Questions on UI for ASP.NET AJAX Forum

1 answer

431 views

Displaying error message on typing a invalid character

Hi,

I have a requirement like, I should accept any string which does not contain some special characters like @,*,& etc. Actually i should block the user from typing these character.
Similar behavior as the unit price text box in this example
http://demos.telerik.com/aspnet-ajax/grid/examples/dataediting/alleditablecolumns/defaultcs.aspx.

At the same time i should display some error message to the user about the blocking action. I am bit confused of acheiving this through radinputmanager and a asp text area control.

I tried setting the telerik:RegExpTextBoxSetting tag with the right regular expression, validation message and the control id, but the validation happens only on click of any button.
This is the link i used as reference http://www.telerik.com/help/aspnet-ajax/using_radinputmanager.html

Kindly help me with some code snippets.

Regards,
Saravanan K

Input

answered on 24 Jun 2010

1 answer

168 views

Too many items for Javascript to handle in a Callback

I'm using the following demo to load Combo items from a DB which I don't have linked to an Entity model (so old command query).

    
                [WebMethod(CacheDuration = 0)] 
        
                public RadComboBoxItemData[] LoadMedportalUsers(RadComboBoxContext context) { 
        
                    IDictionary<string, object> contextDictionary = (IDictionary<string, object>)context; 
        
                    string filterString = ((string)contextDictionary["FilterString"]).ToLower(); 
        
                    SqlConnection connection = new SqlConnection(ConfigurationManager.ConnectionStrings["myDB"].ConnectionString); 
        
                    SqlCommand selectCommand = new SqlCommand(@" SELECT UserID, UserName FROM Aspnet_Users
        
                                                                 WHERE LOWER(UserName) LIKE '%" + filterString + "%'", connection); 
        
                    SqlDataAdapter adapter = new SqlDataAdapter(selectCommand); 
        
                    DataTable users = new DataTable(); 
        
                    adapter.Fill(users); 
        
                    List<RadComboBoxItemData> result = new List<RadComboBoxItemData>(users.Rows.Count); 
        
                    foreach (DataRow row in users.Rows) { 
        
                        RadComboBoxItemData itemData = new RadComboBoxItemData(); 
        
                        itemData.Text = row["UserName"].ToString(); 
        
                        itemData.Value = row["UserID"].ToString(); 
        
                        result.Add(itemData); 
        
                    } 
        
                    return result.ToArray(); 
        
                }

We have about 3000 users in the AspNet_Users table...so this throws:
Error during serialization or deserialization using the JSON JavaScriptSerializer. The length of the string exceeds the value set on the maxJsonLength property.

Is there perhaps a way to tweak to allow the dynamic loading?

Any way around that?

ComboBox

answered on 24 Jun 2010

3 answers

100 views

Not able to Find a control in the itemtemplate of the listbox

Hi,

I am trying to set a controls value, based on values sent from one listbox to the other. I have set up code to find the control in the ontransferred event of the listboxes. Currently I am using the findcontrol method of listbox that the item is being sent to, then I try to find the control by the ID. When the code runs though the control is being set to a null value instead of the control in the listbox.

Thanks,
jonathan

ListBox

answered on 24 Jun 2010

1 answer

78 views

RadScriptManager Error

I'm having issues running RadScriptManager on a page that's uisng the RadGridView. If I use the regular ScriptManager I get javascript errors and the GridView does not let you select rows. If I switch to the RadGridView I get this:

Object reference not set to an instance of an object.

[NullReferenceException: Object reference not set to an instance of an object.]
   Telerik.RadMenuUtils.RadControl.GetUpdatingUpdatePanel(Control target) +101
   Telerik.RadMenuUtils.RadControl.IsInAjaxUpdatePanel(Control target) +50
   Telerik.RadMenuUtils.RadControl.Page_PreRenderComplete(Object sender, EventArgs e) +21
   System.EventHandler.Invoke(Object sender, EventArgs e) +0
   System.Web.UI.Page.OnPreRenderComplete(EventArgs e) +8698542
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1029

Ajax

answered on 24 Jun 2010

5 answers

125 views

RadTreeView DIsplay look

I have a web page using the RadTreeView and it has some data. I have a add and Edit button to edit the contents of the tree.

This all works fine with IE and firefox.

With safari, when I click the buton, the tree look changes. Instead of the + icon, I get dot icon. It all works but the look gets distorted. (the tree node changes from + to .)

