Questions on UI for ASP.NET AJAX Forum

1 answer

141 views

I have got a button on the grid that when clicked sets a viewstate item to a file.
Now when i try use the response it gives me a error.
Now i have seen you can do it by

RadAjaxPanel1.ResponseScripts.Add(String.Format(@"window.location.href = ""{0}"";", http://yoursite.com/Your_File));

But how would one use this to do

response.binarywrite(byte[])

Please any help will be much appreciated. If this is in the incorrect section plese relocate.
Thanks

Grid

answered on 03 May 2010

1 answer

633 views

radalert (client side)

Hi,

I have a webpage with the following controls and javascript function

function closeWin(args)
{
radalert("Hello world", "350", "150", "alert");
}

<telerik:RadAjaxPanel ID="UpdatePanel1" runat="server">

<asp:LinkButton ID="btnOK" runat="server" OnClientClick="javascript:closeWin(0);"><span>OK</span></asp:LinkButton>
<asp:LinkButton ID="btnCancel" runat="server" href="javascript:closeWin(-1);" ><span>Cancel</span></asp:LinkButton>

</telerik:RadAjaxPanel>

given the above code, i want to display alert using radalert, how to do it, please note i dont want to use server side code for registering the javascript function

Thanks,

Ajax

answered on 03 May 2010

1 answer

70 views

"Load On Demand" not working in Q1 2010

I've implemented the Load On Demand for the RadTabStrip & RadMultiPage and followed the sample show in http://demos.telerik.com/aspnet-ajax/tabstrip/examples/applicationscenarios/loadondemand/defaultcs.aspx . My Second and Third tabs load user controls in them.

This working fine with the Q3 2009 Trial Version, but when I purchased the Q1 2010 Developer Version, this stopped working and I receive and error "Two components with the same id 'mpageMain' can't be added to the application".

Here is my ASPX

    
            <%@ Page   
        
                Language="C#"   
        
                AutoEventWireup="true"   
        
                CodeBehind="OnDemandLoad.aspx.cs"   
        
                Inherits="Telerik.OnDemandLoad" %> 
        
            <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
        
            <html xmlns="http://www.w3.org/1999/xhtml" > 
        
            <head> 
        
                <title>On Demand Load</title> 
        
            </head> 
        
            <body> 
        
                <form id="frmOnDemandLoad" runat="server">  
        
                <asp:ScriptManager ID="smgrMain" runat="server" /> 
        
                <telerik:RadTabStrip  
        
                    ID="tsMain" 
        
                    runat="server" 
        
                    Align="Left" 
        
                    SelectedIndex="0" 
        
                    MultiPageID="mpageMain" 
        
                    OnClientTabSelecting="tsMain_ClientTabSelecting" 
        
                    OnTabClick="tsMain_TabClick" > 
        
                    <Tabs> 
        
                        <telerik:RadTab Text="Alpha" PageViewID="pvAlpha" /> 
        
                        <telerik:RadTab Text="Beta" PageViewID="Beta"/>  
        
                        <telerik:RadTab Text="Gama" PageViewID="Gama"/>  
        
                    </Tabs> 
        
                </telerik:RadTabStrip> 
        
                <telerik:RadMultiPage   
        
                    ID="mpageMain"   
        
                    runat="server"   
        
                    SelectedIndex="0" 
        
                    OnPageViewCreated="mpageMain_PageViewCreated" 
        
                    ScrollBars="None" 
        
                    BorderWidth="1px">  
        
                    <telerik:RadPageView ID="pvAlpha" runat="server">Alpha</telerik:RadPageView> 
        
                </telerik:RadMultiPage> 
        
                <telerik:RadAjaxManager ID="amgrMain" runat="server">  
        
                    <AjaxSettings> 
        
                        <telerik:AjaxSetting AjaxControlID="tsMain">  
        
                            <UpdatedControls> 
        
                                <telerik:AjaxUpdatedControl ControlID="tsMain" /> 
        
                                <telerik:AjaxUpdatedControl ControlID="mpageMain" LoadingPanelID="alpDefault" /> 
        
                            </UpdatedControls> 
        
                        </telerik:AjaxSetting> 
        
                        <telerik:AjaxSetting AjaxControlID="mpageMain">  
        
                            <UpdatedControls> 
        
                                <telerik:AjaxUpdatedControl ControlID="mpageMain" LoadingPanelID="alpDefault" /> 
        
                            </UpdatedControls> 
        
                        </telerik:AjaxSetting> 
        
                    </AjaxSettings>   
        
                </telerik:RadAjaxManager> 
        
                <telerik:RadAjaxLoadingPanel ID="alpDefault" runat="server" /> 
        
                <telerik:RadScriptBlock ID="rcbMain" runat="server">  
        
                    <script language="javascript" type="text/javascript">  
        
                        function tsMain_ClientTabSelecting(sender, args)    
        
