System.ArgumentOutOfRangeException: DateTime.

[jharwood]

I am getting the following error when I go to run my application.  I am trying to graph a value vs DateTime.  The DateTime and value are stored in a database.

Error:

System.ArgumentOutOfRangeException: Only double values within a range of 0, or DateTime.MinValue, to 315537897599, or DateTime.MaxValue, can be converted to DateTime.
Parameter name: source

My code:

Dim start As DateTime Dim finish As DateTime Dim increment As TimeSpan

start = Session(

"periodStartSpanDTM")

finish = Session(

"periodEndSpanDTM")

increment = TimeSpan.FromMinutes(30)

Dim xAxis As XAxis = graph.XAxes(0) Dim yAxis As YAxis = graph.YAxes(0)

xAxis.Mode = AxisMode.Fixed

xAxis.AutoSpacing =

False

xAxis.MajorDivisions.Base =

CType(DataConverter.Convert(start, GetType(Double)), Double)

xAxis.MajorDivisions.Interval =

CType(DataConverter.Convert(TimeSpan.FromDays(1), GetType(Double)), Double)

xAxis.MinorDivisions.Interval =

CType(DataConverter.Convert(TimeSpan.FromHours(1), GetType(Double)), Double)

xAxis.Range =

New Range(CType(DataConverter.Convert(start, GetType(Double)), Double), CType(DataConverter.Convert(finish, GetType(Double)), Double)) Dim Label As String = ddlLabels.SelectedItem.Text.ToString Dim Units As String = ddlLabels.SelectedValue.ToString Dim Points As Double Dim rtimes As DateTime Dim Time As Double Dim myConn As OleDbConnection = New OleDbConnection("ConnectionString") Dim myCmd As OleDbCommand = New OleDbCommand("Query Statement", myConn)

myConn.Open()

Dim aReader As OleDbDataReader = myCmd.ExecuteReader() While aReader.Read

Points =

CDbl(aReader("value"))

rtimes = aReader(

"acqGMT")

Time =

CDbl(DataConverter.Convert(rtimes, GetType(Double)))

ls.Text +=

"Value(" & aReader("acqGMT") & "): " & aReader("value") & "<Br />"

graph.PanXY(Time, Points)

End While

myConn.Close()

[Brandon_V]

Please follow David's advice in the duplicate forum here.

In the future, it may be better to keep all forum posts to one thread rather than having multiple threads about the same issue. This way there is only one place that people will go to help you out on the subject.