Questions on UI for ASP.NET AJAX Forum

1 answer

102 views

Folks:

I have attempted to recreate the demo here: http://demos.telerik.com/aspnet-ajax/grid/examples/data-binding/client-side/programmatic/defaultcs.aspx. I have a blank and broken grid since this web method:
public static List<Employee> GetData(int startIndex, int maximumRows,

string sortExpressions, List<GridFilterExpression> filterExpressions)

is not being called from this client script:
PageMethods.GetData(0, tableView.get_pageSize(),

tableView.get_sortExpressions().toString(), tableView.get_filterExpressions().toList(),

updateGrid);

Without this data the following client call is failing with a null error:

function RadGrid1_RowDataBound(sender, args) {

var radTextBox1 = args.get_item().findControl("LastName"); // find control

radTextBox1.set_value(args.get_dataItem()["LastName"]); fails here

}

Can anyone please explain why the server side portion is not being called or provide a better example of client side data binding.

Thanks in advance.

Mark

Documentation and Tutorials

answered on 31 Mar 2015

16 answers

302 views

RadWindow is duplicating on multiple creations

I wasn't sure the best way to describe this, but here is what I have:

I have a RadMenu with Help -> About
When I click about here is the code that is fired:

    
                    protected void aboutClick() 
        
                    { 
        
                        RadWindow windowAbout = new RadWindow(); 
        
                        // Set the window properties  
        
                        windowAbout.NavigateUrl = "~/windows/about.aspx"; 
        
                        windowAbout.ID = "RadWindowAbout"; 
        
                        windowAbout.VisibleOnPageLoad = true;  
        
                        windowAbout.Title = "About"; 
        
                        windowAbout.VisibleStatusbar = false; 
        
                        //windowAbout.Animation = WindowAnimation.FlyIn; 
        
                        windowAbout.Width = new Unit(400, UnitType.Pixel); 
        
                        windowAbout.Height = new Unit(310, UnitType.Pixel); 
        
                        //windowAbout.Modal = true; 
        
                        windowAbout.DestroyOnClose = true; 
        
                        windowAbout.Behaviors = WindowBehaviors.Close | WindowBehaviors.Move; 
        
                        RadWindowManager1.Windows.Add(windowAbout); 
        
                    }

With or without making the window modal the first time I select about everything is fine. The second time I select it I get two instances of the window, and third time I get three.

Any help is appreciated.

Window

answered on 31 Mar 2015

1 answer

136 views

Add additional values to batch edit new values

Is there a way to add additional key/values to the change data so that it will be available in the OldValues and NewValues Hashtables?

I have a grid of data that could be edited from different pages at the same time and I need to pass an additional key/value pair with the change data to track DB Concurrency issues.

// callback function
function cell_changed(sender, args) {
var row = args.get_row();
var field = args.get_columnUniqueName(); // column
var value = args.get_editorValue();

var timestamp = row.getAttribute("data-ts");

// how can I add an addition change to pass back with the newValues
cell.add_change("ts", timestamp);
}

// is this close?

var id = sender._masterCleintID;
var editor = sender.get_batchEditingManager();
var changes = editor._changes[id];
changes[{rowIndex}] = {
{field} = {
originalValue = {
"ts": timestamp
}
}
}

Grid

answered on 31 Mar 2015

1 answer

146 views

Does this only work on the client side

Is there any capabilities in this control to have the image saved on the server vs. having them saved/downloaded to the client's computer. I'm not seeing anything, but i just want to confirm.

I'd love to have a tool that lets me pass in a URL and create the image based on the rendered page and have that image saved on the server.

Thanks!
-Mark

ClientExportManager

answered on 31 Mar 2015

1 answer

138 views

Where did the RadComboBox ClientState data go?

Apparently at some point in time, when you wanted to get the selected row data from a RadComboBox from a calling form you look to the Request.Form item with the _ClientState in it's key. For example If I had this on Form1:

<telerik:RadComboBox ID="cbTabDup" runat="server" Height="100px" Width="100px" Skin="Default"

AutoPostBack="true" DropDownWidth="300px" HighlightTemplatedItems="True" MarkFirstMatch="true"