                        {    
        
                            if (args.get_tab().get_pageView())    
        
                            {    
        
                                if(args.get_tab().get_pageView().get_id())    
        
                                {    
        
                                    args.get_tab().set_postBack(false);    
        
                                }    
        
                            }    
        
                        }    
        
                    </script> 
        
                </telerik:RadScriptBlock> 
        
                </form> 
        
            </body> 
        
            </html>

And my code behind

    
                    private void AddPageView(string pageViewID)  
        
                    {  
        
                        RadPageView pageView = new RadPageView();  
        
                        pageView.ID = pageViewID;  
        
                        mpageMain.PageViews.Add(pageView);  
        
                    }  
        
                    protected void tsMain_TabClick(object sender, RadTabStripEventArgs e)  
        
                    {  
        
                        AddPageView(e.Tab.Text);  
        
                        if (e.Tab.PageView == null)  
        
                        {  
        
                            e.Tab.PageViewID = e.Tab.Text;  
        
                        }  
        
                        e.Tab.PageView.Height = Unit.Pixel(e.Tab.Index * 100); 
        
                        e.Tab.PageView.Selected = true;  
        
                    }  
        
                    protected void mpageMain_PageViewCreated(object sender, RadMultiPageEventArgs e)  
        
                    {  
        
                        // Load the User Control  
        
                        //string strUserControl = "~/UserControls/" + e.PageView.ID + ".ascx";  
        
                        //Control objControl = Page.LoadControl(strUserControl);  
        
                        //objControl.ID = e.PageView.ID + "_userControl";  
        
                        //e.PageView.Controls.Add(objControl);  
        
                    }

I can no longer use Q3 2009 as it has the Grid's OnCommand Client Event problem.

Is there anything different to be done for the Q1 2010 version?

TabStrip

answered on 03 May 2010

1 answer

241 views

Issue if Datasource for Radgrid is null

We have a control having a Radgrid. Dataset is provided to this grid from page. In some scenario, we are not able to provide dataset to the grid. In that case we are getting follwoing error:
this.ColGroup.Cols is null or not an object.
This error also occurs when there are no columns in the datasource.

In case when Datasource is null we have set it to:

wgEntityList.DataSource =

new Object[0];

But still we are facing this issue.

Also we are not able to place this control multiple times on our page because one page can not have multiple RadAjaxManagers.
Please help in this regard.

Thanks,
Sushma

Grid

answered on 03 May 2010

1 answer

162 views

radgrid columns freeze

Hi,

I want to freeze some columns from left side in the radgrid and navigate to other columns using a horizantal scroll bar , how to do it ?

i'm also using GridClientSelectColumn column in the grid

kindly provide some solution

Regards,

Ajax

answered on 03 May 2010

2 answers

163 views

Check duplicate cells across pages

Hello,

I need to check if a cell that the user is editing (cell in edit mode) does not exist in the rest of the radgrid (for the same column).
Since radgrid1.Items retrieves just the items of the current page, I tried to disable paging and filtering for a while in the validation method raised by the OnServerValidate event.
That's ok, but rebinding creates some problems for me.
Take as example that the user inserts a value duplicated.
The OnServerValidate event occurs twice in sequence (I don't know why) and the second time it is raised the cell changed by the user has the original text before editing (in fact we did a rebind!) and my validation method evaluates that everything is ok and generates no error message and no change in the DB. The expected behaviour was that the user receives a message error: "Duplicate value".

Could you help me?
Is there a way to disable paging and filtering without rebinding the grid, but just refreshing the interface?

Following is the code.

Thanks in advance.

    
                Public Sub ValidateDescriptionDuplicates(ByVal source As Object, ByVal args As ServerValidateEventArgs)  
        
                    Dim desc As String 
        
                    Dim id As String 
        
                    Dim tb As New TextBox()  
        
                    Dim hi As New System.Web.UI.HtmlControls.HtmlInputHidden()  
        
                    Dim dvt As DataView  
        
                    Dim dvr As DataRowView  
        
                    Dim err As Integer 
        
                    Dim e As DataGridItem  
        
                    Dim dgi As GridDataItem  
        
                    If Page.IsValid Then 
        
                        dgi = Me.RadGrid1.EditItems(0)  
        
                        Dim t As New Translate()  
        
                        desc = MyRadUtility.GetControlValue(dgi, "textbox")  
        
                        id = MyRadUtility.GetGridValue(dgi, "ID")  
        
