Feb 03, 2009, 4:22 AM
[CLOSED] Possible bug: Viewstate doesn't persist
Hi, I have a
problem with following code. When the page is load ViewState["PageID"]
is loaded and persists during all server trips.
ViewState["PageContentID"] instead, is loaded in the method
RowSelected, but doesn't persist.
RowSelected is not decorated
as [AjaxMethod] neither is static, so ViewState should be visible and
working. So where is the problem?
Here is the code
Markup
Stefano
problem with following code. When the page is load ViewState["PageID"]
is loaded and persists during all server trips.
ViewState["PageContentID"] instead, is loaded in the method
RowSelected, but doesn't persist.
RowSelected is not decorated
as [AjaxMethod] neither is static, so ViewState should be visible and
working. So where is the problem?
Here is the code
Markup
<ext:ScriptManager ID="ScriptManager1" runat="server">
</ext:ScriptManager>
<ext:Store ID="DataStore1" runat="server">
<Reader>
<ext:JsonReader ReaderID="IDContent">
<Fields>
<ext:RecordField Name="Title" />
<ext:RecordField Name="SubTitle" />
<ext:RecordField Name="ContentText" />
</Fields>
</ext:JsonReader>
</Reader>
</ext:Store>
<ext:ViewPort ID="ViewPort1" runat="server">
<Body>
<ext:BorderLayout ID="BorderLayout1" runat="server">
<Center>
<ext:GridPanel ID="grdContents" runat="server"
StoreID="DataStore1"
Frame="false"
Height="400"
Title="Page Contents"
>
<ColumnModel>
<Columns>
<ext:Column DataIndex="Title" Header="Title" Width="165"/>
<ext:Column DataIndex="SubTitle" Header="Subtitle" Width="165"/>
<ext:Column DataIndex="ContentText" Header="Content Text" Width="700"/>
</Columns>
</ColumnModel>
<SelectionModel>
<ext:RowSelectionModel runat="server" SingleSelect="true">
<AjaxEvents>
<RowSelect OnEvent="RowSelected" Buffer="250">
<EventMask Target="CustomTarget" CustomTarget="#{pnlDetail}"/>
<ExtraParams>
<ext:Parameter Name="IDContent" Value="this.getSelected().id" Mode="Raw" />
</ExtraParams>
</RowSelect>
</AjaxEvents>
</ext:RowSelectionModel>
</SelectionModel>
</ext:GridPanel>
</Center>
<South Collapsible="true" >
<ext:Panel ID="pnlDetail" runat="server" BodyStyle="padding:5px 5px 0;" Frame="true" Height="300" Title="Edit Content">
<Body>
<ext:ColumnLayout runat="server">
<ext:LayoutColumn ColumnWidth=".57">
<ext:Panel runat="server" Border="false" Header="false">
<Body>
<ext:FormLayout ID="FormLayout2" runat="server" LabelAlign="Top">
<ext:Anchor Horizontal="95%">
<ext:HtmlEditor ID="htmlEditor" runat="server" Height="200" FieldLabel="Paragrafo" EnableSourceEdit="false"></ext:HtmlEditor>
</ext:Anchor>
</ext:FormLayout>
</Body>
</ext:Panel>
</ext:LayoutColumn>
<ext:LayoutColumn ColumnWidth=".43">
<ext:Panel ID="Panel2" runat="server" Border="false" Header="false">
<Body>
<ext:FormLayout ID="FormLayout3" runat="server" LabelAlign="Top">
<ext:Anchor Horizontal="95%">
<ext:TextField ID="txtData" runat="server" FieldLabel="Data"></ext:TextField>
</ext:Anchor>
</ext:FormLayout>
</Body>
</ext:Panel>
</ext:LayoutColumn>
</ext:ColumnLayout>
</Body>
<Buttons>
<ext:Button ID="btnContentSave" runat="server" Text="Salva" Icon="Disk" >
<AjaxEvents><Click OnEvent="btnContentSave_Click" /></AjaxEvents>
</ext:Button>
<ext:Button ID="btnContentCancel" runat="server" Text="Annulla" Icon="Decline" >
<AjaxEvents><Click OnEvent="btnContentCancel_Click" /></AjaxEvents>
</ext:Button>
</Buttons>
</ext:Panel>
</South>
</ext:BorderLayout>
</Body>
</ext:ViewPort>using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using Coolite.Ext.Web;
public partial class CMSEdit : System.Web.UI.Page
{
#region Properties
public string PageID
{
set { ViewState["PageID"] = value; }
get {
}
public string PageContentID
{
set { ViewState["PageContentID"] = value; }
get { return ViewState["PageContentID"] as string ?? string.Empty; }
}
#endregion
#region Page_Load
protected void Page_Load( object sender, EventArgs e )
{
if ( !Page.IsPostBack )
{
if ( Request["id"] != null && Request["id"].Length > 0 )
{
PageID = Request["id"];
GridDataBind();
}
}
}
#endregion
#region Methods
private void GridDataBind()
{
DataStore1.DataSource
= new CContents( PageID ).GetCurrentDataTable;
DataStore1.DataBind();
}
private void ResetSouthPanel()
{
PageContentID =
htmlEditor.Text = String.Empty;
}
#endregion
#region Events
protected void btnContentCancel_Click( object sender, Coolite.Ext.Web.AjaxEventArgs e )
{
ResetSouthPanel();
}
protected void btnContentSave_Click( object sender, Coolite.Ext.Web.AjaxEventArgs e )
{
if ( !PageContentID.Equals( String.Empty ) )
{
// PageContentID is empty
CContent content = new CContent( PageContentID );
//.... some logic....
}
}
protected void RowSelected( object sender, AjaxEventArgs e )
{
PageContentID = int.Parse( e.ExtraParams["IDContent"] ).ToString();
// PageContentID is regulary set
}
#endregion
}Stefano
