Questions on UI for ASP.NET AJAX Forum

6 answers

245 views

Error: Trying to use an SPWeb object that has been closed or disposed and is no longer valid.

Hi all,

I'm evaluating RadEditor for MOSS.

When I try to use it (either as a web part or as a replacement for OOTB editor), I get "Trying to use an SPWeb object that has been closed or disposed and is no longer valid." error.

Has anybody any idea what's going on?

Luc

WebParts for SharePoint

answered on 10 Sep 2008

2 answers

545 views

RadGrid & ObjectDataSource

I'm facing an issue with databinding RadGrid to an ObjectDataSource, which admittedly I'm rather new at.

Users fill out a simple form and then click a button. This button should create a new object, and add it to a stongly-typed collection (list) of objects.

    
              protected void btnAddCustomer_Click(object sender, EventArgs e)  
        
                {  
        
                    Customers custs = (Customers)Session["Customers"];  
        
                    Customer cust = new Customer();  
        
                    cust.CustomerID = this.cbCustomerList.SelectedValue;  
        
                    custs.Add(cust);  
        
                    Session["Customers"] = custs;          
        
                    this.rgCustomers.Databind();         
        
                }

I was supposing that after the call to Databind, the RadGrid should update with the current customer record, but it doesn't. "No Records to Display" remains there perpetual. (I am using RadAjaxManager, so that the button updates the radgrid)

So what am I missing? The Add method does work. but the objectdatasource doesn't seem to be doing the job.

    
            <asp:ObjectDataSource ID="odsCustomers" runat="server"   
        
            DataObjectTypeName="EClassLibrary.Customer" InsertMethod="Add"   
        
            SelectMethod="Select" TypeName="EClassLibrary.Customers">  
        
            </asp:ObjectDataSource>

    
             public DataTable Select()  
        
                    {  
        
                        DataTable myTable = new EDataSet.dtCustomersDataTable();  
        
                        EDataSet.dtCustomersRow myRow = (EDataSet.dtCustomersRow) myTable.NewRow();  
        
                        foreach (Customer cust in this)  
        
                        {  
        
                            myRow.CustomerName = prov.GetCustomerName();  
        
                            myRow.Company = prov.GetCustomerCompany();  
        
                            myRow.JobTitle = prov.GetCustomerJobTitle();  
        
                            myRow.UserID = prov.GetProviderUserID();  
        
                            myTable.Rows.Add(myRow);                 
        
                        }  
        
                        return myTable;  
        
                    }

Someone please point out my begginer's mistake and put me out of my misery. Thanks in advance.

Grid

answered on 10 Sep 2008

1 answer

140 views

Two Way Data Binding in Multipage control

Is it possible to do 2-way databinding of controls within a multi-page control? For example, if I have a formview control within a pageview of a multipage control, can a textbox control in the formview control be bound to a database field and be updated using the native .Net 2.0 data binding?

Thanks,

Dana

TabStrip

answered on 10 Sep 2008

1 answer

129 views

RadControls and page-lifecycle

Hi,

my question is not directly related to rad controls but I dare to ask it anyway :).

How do I preserve the state of a control over multiple requests? For example:

I have two RadGrids on my page. The first shows all available objects of some type

while the other one shows the selected objects. When I click the add-button in the first

grid, an object representing this row is added to an ArrayList (server side) which is a member variable of the page object.

The second grid is bound to that ArrayList. Now, the problem is when I click on a line for the second time, the ArrayList is empty again because the page object is re-created.

So what would be the best solution to preserve this ArrayList?

Many thanks in advance for your sugestions.

Best Regards,

Robert

General Discussions

answered on 10 Sep 2008

1 answer

165 views

Menu animation and usability..

Animation can be both useful and bad when it comes to usability.. I tend to like it (besides the showoff) - but the menu animation does one thing that I don’t like: It display the first item last!

1) An option that could display the menu where the animation reveals the first item first would be very welcome. This would also eliminate the scroll "effect". Just like expanding nodes in a treeview animates.

2) Another animation type could be added: Fade (aka. opacity/transparency).. Since the animation is generic - this should be restricted to pop-ups like menu, date/time pickers, combobox etc. since it wouldn’t make much since to e.g. expanding nodes in a treeview.

Thanks

Menu

answered on 10 Sep 2008

0 answers

90 views

Delete From Grid

Hi all,

i have put delete button in grid. and set grid pagging to 5.

when i m on second page and there only one record on this page. when i delete record then no databinding means grid become blank.

how to change page index or what to do for this??

Thanks

Grid

asked on 10 Sep 2008

1 answer

119 views

Context Menu at first node.

Hi.

I've createad a context menu, and so far its ok The only problem that im facing is when the user right-clicks the first node, the context-menu only shows the last item, the others items gets behind the search bar. The context menu does not rearrange itself over the upper browsing area.

