CODEWITHSUNDEEP
c#asp.netsessionsave
Carrie
Carrie

Reputation: 137

How to save a session in C#?

For example, I have

Session["PatientName"] = patientNameTextBox.Text;

After information is entered into the textbox, a button will be clicked to save the session but I'm not quite sure how to do that.

Any help is appreciated. Thanks :).

Upvotes: 0

Views: 14296

Answers (3)

Habib
Habib

Reputation: 223227

If you place the code against Button_Click event, then the above line Session["PatientName"] = patientNameTextBox.Text; would save the Text value in the session. To retrieve it back you can do:

string patientName = Session["PatientName"] != null ? Session["PatientName"].ToString() 
                                                     : ""; //or null

Remember not to store too much information in sessions, since they are maintained on server for each user.

Upvotes: 3

Swag
Swag

Reputation: 2140

This is how you can save a session when a button is clicked:

protected void buttonSaveSession_Click(object sender, EventArgs e)
{
    string patientName = textBoxPatientName.Text;
    Session["PatientName"] = patientName;
}

This is how you can check or someone has a session:

protected void Page_Load(object sender, EventArgs e)
{
    if (Session["PatientName"] != null)
    {
        //Your Method()
    }
}

Upvotes: 0

Martin Mulder
Martin Mulder

Reputation: 12944

You can check if the value is inside the Session by doing this:

if (Session["PatientName"] != null) 
    ...

You can retrieve the value by doing this:

// Remember to cast it to the correct type, because Session only returns objects.
string patientName = (string)Session["PatientName"];

If you are not sure if there is a value inside and you want a default value, try this:

// Once again you have to cast. Use operator ?? to optionally use the default value.
string patientName = (string)Session["PatientName"] ?? "MyDefaultPatientName";

To put your answer back in a textbox or label:

patientLabel.Text = patientName;

Upvotes: 1

Related Questions