Question Public variables in aspx.vb

[raysefo]

Hi,

I declared public variables in my aspx.vb.

Partial Class PendingApproval
    Inherits System.Web.UI.Page
    
    Public formType As Integer
    Public taskID As String
    Public check As Integer = 0
    Public creator As String
    Public formID As String

then in my GridView1_RowCommand Sub, i set values from aspx. Everything works fine so far.

        Dim rowIndex As Int32 = Convert.ToInt32(e.CommandArgument.ToString())
        formID = GridView1.DataKeys(rowIndex).Values("EformID").ToString()
        formType =  Convert.ToInt32(GridView1.DataKeys(rowIndex).Values("EformType").ToString())
        taskID = GridView1.DataKeys(rowIndex).Values("TaskID").ToString()


        check = 1

But when i try to use those variables in another Sub;it says they are NULL???

Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim task As New Task
        With task
            .FormType = formType

        End With
        
    End Sub

How can i set value to a variable and then use it from another Sub?

thanks in advance.

Best regards

 

[JohnH]

These variables resets to default values (0 for Integer) each postback. Check this out: ASP.NET State Management Overview

 

[kulrom]

You can store the values in a property ... e.g.

    Public Property TaskID() As String
        Get
            Dim id As String = CType(ViewState("taskid"), String)
            If id IsNot Nothing Then
                Return id
            Else
                Return String.Empty
            End If
        End Get
        Set(ByVal value As String)
            ViewState("taskid") = value
        End Set
    End Property

to set the TaskID property just add the value to the viewstate e.g.

ViewState.Add("taskid", GridView1.DataKeys(rowIndex).Values("TaskID").ToString)

To get the value from another method/routine just call the TaskID property e.g.

Response.Write(TaskID)