?
Solved

Reading data from SQL - C# and ASP.NET

Posted on 2013-06-04
1
Medium Priority
?
449 Views
Last Modified: 2013-06-04
I'm trying to read data from MS-SQL and assign returned the value in the ASP.net page which is text field.

It keeps showing like
"Invalid attempt to read when no data is present.."
Exception Details: System.InvalidOperationException: Invalid attempt to read when no data is present.

when I query those statement in MS-SQL, data is surely there..

I'm trying to figure it out. I could not resolve yet..
Can I assign like

EmployeeFirstName.Text = sdr["fname"] == DBNull.Value ? String.Empty : ((string)sdr["fname"]).Trim();

Thanks in advance.

my current code in c# FYI
===========================================
using (var cmd = conn.CreateCommand())
      {
         conn.Open();
         cmd.CommandText = "SELECT * FROM [Employee] with (nolock) where eID=@eID";
                    cmd.Parameters.Add(new SqlParameter("eID", SqlDbType.Int, 0) { Value = eIDOf.SelectedItem.Value });
                    cmd.Prepare();
                    using (SqlDataReader sdr = cmd.ExecuteReader())
                    {
                        EmployeeFirstName.Text = sdr["fName"] == DBNull.Value ? String.Empty : ((string)sdr["fName"]).Trim();
                        sdr.Close();
                    }

    }






===========================================
0
Comment
Question by:ndoorsinteractive
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
1 Comment
 
LVL 9

Accepted Solution

by:
Beartlaoi earned 1500 total points
ID: 39220478
You need to call sdr.Read() before you access its columns.
0

Featured Post

On Demand Webinar: Networking for the Cloud Era

Ready to improve network connectivity? Watch this webinar to learn how SD-WANs and a one-click instant connect tool can boost provisions, deployment, and management of your cloud connection.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Today I had a very interesting conundrum that had to get solved quickly. Needless to say, it wasn't resolved quickly because when we needed it we were very rushed, but as soon as the conference call was over and I took a step back I saw the correct …
Whether you've completed a degree in computer sciences or you're a self-taught programmer, writing your first lines of code in the real world is always a challenge. Here are some of the most common pitfalls for new programmers.
This is Part 3 in a 3-part series on Experts Exchange to discuss error handling in VBA code written for Excel. Part 1 of this series discussed basic error handling code using VBA. http://www.experts-exchange.com/videos/1478/Excel-Error-Handlin…
If you’ve ever visited a web page and noticed a cool font that you really liked the look of, but couldn’t figure out which font it was so that you could use it for your own work, then this video is for you! In this Micro Tutorial, you'll learn yo…

752 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question