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Technically, I believe it would work. However, I wouldn't advocate it as written for heavy use with large files. The drawback to my code is that the files being passed through the HttpHandler are being read into memory then dumped to the response buffer.
For your purposes, I spend a bit more time looking into securing that directory. You're not the first person to tackle this, so I'd have to imagine that sifting through Google may yield some gems.
If you were interested in experimenting a bit, you could try more of a streaming approach to the HttpHandler. You could use the same basic method, but instead of reading the entire file, use a binary reader to get a chunk of bytes, pass it to the response string, flush the response buffer, and repeat until done. That should lower the memory footprint [may also impact the speed a bit]. The disclaimer here is that I'm throwing an idea off the top of my head. I haven't tried it, but it may be worth some experimentation. If you do decide to go this route, please check in and let me know the results.
Best of luck. 
--Jesse
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Thanks Jesse, I will try it out and let you know.
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Hi
1. i have to set the RSS feed for my site..I have tried from every but not getting a proper soluion.if u have some code then plz send me.i'm using (ASP.Net 1.1 with VB).
2. my Second problem is that i have to use the mouseover event on datalist control. exactly what i'm trying to do..i have thumb images in datalist control and a image control just above it.what i want when a user mover his mouse on the thumb image there corresponding large image must be shown in Image Control.
thanx
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hi,
please anybody reply of this query that i am working on web application ASP.net,In my application user has to input there DNS in textbox then on button event i connect my application to that server whose user input the dns but problem is that this application is working fine on INTRANET it will connect to that server but problem in when i hosted on INTERNET it will give this server error as shown.Please reply ASAP :
Server Error in '/' Application.
--------------------------------------------------------------------------------
The requested name is valid, but no data of the requested type was found
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.Net.Sockets.SocketException: The requested name is valid, but no data of the requested type was found
Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
Stack Trace:
[SocketException (0x2afc): The requested name is valid, but no data of the requested type was found]
System.Net.Dns.GetHostByAddress(IPAddress address) +264
System.Net.Dns.GetHostByAddress(String address) +65
try_web.WebForm2.Button1_Click(Object sender, EventArgs e) in c:\inetpub\wwwroot\try_web\webform2.aspx.cs:81
System.Web.UI.WebControls.Button.OnClick(EventArgs e) +108
System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +57
System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +18
System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +33
System.Web.UI.Page.ProcessRequestMain() +1292
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Hi All,
i have usercontrol on that i have one radiobuttonlist control. and i am using this usercontrol in aspx page and i need to access that control in aspx page. i had written code like below
var control=document.getelementbyid("radiobuttonlist ");
but it is not taking the control into the variable.
can you please give me any idea on this how to access the web server controls value from javascript. this is urgent requirement for me. please anybody give immediate reply so that i can complete this as early.
Thanks in crore in advance
Thanks and Regards
Venkat
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Hi Venkat,
var control=document.getelementbyid("radiobuttonlist ");
U should change ur statement as follows.
var control = getElementById("radiobuttonlist_0").checked;
or
var control = document.forms[0]["radiobuttonlist_0"].checked;
try either of these
hope any one of these will help u
good luck
Regards,
Uma
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HI Uma,
Thanks alot for giving this answer. I will implement this idea and i will come up with the result. Thanks alot once again
Thanks and Regards
Venkat
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You can't access web server controls from Javascript. They only exist on the server and are used to produce the html code of the page. When the page reaches the browser, the server controls no longer exist.
Some server controls procude an html element that directly correspond to the server control. In that case you can access that element from Javascript code.
As a RadioButtonList does not correspond to a single element in the html code, there is no single element that you can access from Javascript.
---
b { font-weight: normal; }
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You'll probably find that the control is prefixed with "_ctl0_" - since it's in a usercontrol.
The simplest way to find out is to turn on Tracing at the top of the page, and make sure that the full client ID of the control is what you expect it to be - having said that, I use the MS IE Developer Toolbar - worth its weight in gold in my book!
