Gridview dissapears when changing page

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my gridview dissapears when i change page

VB

Protected Sub GridPrevistos_PageIndexChanging(ByVal sender As Object, ByVal e As GridViewPageEventArgs) Handles GridPrevistos.PageIndexChanging
        GridPrevistos.PageIndex = e.NewPageIndex
        GridPrevistos.DataBind()
    End Sub

pls remind that um using vb.net and asp.net
ty all :)

Posted 2-Jun-13 23:11pm

dp24

Updated 3-Jun-13 3:08am

v2

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Rockstar_ · Accepted Answer · 2013-06-02T23:14:00

Solution 1

Hi,

Please check the event in the design, i think the pageIndexChanging event is not handled..

The error message is clearly stated..

Posted 2-Jun-13 23:14pm

Rockstar_

Updated 2-Jun-13 23:15pm

v2

Comments

dp24 3-Jun-13 6:07am

im sorry, im kinda newbie its asp! i dont get the error now, but the gridview dissapers when i press in page 2 or 3... can you help me?

Rockstar_ 3-Jun-13 6:15am

go to the design of the gridview control and check whether the PageIndexChanging event is there or not?

Otherwise paste ur gridview design code here...

dp24 3-Jun-13 6:20am

yes it is, pls check
http://i.imagebanana.com/img/amdt43hh/Capturar.PNG

Rockstar_ 3-Jun-13 6:23am

Paste ur source code dear?

dp24 3-Jun-13 6:29am

Protected Sub Mes_SelectedIndexChanged(ByVal sender As Object, ByVal e As EventArgs) Handles Mes.SelectedIndexChanged
Me.anomes.Text = Me.Ano.SelectedValue & Me.Mes.SelectedValue

abre_ligacao()
MsgBox(Me.numempresa.Text)

Dim sqlprevistos As String = "SELECT top 100 num as Número,nome as Nome, ntrab as N_Trab,empresa as Empresa,cobranca as Cobrança,ROUND(remfixa*0.01,2) as Quota FROM Socios WHERE empresa='" & Me.numempresa.Text & "' ORDER BY num"
'Dim sqlprevistos As String = "SELECT * FROM cobranca"

Dim dsprevistos As DataSet = GetData(sqlprevistos)

If (dsprevistos.Tables.Count > 0) Then
GridPrevistos.DataSource = dsprevistos
GridPrevistos.DataBind()
Else
MsgBox("Não há dados para carregar!")
End If

fecha_ligacao()

End Sub

Rockstar_ 3-Jun-13 6:34am

Design source code dear? not code behind code...

Rockstar_ 3-Jun-13 6:36am

And this is selectedIndex changed event, not pageIndexChanged Event...

please rectify..

dp24 3-Jun-13 6:39am

i dont have a pageIndexChanged Event

Rockstar_ 3-Jun-13 6:41am

If not there then create it by selecting the gridview ,go to solution explorer and then event , search for pageindexchanging event and then double click to open..

dp24 3-Jun-13 6:47am

and again im sorry for being dumb, but what do i put in the event?

Protected Sub GridPrevistos_PageIndexChanging(ByVal sender As Object, ByVal e As GridViewPageEventArgs)

End Sub

Rockstar_ 3-Jun-13 6:51am

Now write the page index change code in this event and delete the selectedindexchange event.

dp24 3-Jun-13 6:56am

Protected Sub GridPrevistos_SelectedIndexChanged(ByVal sender As Object, ByVal e As GridViewPageEventArgs) Handles GridPrevistos.SelectedIndexChanged, GridPrevistos.PageIndexChanging
GridPrevistos.PageIndex = e.NewPageIndex
GridPrevistos.DataBind()
End Sub

i still press page 2 or 3 and the gridview dissapears

Rockstar_ 3-Jun-13 7:14am

Dear plz remove the selectedIndexchanged event totally

dp24 3-Jun-13 9:05am

hello?

dp24 3-Jun-13 7:34am

i did it, it was the wrong paste

Protected Sub GridPrevistos_PageIndexChanging(ByVal sender As Object, ByVal e As GridViewPageEventArgs) Handles GridPrevistos.PageIndexChanging
GridPrevistos.PageIndex = e.NewPageIndex
GridPrevistos.DataBind()
End Sub

still disappears

skantg · Accepted Answer · 2013-06-03T04:10:00

In your pageindexchanging event you wrote following lines

C#

GridPrevistos.PageIndex = e.NewPageIndex
GridPrevistos.DataBind()

But when writing GridPreVistos.DataBind(), you need to specify the data source again (as you may have provided when you bound this grid for the first time).

in simple words, after you specified the current pageIndex for the gridview you need to bind it again with dataSource. This time it will show the new page as value in e.NewPageIndex.

Hope this will help you.