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Page buttons don't work when grid not ajaxified

3 Answers 72 Views

Grid

This is a migrated thread and some comments may be shown as answers.

Justin Lee asked on 15 Jul 2010, 03:00 PM

I have RadGrid on a page the is not ajaxified (for a reason). The page Mode is set to "NextPrevAndNumeric". Clicking on the Numeric page buttons work, but the Next and Previous buttons do not. When I click on them, they throw the error "Invalid postback or callback argument. Event validation is enabled using <pages enableEventValidation="true"/> ..." I set enableEventValidation="false" (just to test), and the error goes away, but the buttons do nothing.

I created a simple version to demonstrate. (remember, there is no RadAjaxManager or RadUpdatePanel on the page)

<html xmlns="http://www.w3.org/1999/xhtml" >

<head runat="server">

</head>

<body>

<form id="form1" runat="server">

<asp:ScriptManager runat="server"></asp:ScriptManager>

<telerik:RadGrid ID="theGrid" runat="server" AutoGenerateColumns="false"

OnNeedDataSource="theGrid_NeedDataSource"

EnableViewState="false" AllowPaging="true">

<MasterTableView PageSize="25">

<PagerStyle AlwaysVisible="true" Position="Top"

Mode="NextPrevAndNumeric" />

<Columns>

<telerik:GridBoundColumn HeaderText="Col1" DataField="Col1">

</telerik:GridBoundColumn>

<telerik:GridBoundColumn HeaderText="Col2" DataField="Col2">

</telerik:GridBoundColumn>

</Columns>

</MasterTableView>

</telerik:RadGrid>

</form>

</body>

</html>

Code Behind:

protected void theGrid_NeedDataSource(object source, Telerik.Web.UI.GridNeedDataSourceEventArgs e)

{

DataTable tbl = new DataTable();

tbl.Columns.Add("Col1", typeof(string));

tbl.Columns.Add("Col2", typeof(string));

for (int i = 0; i < 50; i++)

{

tbl.Rows.Add(i.ToString(), i.ToString());

}

theGrid.DataSource = tbl;

}

3 Answers, 1 is accepted

answered on 15 Jul 2010, 03:56 PM

Hi Justin,

The cause for the issue is that you have disabled RadGrid's ViewState. Please enable it for proper paging.
ASPX:

<telerik:RadGrid ID="theGrid" runat="server" AutoGenerateColumns="false"

OnNeedDataSource="theGrid_NeedDataSource"

EnableViewState="true" AllowPaging="true">

<MasterTableView PageSize="25">

<PagerStyle AlwaysVisible="true" Position="Top"

Mode="NextPrevAndNumeric" />

<Columns>

.............

Greetings,
Pavlina
the Telerik team

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