"Now I guess I'll sit back and watch people misinterpret what I just said......"
Christian Graus At The Soapbox
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I'm writing a query for search (with Asp.net 1.1 using vb, database Mysql).
like this:-
select * from Buyercentralarticle where ArticleName Like '" & searchnum % &"'"
but its not working what's wrong in it.
thanx
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"select * from Buyercentralarticle where ArticleName Like '" & searchnum & "%'"
Try this. It may help you
Thanks and Regards
Venkat
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hi
thanx for sending me such a gud answer.
but i still need u.i hope u will help me.
1. i have to set the RSS feed for my site..I have tried from every but not getting a proper soluion.if u have some code then plz send me.i'm using (ASP.Net 1.1 with VB).
2. my Second problem is that i have to use the mouseover event on datalist control. exactly what i'm trying to do..i have thumb images in datalist control and a image control just above it.what i want when a user mover his mouse on the thumb image there corresponding large image must be shown in Image Control.
I hope u got my problem and will get positive response from ur side.
thanx
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http://www.sitepoint.com/article/rss-datalist-control-asp-net
http://www.tickermyfeed.com/
check this sites for your first problem it may help
And for your next problem
can you add onMouseOver attribute and pass one function to that and define your code in that. i think so it may help. Thanks.
Thanks and Regards
Venkat
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Is there anyone having good example for windows service to asp.net page. i want to send weekly and monthly reports but it should done automatically when system starts. Thanks.
Prya
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Not quite sure what you mean by this - a service can't talk to a web page, and vice versa - a service just sits there running all the time....
If the service is coded correctly, then it can be set to auto start with the OS, but this has nothing to do with ASP.
If you want a webform to collect data to give to a service that is scheduled to run at specific times, then you'll have to use an intermediary database, or my personal fave - MSMQ
"Now I guess I'll sit back and watch people misinterpret what I just said......"
Christian Graus At The Soapbox
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Hi all,
the main problem i m facing is that sesion terminates abnormaly
that is some time after 2 or 3 minutes session terminates and when i click to some option it takes me to login page
where as some times it remains active untill user itself not logout
i m not using asp.net profile
can any one help me
-- modified at 23:08 Friday 30th June, 2006
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Hello,
I started to work with Atlas and I use the Sys.UI.AutoCompleteBehavior.
I need to extend it and to override one of its methods.
I will appricaite if someone will tell me how to do it.
What I did is:
1 - I created a .js file with:
Type.registerNamespace('My.Sys.UI');
My.Sys.UI.MyAutoCompleteBehavior = function () {
My.Sys.UI.MyAutoCompleteBehavior.initialize(this);
}
this.initialize = function() {
My.Sys.UI.MyAutoCompleteBehavior.callBaseMethod(this,'initialize');
}
this.dispose = function() {
My.Sys.UI.MyAutoCompleteBehavior.callBaseMethod(this,'dispose');
}
My.Sys.UI.MyAutoCompleteBehavior.registerSealedClass('My.Sys.UI.MyAutoCompleteBehavior',Sys.UI.AutoCompleteBehavior);
Sys.TypeDescriptor.addType('script','MyAutoCompleteBehavior', My.Sys.UI.MyAutoCompleteBehavior);
and then instead of using:
<behaviors>
<autoComplete
.....
...../>
<behaviors>
I used:
<behaviors>
<autoComplete
.....
...../>
<behaviors>
-- modified at 19:13 Friday 30th June, 2006
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Seems you didn't say what you might want to extend, or what happens with your sample code.
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Sorry,
I want to extend the _setText method (I didn't put it in my code yet)
and I get Object doesn't support this property.
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Hi all
I am trying to calculate longitude & latitude radius GPS distance calculation
The formula is
-------------------
a = sin(lat1) * sin(lat2)
b = cos(lat1) * cos(lat2) * cos(lon2 - lon1)
c = acos(a + b)
d = R * c
How can i write this formula in asp.net (using VB)
HELP ME
asdfasdfasdfasdfasdfasdfasdfasdfasdfasdf
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Hi Everyone,
I have built a control which is a special calendar object. You can click once on a start date, then once on an end date and the range is filled in. The control works fine in it's own right, however, the page that contains the control doesn't seem to pull out the viewstate data from the control.
The viewstate is read in the control's Load event as below:
Partial Class Controls_Calendar
Inherits System.Web.UI.UserControl
Private m_MonthView As Integer
Private m_YearView As Integer
Private m_ArrivalDate As Date
Private m_DepartureDate As Date
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
If ViewState.Item("MonthView") Is Nothing Then
ViewState.Add("MonthView", Date.Now.Month)
Me.m_MonthView = Date.Now.Month
Else
Me.m_MonthView = ViewState.Item("MonthView")
End If
If ViewState.Item("YearView") Is Nothing Then
ViewState.Add("YearView", Date.Now.Year)
Me.m_YearView = Date.Now.Year
Else
Me.m_YearView = ViewState.Item("YearView")
End If
If ViewState.Item("ArrivalDate") Is Nothing Then
Me.m_ArrivalDate = Nothing
Else
Me.m_ArrivalDate = ViewState.Item("ArrivalDate")
End If
If ViewState.Item("DepartureDate") Is Nothing Then
Me.m_DepartureDate = Nothing
Else
Me.m_DepartureDate = ViewState.Item("DepartureDate")
End If
If Not Page.IsPostBack Then
RenderCalendars()
End If
End Sub
The page tries to read the viewstate info:
Partial Class Pages_BookAccommodation_BookGlasgowAccommodation
Inherits System.Web.UI.Page
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Trace.Write("Viewstate", ViewState.Item("ArrivalDate"))
If Not ViewState.Item("ArrivalDate") Is Nothing Then
Trace.Write("Viewstate", ViewState.Item("ArrivalDate"))
Me.lblFrom.Text = ViewState("ArrivalDate").ToString & " (2pm)"
End If
If Not ViewState("DepartureDate") Is Nothing Then
Me.lblTo.Text = ViewState("DepartureDate").ToString & " (10am)"
End If
End Sub
I have tried PreRender event as well to read the viewstate from the page codebehind but no success. The trace shows nothing.
Also, it might be worth mentioning that the page uses a master page???
Can any .net genius tell me where I might be going wrong?
Nelly.
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Hi there,
The ViewState in the user control is different from that in the web page, they're all different dictionaries of data. So you cannot access the ViewState of the user control from the web page, what you may do is to read the ViewState from the user control, and expose it via a public property so that you can access from the web page.
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I realised that after I posted the message. It came to me when I thought about what happens when you put 2 or more of a control on the same page.
I exposed the attributes of the control in public readonly properties. I then added the following to the page:
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Dim myCalendar As ASP.controls_calendar_ascx = FindControl("Calendar1")
Trace.Write("Arrival Date", myCalendar.ArrivalDate.ToShortDateString)
Trace.Write("Departure Date", myCalendar.DepartureDate.ToShortDateString)
End Sub
The problem seems to be the FindControl returns nothing.
The page has the control added:
<uc1:Calendar ID="Calendar1" runat="server" />
This object is contained in a panel, the panel is in a ContentPlaceHolder.
Any Ideas?
Neil.
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Basically, the FindControl method searchs for a specified control only within the scope of the current naming container. You now have a look at the your sample code again, you will see that the FindControl method in the Page_Load handler looks for the Calendar1 control in the scope of the Page instance whereas the Calendar1 is in the ContentPlaceHolder which is another naming container. So you first need to get reference to the ContentPlaceHolder control, then call its FindControl method to search for the Calendar1 in the scope of the ContentPlaceHolder. For more information, you can see Accessing ASP.NET Controls Programmatically [^]
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