ShowDropDownOnTextboxClick="true">

<ItemTemplate>

<table cellpadding="1" cellspacing="0" class="Main" width="250px">

<tr>

<td width="100px">

<%#DataBinder.Eval(Container.DataItem, "Code")%>

</td>

<td nowrap>

<%#DataBinder.Eval(Container.DataItem, "Description")%>

</td>

<td style="display: none;">

<%# DataBinder.Eval(Container.DataItem, "ID") %>

</td>

</tr>

</table>

</ItemTemplate>

<HeaderTemplate>

<table cellpadding="1" cellspacing="0" class="Main" width="250px">

<tr>

<td class="ComboHeader" width="100px">

Code

</td>

<td class="ComboHeader">

Description

</td>

</tr>

</table>

</HeaderTemplate>

</telerik:RadComboBox>

and submitted it to Form2 using:
Response.Redirect("Form2.aspx", True)

In Form2 I could do something like this and get the values:

For Each key In Request.Form.AllKeys

If InStr(key, "cbTabDup_ClientState") > 0 Then

Dim clsRad As New clsRadComboRequest

clsRad.RadClientState = Request(key).ToString

clsRad.SetValues()

sDupText = clsRad.RadText

sDupDescText = clsRad.RadDesc

iDupInd = clsRad.RadValue

Exit For

End If

Next

Except for some unknown reason now, the Request array key containing the "cbTabDup_ClientState" is EMPTY? Where'd it go?

ComboBox

answered on 31 Mar 2015

3 answers

113 views

How do I bind only one node?

How do I bind only one node to a datatable or dataset(or sqldatasource I would like to use cache so it does not load every call as well)

<telerik:RadNavigation ID="RadNavigation1" runat="server" CssClass="siteMainMenu">

<Nodes>

<telerik:NavigationNode ID="NavigationNode1" Text="Home" runat="server" NavigateUrl="/">

</telerik:NavigationNode>

<telerik:NavigationNode ID="NavigationNode2" Text="Products" runat="server">

</telerik:NavigationNode>

<telerik:NavigationNode ID="NavigationNode3" Text="Support" runat="server">

<Nodes>

<telerik:NavigationNode Text="Tutorials"></telerik:NavigationNode>

<telerik:NavigationNode Text="Samples"></telerik:NavigationNode>

</Nodes>

</telerik:NavigationNode>

</Nodes>

</telerik:RadNavigation>

I have a dynamic list of products that I want to display as a drop down under NavigationNode2 "Products".

I suspect I would do something on nodedatabound but not sure what?

Thanks, Marty

Navigation

answered on 31 Mar 2015

1 answer

112 views

Custom tooltip content

Is there any way that we can customize the content of the tooltip functionality in the RadPivotGrid?

I essentially want to be able to customize the tooltip that appears on a row header using load-on-demand functionality to display some content that would not always be needed, and would otherwise slow down the pivot grid significantly if I always had it render with the control.

PivotGrid

answered on 31 Mar 2015

3 answers

124 views

Parent data source

Hi,

I'd like to access the parent data source from a column template. Something like this:

<telerik:GridTemplateColumn DataField="Number" HeaderText="Number">

<ItemTemplate>

<%# ((MyCollection)Parent.DataSource).MyProperty %>

</ItemTemplate>

</telerik:GridTemplateColumn>

where MyCollection represents a class I use to populate RadGrid and MyProperty is a property of this class that I'd like to access.

Is it possible to accomplish that?

Thanks,
Leszek

Grid

answered on 31 Mar 2015

1 answer

90 views

Drag and Drop grid rows

Hello rich Telerik Community,

I am into a strange problem, and couldn't find any clue that what's wrong!!

I want to use the drag and drop functionality of rad grid which is very attractive and effective for the experience of my user. The drag and drop function is working for the first item in the grid, but it doesn't work for the following items.

I am getting the error in the console window of my chrome broswer

Uncaught TypeError: Cannot read property 'attributes' of null
b._saveCellAttributes
Telerik.Web.UI.GridTableView.get_dataItems
Telerik.Web.UI.GridSelection._selectRowInternal
Telerik.Web.UI.GridSelection._click
(anonymous function)
b

I noticed that this error pops up when I click on the row. I don't know what is this. I am afraid that I will not be able to isolate the code for this problem, so it would be nice if someone can share their experience if they had this same issue. Any general idea will help me, I can give it a try.

Thanks

Grid

answered on 31 Mar 2015

2 answers

57 views

Improving your Filtering for Built-in Checkbox sample

Hello I used your documentation sample to develop a tri-state checkbox filter for boolean fields.
The problem with your sample is that every time a boolean filter is applyed (or cleared) all the other filters are reset.
Is there any way to improve your sample, so that when I clear the boolean filter, it is only removed from the current ones, without clearing all?

Grid

answered on 31 Mar 2015