CODEWITHSUNDEEP
c#asp.netsession
John
John

Reputation: 487

How to retrieve session value and do a check in other page in asp.net

 reader = server.ExecuteReader(CommandType.Text, getPermissionlistQuery, param);
        var results = new List<string>();
        while (reader.Read())
        {
            results.Add(reader["permissionName"].ToString());
        }
        reader.Close();
        Session.Add("Permissions", results);

I am adding results to the session, how can I retrieve it in another page.

results is a list of values

var permissionList = Session["Permissions"];         
        string check = "Create Groups";
        if (permissionList.Any(item => item.Equals(check)))
        {
            // results contains the value in check 
        }

and I want to check whether the permission is available in the Permission list but the if statement is throwing a error

'object' does not contain a definition for 'Any' and no extension method 'Any' accepting a first argument of type 'object' could be found (are you missing a using directive or an assembly reference?)

Upvotes: 0

Views: 1453

Answers (3)

KreepN
KreepN

Reputation: 8598

UPDATED: Change bottom code to this:

IList<String> collection = (IList<String>) Session["Permissions"];

string check = "Create Groups";

if (collection.Any(item => item.Equals(check)))
{
   // results contains the value in check 
}

Also, reference:

using System.Collections.Generic;
using System.Linq;

enter image description here

Upvotes: 1

Pawan Mishra
Pawan Mishra

Reputation: 7268

Looks like permissionList is getting populated i.e. the code to pull data from session is working fine. If this wouldn't have been the case, then you would have received NullReference exception.

My guess here is that the real culprit is "var" keyword. When you pull PermissionList from session, it is retrieved as an "Object". Try explicitly casting the permissionList object i.e.

List<string> permissionList = Session["Permissions"];

or

var permissionList = (List<string>)Session["Permissions"];

Upvotes: 0

Frazell Thomas
Frazell Thomas

Reputation: 6111

Just call String value = (String)Session["Key"]; to get the value

Session["Key"] will pull the value in session for that key. If the key doesn't exist it will return Null.

You may want to read up on ASP.NET Session as well.

Update

In response to your edit, ensure you have references to Linq for your project. Any is a Linq extension.

Upvotes: 1

Related Questions