                        err = 0  
        
                        RadGrid1.AllowPaging = False 
        
                        Dim filterExp As String = RadGrid1.MasterTableView.FilterExpression  
        
                        RadGrid1.AllowFilteringByColumn = False 
        
                        RadGrid1.Rebind()  
        
                        For Each dgiTemp As GridDataItem In RadGrid1.Items  
        
                            If desc = GetControlValue  
        
            dgiTemp, "label") And Not dgiTemp.GetDataKeyValue("ID") = id Then 
        
                                If Not Me.Customvalidator2 Is Nothing Then 
        
                                    Me.Customvalidator2.Text = t.TranslateString("Attention! Description already inserted!")  
        
                                End If 
        
                                err = err + 1  
        
                            End If 
        
                        Next 
        
                        RadGrid1.AllowPaging = True 
        
                        RadGrid1.AllowFilteringByColumn = True 
        
                        RadGrid1.MasterTableView.FilterExpression = filterExp  
        
                        RadGrid1.Rebind()  
        
                        If err = 0 Then 
        
                            args.IsValid = True 
        
                        Else 
        
                            args.IsValid = False 
        
                        End If 
        
                    Else 
        
                        args.IsValid = True 
        
                    End If 
        
                End Sub

Grid

answered on 03 May 2010

7 answers

176 views

[Solved] Problem: RadInputManager + EmptyMessage + Submit Button

Hi I'm using 2010Q1 library.
I'm trying to use following approach to validate input values:

    
            <asp:TextBox runat="server" ID="MessageText" TextMode="MultiLine" ValidationGroup="Contact" /> 
        
            <asp:LinkButton ID="SendBtn" ValidationGroup="Contact" runat="server" Text="Send" /> 
        
            <telerik:RadInputManager  ID="ContactRadInputManager" runat="server"> 
        
                <telerik:TextBoxSetting BehaviorID="MessageBehavior" EmptyMessage="Message" ErrorMessage="Please enter message" 
        
                                        Validation-IsRequired="true" Validation-ValidationGroup="Contact"> 
        
                    <TargetControls> 
        
                        <telerik:TargetInput ControlID="MessageText" /> 
        
                    </TargetControls> 
        
                </telerik:TextBoxSetting>     
        
            </telerik:RadInputManager>

During initial page load MessageText control shows EmptyMessage as expected. Then (don't enter text box) click SendBtn button text box. Text box shows error message as expected. After that if I focus to text box it shows EmptyMessage instead of blank field. And any uses' input is appended to EmptyMessage (see attached pics).
Please let me know what I'm doing wrong or provide some workaround if this issue.

Thank you.

Input

answered on 03 May 2010

1 answer

111 views

Radgrid_EditItem Checkboxlist

I am trying to create a checkbox list in a radgrid. I get it to populate, but the problem I am having is updating the field in the database as well as checking the values of the fields of the column in the db table to set the boxes to be checked when the edit button is clicked. Any suggestions?

Ajax

answered on 03 May 2010

1 answer

150 views

Item command fired

Hello I have a RadListBox with ItemTemplates which have image button inside, how can I pick the event when the button is clicked as I see RadListBox has no OnItemCommand event.
In my case I put custom delete button inside ItemTemplate like this

    
            <telerik:RadListBox ID="listboxAddresses" Height="158" Width="200" runat="server"> 
        
                            <ItemTemplate> 
        
                                <div class="ListBoxItem"> 
        
                                    <table width="130"> 
        
                                        <tr> 
        
                                            <td> 
        
                                                <asp:Label ID="lblCity" runat="server"></asp:Label> 
        
                                                <br /> 
        
                                                <asp:Label ID="lblAddress"  runat="server"></asp:Label> 
        
                                            </td> 
        
                                            <td align="right" width="15"> 
        
                                                <asp:ImageButton ID="btnDelete" CommandName="Delete" ImageUrl="~/Images/icons/delete.png" runat="server" /> 
        
                                            </td> 
        
                                        </tr> 
        
                                    </table> 
        
                                </div> 
        
                            </ItemTemplate> 
        
            </telerik:RadListBox>

ListBox

answered on 03 May 2010

6 answers

146 views

Telerik Radgrid showing unknown behaviour

Hi,

I am using Telerik radgrid in my application and i am unable to find out the solution for the radgrid behaviour which is shown in the attached image.

I tried to resize the grid but no luck!

I would really appreciate if someone can guide me the solution.

BTW i am using IE8. It is absolutely working fine in IE 7 and 6 versions and the telerik version is Q1 2009.

Thanks,
Shashi

Grid

answered on 03 May 2010