Get (Retrieve) variables value set in PageLoad on Button Click using C# and VB.Net

Hi nsds,

Please refer below sample.

HTML

<asp:Button ID="btnSave" Text="Save" runat="server" OnClick="Save" />

Home

Defualt

Student ID:
<asp:Label ID="lblPage" runat="server" /><br />
Department ID:
<asp:Label ID="lblName" runat="server" />

Code

C#

private int student_id = 1;
private int dept_id = 1;
protected void Page_Load(object sender, EventArgs e)
{
    if (!IsPostBack)
    {
        student_id = Convert.ToInt32(Session["selected_student_id"]);
        dept_id = GetDeptID(student_id);
    }
}
protected void Save(object sender, EventArgs e)
{
    Session["selected_studentID"] = student_id;
    Session["selected_DEPT_ID"] = dept_id;

    Response.Redirect("Home.aspx");
}
private int GetDeptID(int id)
{
    id = dept_id;

    return id;
}

Home

Defualt

protected void Page_Load(object sender, EventArgs e)
{
    lblPage.Text = Session["selected_studentID"].ToString();
    lblName.Text = Session["selected_DEPT_ID"].ToString();
}

VB.Net

Private student_id As Integer = 1
Private dept_id As Integer = 1

Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load
    If Not IsPostBack Then
        student_id = Convert.ToInt32(Session("selected_student_id"))
        dept_id = GetDeptID(student_id)
    End If
End Sub
Protected Sub Save(ByVal sender As Object, ByVal e As EventArgs)
    Session("selected_studentID") = student_id
    Session("selected_DEPT_ID") = dept_id
    Response.Redirect("HomeVB.aspx")
End Sub

Private Function GetDeptID(ByVal id As Integer) As Integer
    id = dept_id
    Return id
End Function

VB.Net

Defualt

Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load
    lblPage.Text = Session("selected_studentID").ToString()
    lblName.Text = Session("selected_DEPT_ID").ToString()
End Sub

Screenshot