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Unless the folder has directory browsing enabled (which is quite unusual today), there is no way that you can check if a file exists.
You can request the file from the server and check the response that you are getting.
---
single minded; short sighted; long gone;
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Yes, that's what exactly I want to do: Request the file from the server and the check the response. My question was how to make this request and how to read the response inside asp.net.
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This depends on the protocol you will use to communicate with te remote host.
For example, in HTTP if the page you request does not exist you get a 404 response.
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Yes, I am using HTTP and I'd like to get that 404 response if the file does not exist. My question was how to make this request and how to read the response inside asp.net. In college I learnt application layer protocols and I'd just send the requests to remote server such as SMTP, HTTP and send me responses like 404, 500 or whatever. I just want to do the same thing in ASP.NET.
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Use the WebRequest object.
Here is an example, this example though uses POST to send some XML and gets the response as string.
play around with this and see what you get.
HttpWebRequest wrWebRequest = WebRequest.Create(theUrl) as HttpWebRequest;<br />
wrWebRequest.Method = "POST";<br />
wrWebRequest.ContentLength = theXml.Length;<br />
wrWebRequest.ContentType = "text/xml";<br />
<br />
StreamWriter swRequestWriter = new StreamWriter(wrWebRequest.GetRequestStream());<br />
swRequestWriter.Write(theXml);<br />
swRequestWriter.Close();<br />
<br />
HttpWebResponse hwrWebResponse = (HttpWebResponse)wrWebRequest.GetResponse();<br />
<br />
StreamReader srResponseReader = new StreamReader(hwrWebResponse.GetResponseStream());<br />
responseResult = srResponseReader.ReadToEnd();<br />
srResponseReader.Close();
Hope this helps.
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Hello World!
I developed a Web User Control self-sufficient. Now I need to include it into an old ASP page.
Is there another way that include a aspx page which uses the web user control??
Thank you very much for the cooperation
fed
fed
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Thanks for reply.
The iframe must contain an aspx page which include the user control right?
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Hello All,
Can any one help me, How can I send arabic text with URL parameter after Question Mark "?"
Ala Qunaibi
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Dear All,
I am working on WSE 2.0 and come around a situation where i need to develop a non WSE client which consumes a WSE 2.0 enabled web service.
My client is a normal aspx page where i am trying to consume the web service through javascript code(xmlhttprequest).
I have developed a SOAP message for the non wse client.
For this i extracted a "request SOAP message" to the same web service from a client which makes use of WSE 2.0.
i copied all this SOAP message as it is in to a client side variable and built the SOAP message for the non wse client.
When i send the request it gives the error that invalid username token.
Can anybody help me regarding this.
Eagerly awaiting
Ramesh.Kanjinghat
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I have a webservice which is uses WSE X.509 standard & is built using .net. Is there any toolkit that enables us to access the web service from C++ client on LINUX?
Thanks a lot!
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Hi, I have a web method that is very chatty, here is sample output from it;
<?xml version="1.0" encoding="UTF-8"?>
<soap:Envelope xmlns:tns="http://tempuri.org/" xmlns:types="http://tempuri.org/" xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<soap:Body soap:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/">
<types:MyWebMethodResponse>
<MyWebMethodResult href="#id1"/>
</types:MyWebMethodResponse>
<soapenc:Array soapenc:arrayType="types:MyType[1]" id="id1">
<Item href="#id2"/>
</soapenc:Array>
<types:MyType id="id2" xsi:type="types:MyType">
<Id xsi:type="xsd:string">someid</Id>
<Number xsi:type="xsd:string">Number 1</Number>
<Title xsi:type="xsd:string">Title</Title>
<Addr xsi:type="xsd:string">some address</Addr>
<City xsi:type="xsd:string">some city</City>
<State xsi:type="xsd:string">some state</State>
<Zip xsi:type="xsd:string">11111</Zip>
<Times href="#id3"/>
</types:MyType>
<soapenc:Array soapenc:arrayType="types:Time[256]" id="id3">
<Item href="#id5"/>
<Item href="#id6"/>
<Item href="#id7"/>
<Item href="#id8"/>
<Item href="#id9"/>
...
