How can I show the user input to another page in ASP.NET (in VB.NET)

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I have a page WebControls.aspx. I have some textBox in that page. I want to show that data in other page (Results.aspx) when the user click a button. I have this code but not working...

What I have tried:

'WebControls.aspx
   Private Sub WebControls_Load(sender As Object, e As EventArgs) Handles Me.Load
       If IsPostBack Then
           Dim firstName As String = firstNameTextBox.Text
           Session.Add("Όνομα: ", firstName)
           Session.Add("Επώνυμο: ", lastNameTextBox.Text)
           Session.Add("E-mail: ", emailTextBox.Text)
           Session.Add("Τηλέφωνο: ", phoneTextBox.Text)
           Session.Add("Βιβλίο: ", booksDropDownList.SelectedItem.ToString)
           Session.Add("Λειτουργικό Σύστημα: ", osRadioButtonList.SelectedItem.ToString)


           'Dim ar As New ArrayList()
           'ar.Add("Όνομα: " & firstNameTextBox.Text)
           'ar.Add("Επώνυμο: " & lastNameTextBox.Text)
           'ar.Add("E-mail: " & emailTextBox.Text)
           'ar.Add("E-mail: " & phoneTextBox.Text)
           'ar.Add("Βιβλίο: " & booksDropDownList.SelectedValue)
           'ar.Add("Λειτουργικό Σύστημα: " & osRadioButtonList.SelectedValue)
           'Session("InputData") = ar
       End If

   End Sub

'Results.aspx
    Private Sub Results_Load(sender As Object, e As EventArgs) Handles Me.Load
        For Each keyName In Session.Keys
            outputLabel &= (keyName & Session(keyName))
        Next
        'Dim ar As New ArrayList()
        'ar = Session("InputData")
        'outputListBox.DataSource = ar
        'outputListBox.DataBind()

    End Sub

Posted 8-Apr-19 3:37am

Member 14172062

Updated 8-Apr-19 6:32am

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2 solutions

Solution 2

Seems like you commented out your code. Also, you need to put your code inside your Button's Click event instead of Page_Load. You can try something like this:

VB

Private Sub Button1_Click(ByVal sender As Object, ByVal e As EventArgs)
End Sub          
           Dim ar As New ArrayList()
           ar.Add("Όνομα: " & firstNameTextBox.Text)
           ar.Add("Επώνυμο: " & lastNameTextBox.Text)
           ar.Add("E-mail: " & emailTextBox.Text)
           ar.Add("E-mail: " & phoneTextBox.Text)
           ar.Add("Βιβλίο: " & booksDropDownList.SelectedValue)
           ar.Add("Λειτουργικό Σύστημα: " & osRadioButtonList.SelectedValue)
           Session("InputData") = ar
           Response.Redirect("Result.aspx")
End Sub

Then in your Result.aspx page, you can reference the data like this:

VB

Private Sub Results_Load(sender As Object, e As EventArgs) Handles Me.Load
       If Session("InputData") IsNot Nothing Then
    		Dim data As ArrayList = CType(Session("InputData"), ArrayList)
		    outputListBox.DataSource = data
        	outputListBox.DataBind()
	End If   
End Sub

Note that Sessions is just one of the option to transfer data from one page to another. You can also use either:

1. Server.Transfer() method
2. PostBackURL of a Button
3. QueryStrings
4. POST Request

Posted 8-Apr-19 6:33am

Vincent Maverick Durano

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#realJSOP · Accepted Answer · 2019-04-08T04:55:00

Solution 1

You have to cast the data to it's appropriate type, even if it's a string. In your case, it's an ArrayList of strings, so you have to cast it appropriately.

Posted 8-Apr-19 4:55am

#realJSOP