How can I resolve this?

Cheers.

TreeView

answered on 10 Sep 2008

6 answers

376 views

Setting comboBox with original value in Edit Mode

Hi,$0$0$0$0Could you please help me out to resolve the problem stated below?$0$0$0$0$0I have a RadGrid bound to dataset and I am using inPlace mode for editing purpose. For one of the column I need to have ComboBox. Now I would like to have the selected value in the ComboBox set to the original value when it goes in Edit mode.$0$0For instance - if the original value is US then US needs to be selected in the ComboBox when it is in Edit mode.$0$0$0$0$0Any suggestion would be appreciated.$0$0$0$0$0Thanks a lot.$0$0Milan G$0$0$0$0$0$0$0

Grid

answered on 10 Sep 2008

9 answers

304 views

Error Focus RadTreeView !

Hi Telerik Team !
I have the follw code :

        protected void radTreeTestCase_NodeExpand(object o, RadTreeNodeEventArgs e)
        {
            // expand node STRQ
            if (e.NodeClicked.Level == 0)
            {
                e.NodeClicked.Nodes.Clear();
                int strqID = Convert.ToInt32(e.NodeClicked.ID);
                ......
                    nodeFEAT.Image = "../Images/Level1.gif";
                    nodeFEAT.ExpandMode = ExpandMode.ServerSide;
                    e.NodeClicked.Nodes.Add(nodeFEAT);

e.NodeClicked.Focus();

}
}
.....

And then It occur Error :

Object reference not set to an instance of an object.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.

Source Error:

Line 1611:                    e.NodeClicked.Nodes.Add(nodeFEAT);

            Line 1612:                }

            Line 1613:                e.NodeClicked.Focus();

            Line 1614:            }

Source File: e:\Project EPM\EPM_site\EPM Website\EPM\ProjectInfo\pgTestCase.aspx.cs Line: 1613

Stack Trace:

[NullReferenceException: Object reference not set to an instance of an object.]

            System.Web.UI.Control.Focus() +31

            EVSOFT.EPM.Web.Project.ProjectInfo_pgTestCase.radTreeTestCase_NodeExpand(Object o, RadTreeNodeEventArgs e) in e:\Project EPM\EPM_site\EPM Website\EPM\ProjectInfo\pgTestCase.aspx.cs:1613

            Telerik.WebControls.RadTreeView.OnNodeExpand(RadTreeNodeEventArgs e) +56

            Telerik.WebControls.RadTreeView.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String s) +786

            System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +32

            System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +242

            System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3826

Version Information: Microsoft .NET Framework Version:2.0.50727.1433; ASP.NET Version:2.0.50727.1433

So I can't user method Focus to focus. So You can explain this error for me and help me solve with this problem to can focus with Control RadTreeView ?

Thank you verry much !

TreeView

answered on 10 Sep 2008

2 answers

90 views

$find problem inside a splitter

Hello,

I have encountered a problem, trying to expand a node of my treeview

I have tried in two situations

The first one, a simple "test.aspx" page with a treeview, his script manager and an onload function:

    
            function my_onload_expand() {  
        
              var m_treeview = $find("<%= TreeView1.ClientID %>");  
        
              var node = m_treeview.findNodeByText("Root");  
        
              node.expand();  
        
            }

And this is perfectly working

If i place the same page inside a splitter, everything stops working, and m_treeview is null

The body of my default.aspx with the splitter is the following

    
            <telerik:RadScriptManager ID="RadScriptManager1" runat="server">  
        
                </telerik:RadScriptManager> 
        
                    <telerik:radsplitter id="RadSplitter1" runat="server" height="100%" width="100%" Orientation="Horizontal" Skin="Default2006">  
        
                        <telerik:radpane id="panel_header" runat="server" Height="68" ContentUrl="header.aspx" MaxHeight="68" MinHeight="68"></telerik:radpane> 
        
                        <telerik:radsplitbar id="RadSplitbar1" runat="server" CollapseMode="Forward" /> 
        
                        <telerik:radpane id="contentPane" runat="server" Scrolling="None">  
        
                            <telerik:radsplitter id="RadSplitter2" runat="server" height="100%" width="100%" Skin="Default2006">  
        
                                <telerik:radpane id="panel_menu" runat="server" width="250" ContentUrl="test.aspx"></telerik:radpane> 
        
                                <telerik:radsplitbar id="RadSplitbar2" runat="server" CollapseMode="Forward" /> 
        
                                <telerik:radpane id="panel_list" runat="server" ContentUrl="list.aspx"></telerik:radpane> 
        
                            </telerik:radsplitter> 
        
                        </telerik:radpane> 
        
                    </telerik:radsplitter>

Am i doing something wrong?

TreeView

answered on 10 Sep 2008