Questions on UI for ASP.NET AJAX Forum

4 answers

1.2K+ views

Hi

is possible to check the minimum size of uploaded file in radexplore?
Because when i upload a txt file empty 0 byte and try to open/download with Handler.ashx method:

    
            <%@ WebHandler Language="C#" Class="Telerik.Web.Examples.FileExplorer.FilterAndDownloadFiles.Handler" %>   
        
            using System;   
        
            using System.Data;   
        
            using System.Configuration;   
        
            using System.Web;   
        
            using System.Text;   
        
            using Telerik.Web.UI;   
        
            namespace Telerik.Web.Examples.FileExplorer.FilterAndDownloadFiles   
        
            {   
        
                [RadCompressionSettings(HttpCompression = CompressionType.None)] // Disable RadCompression for this page ;   
        
                public class Handler : IHttpHandler   
        
                { 
        
                    #region IHttpHandler Members   
        
                    private HttpContext _context;   
        
                    private HttpContext Context   
        
                    {   
        
                        get  
        
                        {   
        
                            return _context;   
        
                        }   
        
                        set  
        
                        {   
        
                            _context = value;   
        
                        }   
        
                    }   
        
                    public void ProcessRequest(HttpContext context)   
        
                    {   
        
                        Context = context;   
        
                        string filePath = context.Request.QueryString["path"];   
        
                        filePath = context.Server.MapPath(filePath);   
        
                        if (filePath == null)   
        
                        {   
        
                            return;   
        
                        }   
        
                        System.IO.StreamReader streamReader = new System.IO.StreamReader(filePath);   
        
                        System.IO.BinaryReader br = new System.IO.BinaryReader(streamReader.BaseStream);   
        
                        byte[] bytes = new byte[streamReader.BaseStream.Length];   
        
                        br.Read(bytes, 0, (int)streamReader.BaseStream.Length);   
        
                        if (bytes == null )   
        
                        {   
        
                            return;   
        
                        }   
        
                        streamReader.Close();   
        
                        br.Close();   
        
                        string extension = System.IO.Path.GetExtension(filePath);   
        
                        string fileName = System.IO.Path.GetFileName(filePath);   
        
                        if (extension == ".jpg")   
        
                        { 
        
                            WriteFile(bytes, fileName, "image/jpeg jpeg jpg jpe", context.Response);   
        
                        }   
        
                        else if (extension == ".gif")   
        
                        { 
        
                            WriteFile(bytes, fileName, "image/gif gif", context.Response);   
        
                        } 
        
                        else if (extension == ".png") 
        
                        { 
        
                            WriteFile(bytes, fileName, "image/x-png", context.Response); 
        
                        } 
        
                        else if (extension == ".tif") 
        
                        { 
        
                            WriteFile(bytes, fileName, "image/tiff", context.Response); 
        
                        }             
        
                        else if (extension == ".pdf")   
        
                        { 
        
                            WriteFile(bytes, fileName, "application/pdf", context.Response);   
        
                        }           
        
                        else if (extension == ".png") 
        
                        { 
        
                            WriteFile(bytes, fileName, "image/x-png", context.Response); 
        
                        } 
        
                        else if (extension == ".txt") 
        
                        { 
        
                            WriteFile(bytes, fileName, "text/plain", context.Response); 
        
                        } 
        
                        else if (extension == ".zip") 
        
                        { 
        
                            WriteFile(bytes, fileName, "application/zip", context.Response); 
        
                        }  
        
                    }   
        
                    /// <summary>   
        
                    /// Sends a byte array to the client   
        
                    /// </summary>   
        
                    /// <param name="content">binary file content</param>   
        
                    /// <param name="fileName">the filename to be sent to the client</param>   
        
                    /// <param name="contentType">the file content type</param>   
        
                    private void WriteFile(byte[] content, string fileName, string contentType, HttpResponse response)               
        
                    { 
        
                            response.Buffer = true; 
        
                            response.Clear(); 
        
                            response.ContentType = contentType; 
        
                            response.AddHeader("content-disposition", "attachment; filename=" + fileName); 
        
                            response.BinaryWrite(content); 
        
                            response.Flush(); 
        
                            response.End(); 
        
                    }   
        
                    public bool IsReusable   
        
                    {   
        
                        get  
        
                        {   
        
                            return false;   
        
                        }   
        
                    } 
        
                    #endregion   
        
                }   
        
            }

i receive this exeption:

Argomento specificato non compreso nell'intervallo.
Nome parametro: offset

Descrizione: Eccezione non gestita durante l'esecuzione della richiesta Web corrente. Per ulteriori informazioni sull'errore e sul suo punto di origine nel codice, vedere l'analisi dello stack.

