn.microsoft.com/en-us/library/dd455374%28v=vs.100%29.aspx