Questions on UI for ASP.NET AJAX Forum

1 answer

242 views

Hi,
I am facing one issue related to RadCombobox MultiSelect Dropdown.
I want to avoid the Postback when i am not selecting any value.Currently when I have closed the Drodpdown without selecting any value my screen is getting postback.Postback should occur when i have selected any value for that i have made Autopostback=true.
But with this when i am closing the combobox without selecting any value my screen is doing postback.
How to avoid the Postback on a screen when i have not selected any value and closed the dropdown?
Please suggest what i should do?

Following is my code:

<

telerik:RadComboBox ID="ddStage" runat="server" CheckBoxes="true" OnSelectedIndexChanged="ddStage_SelectedIndexChanged"

AutoPostBack="true"

EnableCheckAllItemsCheckBox="true" Localization-CheckAllString="All"

Localization-AllItemsCheckedString="All" DropDownWidth="200px"

Width="200px" Skin="Web20Ext" Font-Names="Helvetica" Font-Italic="false" EnableEmbeddedSkins="false" BackColor="White"

ForeColor="Black">

<Items>

<telerik:RadComboBoxItem Text="Await" Selected="True" Value="1" Font-Names="Helvetica" />

<telerik:RadComboBoxItem Text="InPgr" Value="2" Font-Names="Helvetica"/>

<telerik:RadComboBoxItem Text="Rej" Value="3" Font-Names="Helvetica"/>

<telerik:RadComboBoxItem Text="Appr" Value="4" Font-Names="Helvetica"/>

</Items>

</telerik:RadComboBox>

ComboBox

answered on 25 Apr 2012

2 answers

129 views

Grouping on Complex Expressions

Hello,

In a RadGrid, I can have a column definition like the following:

<asp:BoundColumn .. DataField="County.CountyName" />

But I try this in a grid group by expression:

<tel:GridGroupByExpression DataField="County.CountyName" />

But this throws an exception. Is there a way I can utilize these complex expressions for grouping?

Thanks.

Grid

answered on 25 Apr 2012

4 answers

368 views

RadGrid Keyboard Navigation trigger Select Row on Keypress

I would just like to trigger a select on arrow up or arrow down, not just focus. This loads an image into another object.

Please help.

Thanks.

Grid

answered on 25 Apr 2012

1 answer

124 views

How can I automatically resize images when they're uploaded?

Hello,

I'm trying to automatically resize images when they're being uploaded. After reading on the forums for a while, I found out I can use a FileSystemContentProvider for this.

Here's what I've come up with:

public class TextEditor : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

radEditor.ImageManager.ContentProviderTypeName = typeof(MyResizer).AssemblyQualifiedName;

radEditor.ImageManager.ViewPaths = new[] { "~/Images" };

radEditor.ImageManager.UploadPaths = new[] { "~/Images" };

radEditor.ImageManager.DeletePaths = new[] { "~/Images" };

}

public class MyResizer : FileSystemContentProvider

{

public MyResizer(HttpContext context, string[] searchPatterns, string[] viewPaths, string[] uploadPaths, string[] deletePaths, string selectedUrl,

string selectedItemTag) : base(context, searchPatterns, viewPaths, uploadPaths, deletePaths, selectedUrl, selectedItemTag)

{

}

public override string StoreFile(Telerik.Web.UI.UploadedFile file, string path, string name, params string[] arguments)

{

string result = base.StoreFile(file, path, name, arguments);

using (System.Drawing.Image originalImage = Bitmap.FromStream(file.InputStream))

{

int originalWidth = originalImage.Width;

int originalHeight = originalImage.Height;

int newWidth = 500;

int newHeight = originalHeight / originalWidth * newWidth;

System.Drawing.Image resizedImage = ResizeImage(originalImage, newWidth, newHeight);

string fileName = Path.Combine(path, name);

resizedImage.Save(Context.Server.MapPath(fileName));

}

return result;

}

private Image ResizeImage(Image originalImage, int newWidth, int newHeight)

{

// Resize Image

}

This works fine, but as you can see the new width of the image (500) is hard coded. How can I turn this into a parameter?

We access the page with the Editor on it like this: /TextEditor.aspx?textid=1&ImageWidth=500

How can we pass the ImageWidth parameter in the querystring to our implementation of the FileSystemContentProvider?

Regards,
Kristof

Editor

answered on 25 Apr 2012

1 answer

90 views

Default Date issue for RadDateTimePicker

By default RadDateTimePicker taking Today date whenever select time from timepicker.

Expected Behavior:
Suppose today date is 23-Apr-2012.When we choose time(7:00 PM) for the first time it should selected as "XX-Apr-2012 7:00 PM" instead "23-Apr-2012 7:00 PM".

Note: 'XX' could be any date.It is purely situational.

Can it possible to change default behavior to expected date ???

Thanks,
Pradeep

Calendar

answered on 25 Apr 2012

3 answers

225 views

Force Synchronous PostBack From Within Grid

I get 5 steps forward and then hit a brick wall with the RADGrid.

