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
Solved

Pass Session Variables to SQL Query to GridView

Posted on 2011-09-07
4
466 Views
Last Modified: 2012-05-12
Experts,

Having some difficulties with this. I am passing session variables from 3 dropdownlists on one page to another page. On the 2nd page, I am grabbing the variables  and trying to use them in a SQL Query to return results to a GridView. Could really use some help on this.


public partial class results : System.Web.UI.Page
    {
        SqlConnection con = new SqlConnection(WebConfigurationManager.ConnectionStrings["MyConnect"].ConnectionString);
        protected void Page_Load(object sender, EventArgs e)
        {
            
                string ssState = (string)(Session["ssState"]);
                string ssCity = (string)(Session["ssCity"]);                
                string ssType = (string)(Session["ssType"]);

                con.Open();
                SqlCommand com = new SqlCommand("SELECT * FROM dbo.tbl_Property WHERE Prop_State=@ssState AND Prop_City=@ssCity AND Prop_Type=@ssType", con);
                com.Parameters.AddWithValue("@ssState", ssState);
                com.Parameters.AddWithValue("@ssCity", ssCity);                
                com.Parameters.AddWithValue("@ssType", ssType);

                SqlDataAdapter myAdapter = new SqlDataAdapter(com);
                DataSet dSet = new DataSet();
                myAdapter.Fill(dSet);   

                
                
                myGrid.DataSource = dSet;
                myGrid.DataBind();

                con.Close();
            
        }
    }

Open in new window

0
Comment
Question by:Shaggy1
  • 2
  • 2
4 Comments
 
LVL 28

Accepted Solution

by:
strickdd earned 500 total points
ID: 36496504
Are you sure you have values in the session variables when you get to this section of code? Debug and step through it to be sure. If you do, take those values and put them in your SQL string and execute that string directly against the SQL server to make sure that you are getting rows back.
0
 

Author Comment

by:Shaggy1
ID: 36496547
Thanks for the help. It seems as though I am getting the values. To test it, i used a label to make sure i was getting the values. I had seen that programmers have been placing the values in the SQL string, but wasn't sure if that was the safest way to do it.
Thanks again!
0
 
LVL 28

Expert Comment

by:strickdd
ID: 36496985
The way you have the SQL - parameterized - is perfect. I'm just suggesting to manaully add the values to the SQL so you can run it in management studio and make sure results are returned. Don't shy away from parameterization!
0
 

Author Closing Comment

by:Shaggy1
ID: 36497259
Well, looks like it was one of the variables...i just removed one of them, and the Grid filled up.
Thanks for the help!
0

Featured Post

PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
database level memory cache..? 8 31
get_systemdrive info from tsql? 1 18
Amazon S3 .Net error 5 18
too many installs coming along with SQL 2016? 1 17
This article explains how to reset the password of the sa account on a Microsoft SQL Server.  The steps in this article work in SQL 2005, 2008, 2008 R2, 2012, 2014 and 2016.
Ever needed a SQL 2008 Database replicated/mirrored/log shipped on another server but you can't take the downtime inflicted by initial snapshot or disconnect while T-logs are restored or mirror applied? You can use SQL Server Initialize from Backup…
This video shows how to quickly and easily add an email signature for all users on Exchange 2016. The resulting signature is applied on a server level by Exchange Online. The email signature template has been downloaded from: www.mail-signatures…

860 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