TreeView

answered on 24 Jun 2010

4 answers

184 views

export to excel dont show title columns

i have a radgrid
dynamic create columns, in function to dataset returned from db, this grid show ok but when i export to excel..   dont show column titles (column headers)
i asign values for UniqueName, HeaderText, DataField etc...
i export using this code..
        gdw.ExportSettings.FileName = "MyXlsFile"
        gdw.ExportSettings.OpenInNewWindow = True
        gdw.ExportSettings.IgnorePaging = True
        gdw.ExportSettings.HideStructureColumns = True
        gdw.ExportSettings.Excel.Format = GridExcelExportFormat.Html
        gdw.MasterTableView.ExportToExcel()

whats wrong.??

Grid

answered on 24 Jun 2010

3 answers

101 views

Marked Zone Label TextBlock: Position Auto / BringToFront / MainColorOpacity

Hello

I am working on line graph and came across this issue which I could not resolve, hopefully someone can answer me on this

Referring to the attached part of my graph, i am trying to label the highest point using marked zone

However, depending on the dynamic value of my points, there will be situations where the label will be overlapped below the line

I tried:

myMarkedZone.Label.TextBlock.BringToFront(), and radChart.save() failed
myMarkedZone.Label.TextBlock.Appearance.FillStyle.MainColorOpacity = 50, and was told that this property is ReadOnly
myMarkedZone.Label.TextBlock.Appearance.Position.Auto = true, and it appears to be positioned TopLeft

Can anyone enlighten me on how to resolve this issue?

Thanks!

Chart (Obsolete)

answered on 24 Jun 2010

1 answer

99 views

Print in RadCombobox and RadDatePicker

I had a problem .When I print everything comes properly except "Select " text next to each rad combo box.The same to RadDatePicker("Auto generated "open the calendar popup" text next to RadDatePicker").
I put my screenshots attached.I hope reply as soon as possible.Thanks.
<td>
        <telerik:RadDatePicker ID="dpkDate" runat="server">
        </telerik:RadDatePicker>
</td>
<td>
<telerik:RadComboBoxID="cbxClientCode" runat="server" AutoPostBack="true" OnItemDataBound="cbxClientCode_OnItemDataBound" EnableLoadOnDemand="true" OnSelectedIndexChanged="cbxClientCode_SelectedIndexChanged" OnItemsRequested="cbxClientCode_ItemsRequested" >
  </telerik:RadComboBox>
</td>

ComboBox

answered on 24 Jun 2010

1 answer

173 views

Reference RadWindow in previous page

I have a RadWindow1 (url: Page2.aspx) that is opened from Page1.aspx. When a user clicks on a button on the RadWindow1, I want to remove the Move feature from the RadWindow1. When I try to reference RadWindow1 from Page2.aspx.vb, it returns Nothing. How can I reference RadWindow1?

I have a RadWindow1 (url: Page2.aspx) that is opened from Page1.aspx. When a user clicks on a button on the RadWindow1, I want to remove the Move feature from the RadWindow1. When I try to reference RadWindow1 from Page2.aspx.vb, it returns Nothing. Here is the code I have tried:

        'Dim window_ProductCode As RadWindow = PreviousPage.FindControl("window_ProductCode")

        '------------------

        'If PreviousPage IsNot Nothing Then
           'Dim windowMgr As RadWindow = PreviousPage.FindControl("RadWindowManager1")
           'window_ProductCode.Behaviors = WindowBehaviors.None
        'End If

       '------------------

        'Dim window_ProductCode As RadWindow = Page.Parent.FindControl("RadWindowManager1")

Window

answered on 24 Jun 2010

1 answer

99 views

[Solved] confused between

I am using telerik rad controls.. for example radGrid.. here the two different ways to use this I am seeing and confused between those..

<%@ Register Assembly="RadGrid.Net2" Namespace="Telerik.WebControls" TagPrefix="radG" %>
<RadG:RadGrid ID="RadGrid1" GridLines="None" runat="server" ></RadG:RadGrid>

OR

<%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>
<telerik:RadGrid ID="RadGrid1" GridLines="None" runat="server" > </telerik:RadGrid>

For example I know that snerious that working first one just fine but for example for this one I am trying to get this work http://demos.telerik.com/aspnet-ajax/grid/examples/dataediting/alleditablecolumns/defaultcs.aspx with using RadG it is saying for example RadNumericTextBox is not know element... If I use telerik one, that time still giving error.. so I am confused ..

General Discussions

answered on 24 Jun 2010