Dettagli eccezione: System.ArgumentOutOfRangeException: Argomento specificato non compreso nell'intervallo.
Nome parametro: offset

Errore nel codice sorgente:

Riga 109:                response.AddHeader("content-disposition", "attachment; filename=" + fileName);
Riga 110:
Riga 111:                response.BinaryWrite(content);
Riga 112:                response.Flush();
Riga 113:                response.End();

File di origine: z:\Inetpub\wwwroot\MOweb\Handler.ashx Riga: 111

Thanks

Fabio

FileExplorer

answered on 09 Dec 2010

3 answers

218 views

RagGrid headers: Static headers when scrolling vertically only

Hi,

I have used UseStaticHeaders property (i.e. by setting it to "True") to ensure that grid headers don't move when one scrolls the grid upwards or downwards and users are able to tell which kind of data they are reading since the column headers are always visible and this works well.

But when I have a grid with many columns than can't fit on the screen and the horizontal scroll bar is activated, scrolling to the left or right, the headers do not move with the data columns thereby mixing up column headers as shown in the attached images.

1. grid before scrolling down.jpg: It shows the grid when "UseStaticHeaders" property is set to "true" and the grid has not been scrolled. Column headers are visible, but when one scrolls down the column headers are no longer visible as shown by "grid after scrolling down.jpg" image.

2. grid before scrolling right.jpg : It shows the grid when "UseStaticHeaders" property is set to "false" before scrolling to the right. Column headers and data columns are well aligned. But when one scrolls to the right, column headers and data are not properly aligned as shown by "grid after scrolling right.jpg " image.

How can I fix this issue such that when a user scrolls up or down, the headers always remain visible and when one scrolls to the right or left, the column headers move with their respective column headers?

Grid

answered on 09 Dec 2010

3 answers

254 views

Modal RadWindow not showing

Hi,

I have a number of RadGrid controls which edit detail records using RadWindow. This all works great until I change the Grid so that it is not paged, and the grid displays enough rows to require scrolling down through the window.

When this happens and I used the Edit link on the grid, the RadWindow opens in modal form but it is displayed somewhere off the page and so the system hangs. If I edit a record without scrolling down the window opens as expected.

I have tried modifying css with in my App_Themes\Stylesheet.css file:
.RadWindow {top: 0px!important; left: 0px!important;}

I have also tried adding the following javascript after window open:

ow.autoSize();

ow.moveTo(0, 0);

ow.Minimize();

ow.Maximize();

In all cases the window fails to appear and the page becomes locked.

I am using ther 2010 Q3 release, but this behavour also showed in previous releases. Any help appreciated.

David Penny

Window

answered on 09 Dec 2010

3 answers

229 views

Error: Sys.InvalidOperationException: '_lodIsAutomatic' is not a property or an existing field.

No idea what I'm doing wrong, but whenever I enable enableautomaticloadondemand, I get this error:

Line: 3747
Error: Sys.InvalidOperationException: '_lodIsAutomatic' is not a property or an existing field.

My code:

<telerik:RadComboBox ID="RadComboBoxProviders" Runat="server" height="200px" EnableAutomaticLoadOnDemand="true"

DataSourceID="LinqDataSourceProviders" DataTextField="Name" EmptyMessage="Select Provider" ItemsPerRequest="10" EnableVirtualScrolling="true"

DataValueField="ProviderId" Skin="Web20">

</telerik:RadComboBox>

<asp:LinqDataSource ID="LinqDataSourceProviders" runat="server" ContextTypeName="ClinicalDataContext"

EntityTypeName="" Select="new (Name, Street1, City, State, ProviderId)" TableName="ExternalProviders">

</asp:LinqDataSource>

ComboBox

answered on 09 Dec 2010

1 answer

109 views

RADDatePicker in RADGrid

Hi,

Having a weird problem with RADGrid following this example(http://demos.telerik.com/aspnet-ajax/grid/examples/dataediting/usercontroleditform/defaultcs.aspx).

when i first click on "Edit" in the RADGrid, my ascx that contains RADDatePicker to be appear normal. I am able to click on the calendar icon and the calender did pop up. Then i click "Cancel" it will return back to my grid. the second try of clicking "Edit" again to go into my ascx, i click on the calender, my RADDatePicker didnt pop up the calendar even though i click it.

Attached:
1.png: everything is normal. calendar can pop up
2.png: my datepicker become longer and calender cannot pop up when click.

Please advice.

Sharepoint Integration

answered on 09 Dec 2010

5 answers

150 views

BlackBerry Browser Issues

Has anyone used the RadCharts successfully on a BlackBerry Browser? We have asp.net dashboard applications that we would like to extend to the mobile handsets, but the RadCharts do not render on a BlackBerry Browser.

Any ideas on how to fix this? Is there a fix?

Thanks,

Terry Webster

Chart (Obsolete)

answered on 09 Dec 2010

2 answers

119 views

Can't Call OnAjaxRequest in User Control

Hi, I'm having issues executing a RadAjaxManager OnAjaxRequest. I am following the "Window / Edit dialog for Radgrid" Window option demo in order to rebind a RadListView when data is added within the Rad pop up Window. The difference between my layout and the example is I am using a master page architecture. So I have a master page then and aspx page within the content and a user control within that aspx page. My Rad Window is within the user control. Since I have my RadAjaxManager within the master page I am unable to execute a command within my user control to rebind my RadListView within that user control. How would I do this?

----- I am trying to execute the refreshGrid function below called from my RadWindow to rebind a radlist view. My problem is my radajaxmanager is within a master page and my radlistview is in a user control.

   <telerik:RadAjaxManager ID="RadAjaxManager1" runat="server" OnAjaxRequest="RadAjaxManager1_AjaxRequest">
            <AjaxSettings>
                <telerik:AjaxSetting AjaxControlID="RadAjaxManager1">
                    <UpdatedControls>
                        <telerik:AjaxUpdatedControl ControlID="RadListView1" />
                    </UpdatedControls>
                </telerik:AjaxSetting>
            </AjaxSettings>
        </telerik:RadAjaxManager>

   function refreshGrid(arg)
   {
   if (!arg)
   {
   $find("<%= RadAjaxManager1.ClientID %>").ajaxRequest("Rebind");
   }
   }

   protected void RadAjaxManager1_AjaxRequest(object sender, AjaxRequestEventArgs e)
        {
            if (e.Argument == "Rebind")
            {
                RadListView1.Rebind();

        }

Ajax

answered on 09 Dec 2010

1 answer

156 views

RadSplitButton and Styles Managing

Hi,

I need to make the selection of the RadSplitButton when RadDropDownButtonElement is selected. For make this, I'm changing Style Parameter of the different buttons and when another button is Selected I have to restore Original Values.

For make this, I've made one event:

public void SelectedChanged(object sender,EventArgs e){

RadSplitButtonElement SendingSplitButton = sender as RadSplitButtonElement;
RadSplitButtonElement[] ButtonArray = { orbit, rotate, horizontalMove, verticalMove, zoom };

for (int i = 0; i < 5; i++)
            {
                ButtonArray[i].ActionButton.ButtonFillElement.BackColor = System.Drawing.Color.transparent; <- Setting the original Values
                ButtonArray[i].ActionButton.ButtonFillElement.BackColor2 = System.Drawing.Color.transparent;
                ButtonArray[i].ActionButton.ButtonFillElement.BackColor3 = System.Drawing.Color.transparent;
                ButtonArray[i].ActionButton.ButtonFillElement.BackColor4 = System.Drawing.Color.transparent;

            }
           /*Setting Selected Values...*/
            SendingSplitButton.ActionButton.ButtonFillElement.BackColor = System.Drawing.Color.FromArgb(255,255,115,0);
            SendingSplitButton.ActionButton.ButtonFillElement.BackColor2 = System.Drawing.Color.FromArgb(255,255, 115, 0);
            SendingSplitButton.ActionButton.ButtonFillElement.BackColor3 = System.Drawing.Color.FromArgb(255,255, 115, 0);
            SendingSplitButton.ActionButton.ButtonFillElement.BackColor4 = System.Drawing.Color.FromArgb(255,255, 115, 0);
            SendingSplitButton.ActionButton.ButtonFillElement.GradientPercentage = 0.62f;
            SendingSplitButton.ActionButton.ButtonFillElement.GradientPercentage = 0.71f;
}

I have already tried changing the State of the Objects in this mode:

SendingSplitButton.OnMouseOver = true or with SendingSplitButton.OnMouseDown= true but it doesn't work. I don't understand very well if it is possible or not managing only a single state of the object through the code and how the Style Managing - by code - and Xml is merged.

Thank you very Much,

Button

answered on 09 Dec 2010

6 answers

762 views

How to disable postback or callback on RadTreeView click event

Hi, i want to disable postback or callback on RadTreeView when the user click a node, i also want with javascript function get the NavigateUrl and assign it to a iframe, all in client side without server side.

TreeView

answered on 09 Dec 2010

5 answers

223 views

RadGrid Viewstate is not loaded when hit browser's back button

Hello,
I am using RAD GRID and one column is linkable to other page. So when I hit on the link of one of the populated records of Rad Grid then it goes to next page. The problem is when I go back using BACK button of browser then Grid's data lost. I can put the data in the session like datatable and populate it again but there are other 150 controls on the same page too from which I am populating grid and some are Grid Dropdowns.
So In short I need to maintain that Controls along with RadGrid when I click on back button of browser.
Rather than storing everything in Session or viewstate, Is there any other way to do it.
Please response ASAP.
Thanks,
Deepa

Grid

answered on 09 Dec 2010

Argomento specificato non compreso nell'intervallo. Nome parametro: offset

Argomento specificato non compreso nell'intervallo.
Nome parametro: offset