problem with DataReader ASP.NET (Visual Basic)

Posted by ZiGi on Stack Overflow See other posts from Stack Overflow or by ZiGi
Published on 2010-05-28T12:01:25Z Indexed on 2010/05/28 12:01 UTC
Read the original article Hit count: 206

Filed under:

ASP.NET

|

visual-basic

|

datareader

Hey,

I have this problem :

[InvalidOperationException: No data exists for the row / column.]
   System.Data.OleDb.OleDbDataReader.DoValueCheck(Int32 ordinal) +1029063
   System.Data.OleDb.OleDbDataReader.GetInt32(Int32 ordinal) +12
   ASP.addsousvoyage_aspx.hdVoyage_SelectedIndexChanged(Object sender, EventArgs e) in C:\Users\ZiGi\Desktop\VisualDesign\addSousVoyage.aspx:222
   System.Web.UI.WebControls.ListControl.OnSelectedIndexChanged(EventArgs e) +111
   System.Web.UI.WebControls.DropDownList.RaisePostDataChangedEvent() +134
   System.Web.UI.WebControls.DropDownList.System.Web.UI.IPostBackDataHandler.RaisePostDataChangedEvent() +10
   System.Web.UI.Page.RaiseChangedEvents() +165
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1485

When I do this :

MsgBox(myReader1.GetInt32(0).ToString)

Even if :

MsgBox(myReader1.FieldCount) returning 1 as value and the field(0) is integer.

What's the problem ?

© Stack Overflow or respective owner

Related posts about ASP.NET

Migrating ASP.NET MVC 1.0 applications to ASP.NET MVC 2 RTM

as seen on ASP.net Weblogs - Search for 'ASP.net Weblogs'
Note: ASP.NET MVC 2 RTM isn’t yet released! But this tool will help you get your ASP.NET MVC 1.0 applications ready for when it is! I have updated the MVC App Converter to convert projects from ASP.NET MVC 1.0 to ASP.NET MVC 2 RTM. This should be last the last major change to the MVC App Converter… >>> More
April 14th Links: ASP.NET, ASP.NET MVC, ASP.NET Web API and Visual Studio

as seen on ASP.net Weblogs - Search for 'ASP.net Weblogs'
Here is the latest in my link-listing blog series: ASP.NET Easily overlooked features in VS 11 Express for Web: Good post by Scott Hanselman that highlights a bunch of easily overlooked improvements that are coming to VS 11 (and specifically the free express editions) for web development: unit… >>> More
Use ASP.NET 4 Browser Definitions with ASP.NET 3.5

as seen on ASP.net Weblogs - Search for 'ASP.net Weblogs'
We updated the browser definitions files included with ASP.NET 4 to include information on recent browsers and devices such as Google Chrome and the iPhone. You can use these browser definition files with earlier versions of ASP.NET such as ASP.NET 3 Read More......(read more) >>> More
ASP.NET webforms + ASP.NET Ajax versus ASP.NET MVC and Ajax framework freedom

as seen on Stack Overflow - Search for 'Stack Overflow'
If given the choice, which path would you take? ASP.NET Webforms + ASP.NET AJAX or ASP.NET MVC + JavaScript Framework of your Choice Are there any limitations that ASP.NET Webforms / ASP.NET AJAX has vis-a-vis MVC? >>> More
ASP.NET MVC 2 Released

as seen on ASP.net Weblogs - Search for 'ASP.net Weblogs'
I’m happy to announce that the final release of ASP.NET MVC 2 is now available for VS 2008/Visual Web Developer 2008 Express with ASP.NET 3.5. You can download and install it from the following locations: Download ASP.NET MVC 2 using the Microsoft Web Platform Installer Download… >>> More

Related posts about visual-basic

how do i run visual basic script from visual basic

as seen on Stack Overflow - Search for 'Stack Overflow'
The script is used to enable or disable lan. Id like to run it from a vb appln by integrating it could someone help plz. >>> More
Decimal data type in Visual Basic 6.0

as seen on Stack Overflow - Search for 'Stack Overflow'
I need to do calculations (division or multiplication) with very large numbers. Currently I am using Double and getting the value round off problems. I can do the same calculations accurately on C# using Decimal type. I am looking for a method to do accurate calculations in VB6.0 and I couldn't find… >>> More
Microsoft Visual Studio Release History/Timelines/Milestones

as seen on Microsoft .NET Support Team - Search for 'Microsoft .NET Support Team'
1975 – Bill Gates and Paul Allen write a version of Basic for Altair 8080 1982 – IBM releases BASCOM 1.0 (developed by Microsoft) 1983 – Microsoft Basic Compiler System v5.35 for MS-DOS release 1984 - Microsoft Basic Compiler System v5.36 release 1985 – Microsoft QuickBASIC 1.0 1986 – Microsoft… >>> More
Visual Basic 2010 Language Enhancements

as seen on 4 Guys From Rolla - Search for '4 Guys From Rolla'
Earlier this month Microsoft released Visual Studio 2010, the .NET Framework 4.0 (which includes ASP.NET 4.0), and new versions of their core programming languages: C# 4.0 and Visual Basic 10 (also referred to as Visual Basic 2010). Previously, the C# and Visual Basic programming languages were managed… >>> More
This Week's Developer Reading List

as seen on Dr Dobbs - Search for 'Dr Dobbs'
Design, Visual Basic, and Google AppEngine Google AppEngine - Visual Basic - Google - Tools - Chats and Forums >>> More