Databases
StackOverflow2013
Postsdbo
POteaching about sessions?
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POteaching about sessions?
    primarykey
    data
    text
    <p>Can any one teach me how to use sessions? I have a login page which refers to mysql db table named User which includes UserID="variable number", username and password. Id like to be able to store the userid in a session so I can call it inside the users profile when he logs in. </p> <p>How is this done? Any relevant coding and placement of specific coding would be helpful as Im just not picking it up at all. Does it go inside the code behind (.cs file) or is it held in the html of the aspx page? or both and how? How does the session work across multiple inner pages (once logged in you can broswe more than one page related to your own profile) </p> <pre><code> using System.Data.Odbc; partial class login : System.Web.UI.Page { protected void Login1_Authenticate(object sender, System.Web.UI.WebControls.AuthenticateEventArgs e) { OdbcConnection cn = new OdbcConnection("Driver={MySQL ODBC 3.51 Driver};Server=localhost;Database=mydb; User=root;Password=;"); cn.Open(); OdbcCommand cmd = new OdbcCommand("Select * from login where username=? and password=?", cn); //Add parameters to get the username and password cmd.Parameters.Add("@username", OdbcType.VarChar); cmd.Parameters["@username"].Value = this.Login1.UserName; cmd.Parameters.Add("@password", OdbcType.VarChar); cmd.Parameters["@password"].Value = this.Login1.Password; OdbcDataReader dr = default(OdbcDataReader); // Initialise a reader to read the rows from the login table. // If row exists, the login is successful dr = cmd.ExecuteReader(); if (dr.HasRows) { e.Authenticated = true; // Event Authenticate is true } } } </code></pre>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USGarrith Graham
    1. USGarrith Graham
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    3. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POteaching about sessions?
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. POteaching about sessions?
      1. This table or related slice is empty.
      1. VTUpMod
    1. COBear in mind that the session collection is volatile so your UserID value may be removed midsession. You should always provide a fallback to repopulate values in the event that they are removed.
      singulars
      1. POteaching about sessions?
      1. USdetaylor
    2. COhow? what other options would you suggest if sessions are that volatile?
      singulars
      1. POteaching about sessions?
      1. USGarrith Graham
    3. COif (Session["UserID"] == null)...then look up the ID again
      singulars
      1. POteaching about sessions?
      1. USDOK
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload