CODEWITHSUNDEEP
asp.netvb.net
HShbib
HShbib

Reputation: 1841

ASP: Passing value

Im trying to pass a value bounded with a button in form1.aspx to form2.aspx

form1.aspx:

<asp:Button ID="Button1" runat="server" Text="Button" CommandArgument = '<%#Eval("Parking_ID")%>' />

the button is within a repeater which is bounded to a datasource that Select * From [Parking]

Each button in the repeater should have a unique parking_Id based on CommandArgument.

In form1.aspx.vb:

Protected Sub repeater1_ItemCommand(ByVal source As Object, ByVal e As System.Web.UI.WebControls.RepeaterCommandEventArgs) Handles repeater1.ItemCommand
        Dim value As Int32 = Convert.ToInt32(e.CommandArgument)
        Response.Redirect("form2.aspx?id=" & value)
        Session("field4") = value

In Form2.aspx.vb:

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Dim field4 As String = CType(Session.Item("field4"), String)
Parking_ID1.Text = field4

But the Parking_ID1.text Label is not showing any values.

Any help would be appreciated

Regards

Upvotes: 0

Views: 834

Answers (2)

Terry_Brown
Terry_Brown

Reputation: 1408

You're redirecting before you set the session.

Also, you can more easily pickup the value in Form2.aspx.vb by just doing:

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Dim field4 As String = Request.Querystring("id")
Parking_ID1.Text = field4

You'll have to forgive my VB.net syntax, long time since I used it, but the concept should work for you.

Extending the answer based upon a request from the poster:

Should you wish to pass multiple parameters across, there are a few ways of doing it, though your model is the right basis for this:

Protected Sub repeater1_ItemCommand(ByVal source As Object, ByVal e As System.Web.UI.WebControls.RepeaterCommandEventArgs) Handles repeater1.ItemCommand
    Dim value As Int32 = Convert.ToInt32(e.CommandArgument)
    Dim dataItem as YourStronglyTypedItem = e.Item.DataItem as YourStronglyTypedItem // c# there - sorry
    Session("field4") = dataItem.Property1
    Session("field5") = dataItem.Property2 // etc.
    Response.Redirect("form2.aspx?Parking_ID=" & value & "&OtherProperty=" & dataItem.Property2)

The syntax isn't ideal (and some of it is in c#, sorry!), but essentially, if you can grab the bound data item (through e.Item.DataItem) and cast it to whatever object you bound in the first place then you can grab as many properties from it as you like.

So say you databound List to it. e.Item.DataItem cast to Widget will give you the values of that particular widget, then you can either set multiple session values (or indeed just put the whole widget into session), or you can pass multiple query string parameters as I have done above.

hope that helps?

Upvotes: 2

Pankaj
Pankaj

Reputation: 10115

You can follow the correct syntax below. Dim field4 As String = Request.QueryString["id"]

Upvotes: 0

Related Questions