How to get value from dictionary session

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i have stored multiple values in session using dictionary like below

<pre> var get_values = new Dictionary<string, object>();

                        get_values["name"] = model.Name; ;
                        get_values["address"] = model.Address;
                        get_values["phone"] = model.Phone;
                        get_values["email"] = model.Email;
                        

                        Session["sess_values"] = get_values;

now i want to get values from session one by one. my question is how to get values from session like name, address etc.?

What I have tried:

<pre><pre> var get_values = new Dictionary<string, object>();

                        get_values["name"] = model.Name; ;
                        get_values["address"] = model.Address;
                        get_values["phone"] = model.Phone;
                        get_values["email"] = model.Email;
                        

                        Session["sess_values"] = get_values;

Posted 25-Aug-17 4:59am

Harpreet_125

Updated 25-Aug-17 5:21am

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OriginalGriff · Answer 1 · 2017-08-25T05:18:00

Solution 1

Try:

C#

Dictionary<string, string> values = Session["sess_values"] as Dictionary<string, string>;
if (values != null)
   {
   string name = values["name"];
    ...

Posted 25-Aug-17 5:18am

OriginalGriff

Comments

Richard Deeming 25-Aug-17 11:23am

You'd need to change the definition of the value you stored in the session as well - from Dictionary<string, object> to Dictionary<string, string>.

OriginalGriff 25-Aug-17 11:41am

True - I missed that.

Richard Deeming · Answer 2 · 2017-08-25T05:21:00

Simple: retrieve the dictionary from the session; if it's not null, try to retrieve the value from the dictionary.

C#

var values = (Dictionary<string, object>)Session["sess_values"];
if (values != null)
{
    object value;
    if (values.TryGetValue("name", out value))
    {
        string s = value as string;
        if (s != null)
        {
            model.Name = s;
        }
    }
}

If you're using a recent version of Visual Studio, you can simplify that slightly:

C#

var values = (Dictionary<string, object>)Session["sess_values"];
if (values?.TryGetValue("name", out object value) && value is string s)
{
    model.Name = s;
}

But it's not obvious why you're using a Dictionary<TKey, TValue> in the first place, when you could just use the session directly:

C#

Session["name"] = model.Name;
model.Name = (string)Session["name"];