Advertisement

10.20.2004 at 04:42AM PDT, ID: 21175347
[x]
Attachment Details
[x]
The Solution Rating System

With so many solutions, how can you tell which solutions are most likely to help you and which ones are not? To provide you with a tool to use, we rate our solutions based on various elements that most accurately determine if a solution is a quality solution. To explain what factors affect the solution rating, here are the elements we take into consideration when formulating our solution rating.

  • The Grade of the Solution
  • The Zone Rank of the Expert Providing the Solution
  • The Number of Author and Expert Comments
  • The Number of Experts Contributing
  • The Feedback of the Community

Your Input Matters
Because of the way the system is set up, the most important variable in this equation is you. As a member of Experts Exchange, you are able to cast your vote on the quality of the solutions in regard to how complete, accurate, helpful and easy to understand each solution is. When you provide your feedback, each rating is adjusted accordingly. So, if you see a solution that has a poor rating that you think is a good solution, let us know by rating it. As you do, the rating will be adjusted and will become more accurate for other members of our site.

If you have any suggestions that you would like to make for our rating system, please ask a question in the Suggestions Zone of Community Support.

Thank you!

8.8

Invalid cast from DateTime to Single.

Asked by ridi786 in Active Server Pages (ASP)

Tags: , ,

Hi im having a problem using asp.net web matrix

trying to bind results to a web grid.

gives me the error on the topic

Code i have is as follows:

Sub Page_Load(o as object, e as EventArgs)
  Dim reader As IDataReader = GetReader()

  Dim chart As New SmoothLineChart()
  chart.DataXValueField = "profit"
  chart.DataYValueField = "date"
  chart.DataSource = reader
  chart.DataBind()
  reader.Close()

  ChartControl1.Charts.Add(chart)
  ChartControl1.RedrawChart()
End Sub

Function GetReader() As IDataReader
  Dim connection As new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=\\PATH TO DB")
  Dim command As new OleDbCommand("SELECT *from DB where a.camp_id = 'INACT01'", connection)
  connection.Open()
  Return command.ExecuteReader(CommandBehavior.CloseConnection)
End Function


im getting the error on the following Line 14

Exception Details: System.InvalidCastException: Invalid cast from DateTime to Single.

Source Error:


Line 12:       chart.DataYValueField = "date"
Line 13:       chart.DataSource = reader
Line 14:       chart.DataBind()
Line 15:       reader.Close()
Line 16:    
 
Anyone can help me?

Thx in advanceStart Free Trial
[+][-]10.20.2004 at 06:34AM PDT, ID: 12357975

At Experts Exchange, members can ask their questions to thousands of technology professionals, also known as Experts. Experts compete and collaborate to answer those questions by leaving comments like this one.

Start your 30-day free trial to view this Expert Comment or ask the Experts your question.

 
[+][-]10.20.2004 at 06:48AM PDT, ID: 12358145

Often, when Experts are collaborating with members who have asked questions, they will request additional information about the problem. Askers respond with an author comment like this one.

Start your 30-day free trial to view this Author Comment or ask the Experts your question.

 
[+][-]10.20.2004 at 07:06AM PDT, ID: 12358369

At Experts Exchange, members can ask their questions to thousands of technology professionals, also known as Experts. Experts compete and collaborate to answer those questions by leaving comments like this one.

Start your 30-day free trial to view this Expert Comment or ask the Experts your question.

 
[+][-]10.20.2004 at 07:15AM PDT, ID: 12358449

View this solution now by starting your 30-day free trial. Setting up your free trial is quick, easy, and secure. We will return you to this solution, unlocked, when you're done.

 

About this solution

Zone: Active Server Pages (ASP)
Tags: cast, datetime, from
Sign Up Now!
Solution Provided By: jitganguly
Participating Experts: 1
Solution Grade: B
 
 
[+][-]10.20.2004 at 07:41AM PDT, ID: 12358758

Often, when Experts are collaborating with members who have asked questions, they will request additional information about the problem. Askers respond with an author comment like this one.

Start your 30-day free trial to view this Author Comment or ask the Experts your question.

 
 
Loading Advertisement...
20081112-EE-VQP-44