I have a page with a MultiView, encapsulating two views. View1 displays View2 when a particular LinkButton is pressed. On View2, I have a RADGrid. Within it I am dynamically creating a ButtonColumn of LinkButtons. The issue is that when a LinkButton is selected from one of the rows, I need the MultiView to change back to View1. Problem is, because the LinkButton is inside the RADGrid, it execute as an Asynchronous PostBack, and even though my code changes the CurrentView of the MultiView, the change doesn't get applied. I was thinking that what I needed was to designate all the LinkButtons inside that particular column as requiring a full Synchronous PostBack when clicked.

I tried the following, but it didn't work:
Note: ButtonColumnsRequiringFullPostBack is a simple String Array holding the Unique Column Names of any columns with LinkButtons that I want to make as Synchronous Postback.

Private Sub gridMain_ItemCreated(ByVal sender As Object, ByVal e As Telerik.Web.UI.GridItemEventArgs) Handles gridMain.ItemCreated

If (e.Item.GetType() Is GetType(GridDataItem)) Then

'***************************************

' Initialize Variables

'***************************************

Dim objDataItem As Telerik.Web.UI.GridDataItem = e.Item

For Each strUniqueColumn As String In Me.ButtonColumnsRequiringFullPostBack

With Telerik.Web.UI.RadScriptManager.GetCurrent(Me.Page)

.RegisterPostBackControl(objDataItem(strUniqueColumn).Controls(0))

End With

Next

End If

End Sub

Now I don't get any error with this code...but it doesn't work either. I click the LinkButton inside the RADGrid, and it still executes Asynchronously...leaving the user on the same View2 page.

P.S. I am looking for a Server-Side solution, not a Client-Side one. Also I want to avoid wrapping the entire page in an UpdatePanel if avoidable. I think doing so may end up breaking a lot of the other functionality and I rather not spend days fixing the entire page to work AJAX style.

Any suggestions?

Grid

answered on 25 Apr 2012

3 answers

179 views

Issues with DateTimePicker control

Hi,

I am trying to build a functionality in my asp.net page where when a user changes the values of any controls on the page and then if they try to navigate away without saving their changes, it would display a pop up message. The pop up message would confirm that if they navigate away their changes will be discarded. But i am unable to do that so for the raddatetimepicker control as i cannot find a function that would fire after it's value is changed from the current value that is populated from the database? e.g. after the page loads, if datetimepicker control has a value of 23 April 2010 and then the user changes that value, i need to fire a function preferably a client side function that would set the changed value flag to one and then i can notify the user that they have unsaved changes on the page.could you please help? i have used this function "datePicker.ClientEvents.OnDateSelected = "SetUnsavedDataFlag('1');"" but it does not fire.

General Discussions

answered on 25 Apr 2012

1 answer

76 views

Accessing .NET RadComboBox from Silverlight

Hello,

I have an aspx page with a RadComboBox an a silverlight object in it :

<telerik:RadComboBox ID="cbListeTypesDonnees" runat="server" SkinID="cbMiddleComboBox" />

<div id="silverlightControlHost">

<object data="data:application/x-silverlight-2," type="application/x-silverlight-2"

width="600px" height="500px" id="moduleSL">

<param name="source" value="../../ClientBin/Genius.UI.Modules.DonneesExogenes.xap" />

<param name="onError" value="onSilverlightError" />

<param name="background" value="white" />

<param name="minRuntimeVersion" value="4.0.50401.0" />

<param name="autoUpgrade" value="true" />

<a href="http://go.microsoft.com/fwlink/?LinkID=149156&v=4.0.50401.0" style="text-decoration: none">

<img src="http://go.microsoft.com/fwlink/?LinkId=161376" alt="Get Microsoft Silverlight"

style="border-style: none" />

</a>

</object>

</div>

I want access to the RadComboBox when I am in my silverlight code :

public partial class MainPage : UserControl

{

private void _serviceClient_GetAllValeursDonneeExogeneCompleted(object sender, GetAllValeursDonneeExogeneCompletedEventArgs e)

{

if (HtmlPage.Document.GetElementById("cbListeTypesDonnees") != null)

{

}

Unfortunately, this code doesn't work, my cbListeTypesDonnees is always null.
It works when my combobox is not a telerik control.
How can I get the RadComboBox from Silverlight ?

Thank you !

ComboBox

answered on 25 Apr 2012

1 answer

56 views

Appointments time does not correspond on the schedulers slot

Hi

The start and end time does not correspond on the scheduler. For example if a meeting starts at 8:00AM and ends at 9:00 am.
On the scheduler it shows to start at 8:30 to 9:30.

Can you please assist?

Regards
Frabk

Scheduler

answered on 25 Apr 2012

1 answer

79 views

url broken link on gridview CRUD using Entity framework

Hi, trying to checkout the above but page not found. Happens to both Automatic and Manual CRUD with Entityframework. Is this still valid?

Regards
cwk

Documentation and Tutorials

answered on 25 Apr 2012