<Item href="#id258"/>
<Item href="#id259"/>
<Item href="#id260"/>
</soapenc:Array>
<types:Time id="id5" xsi:type="types:Time">
<StartTime xsi:type="xsd:dateTime">2007-01-29T13:18:00.0000000-08:00</StartTime>
<EndTime xsi:type="xsd:dateTime">2007-01-29T13:18:00.0000000-08:00</EndTime>
</types:Time>
<types:Time id="id260" xsi:type="types:Time">
<StartTime xsi:type="xsd:dateTime">2007-01-29T13:18:00.0000000-08:00</StartTime>
<EndTime xsi:type="xsd:dateTime">2007-01-29T13:18:00.0000000-08:00</EndTime>
</types:Time>
</soap:Body>
</soap:Envelope>
All of those <Item href...> take up a lot of space, is there a way instruct .net not generate it?
This is the declaration over the webservice C# class file;
[WebService(Namespace=Constants.NAMESPACE), ToolboxItem(false), SoapRpcService]
The web method just has plain, [WebMethod] attribute and that's it.
Thanks,
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On our webpage, we have this button:
<asp:Button ID="btnRefresh" runat="server" OnClick="btnRefresh_Click" Text="Refresh" UseSubmitBehavior="False"/>
Here's the code-behind (C#):
protected void btnRefresh_Click(object sender, EventArgs e)
{
Response.Write("<script language=\"javascript\">var confirmResponse = window.confirm('Refreshing. Continue?');</script>");
}
I want to display a confirm dialog (javascript) and have the website do something different based on whether the user clicked OK or Cancel in the confirm dialog box. How do I determine which button the user clicked in the code-behind?
"Why don't you tie a kerosene-soaked rag around your ankles so the ants won't climb up and eat your candy ass..." - Dale Earnhardt, 1997
-----
"...the staggering layers of obscenity in your statement make it a work of art on so many levels." - Jason Jystad, 10/26/2001
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But, this means your page does a postback, THEN generates the confirm dialog.
Wouldn't it be better to have the script already on the page, and confirm before postback ?
The first parameter passed to the event handler is an object, it's called sender. It's the button that was pushed, just cast it to a Control to check it's Id, etc.
Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog
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Christian Graus wrote: Wouldn't it be better
F***, I don't know - I'm a c++ programmer - I usually get to deal with REAL user interfaces instead of this 10-pounds-of-crap-stuffed-int-a-five-pound-sack-pseudo-interaction kinda idiocy...
"Why don't you tie a kerosene-soaked rag around your ankles so the ants won't climb up and eat your candy ass..." - Dale Earnhardt, 1997
-----
"...the staggering layers of obscenity in your statement make it a work of art on so many levels." - Jason Jystad, 10/26/2001
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Create an AtiveX control in c++ and use that in your html page.;P
Wout Louwers
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LOL - g'day, John. I didn't spot that it was you.
The easiest way to handle this sort of thing is to add a validator on the page, you can create a custom validator that runs your jscript, and then if the page is not valid, the validator will show, instead of the page posting back.
Oh, to answer your original question, you can't. You'll need to write javascript to show the dialog, and to respond to it. If you're just redirecting to a different page based on the response, you can do that entirely in javascript, and just use an HTML input button, set it's click event to call your method.
Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog
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John Simmons / outlaw programmer wrote: f***, I don't know - I'm a c++ programmer - I usually get to deal with REAL user interfaces instead of this 10-pounds-of-crap-stuffed-int-a-five-pound-sack-pseudo-interaction kinda idiocy...
With a "real" user interface, you mean a simple client program? I can understand that it's hard to get the hang of how things work when you move on to the more complex client-server model.
The user interface of a client program is so easy. Everything has state, is always available, and everything handles itself. You don't even have to think to program... 
---
single minded; short sighted; long gone;
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After years of writing client software, I found it tough when I started on web apps. So many questions on these forums show that a lot of people ( and I'm not suggesting John is one ) have no idea of what a web app does, in terms of client and server.
Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog
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Mate if you are a C++ programmer what are you doing with that ASP.net c***. With no offense intended to anyone using the language, it is stupid. PHP (or even a CGI script) means you can actually see what is going on. If you need a bit of help getting started I'll be happy to give you guidance, but within a few months (read days) you will be able to take full advantage of the language. Just email me if you need a hand.
(and now to cover my ass)
ASP.net is very useful if that is the language you have come into web development with. It is certainly unique and a clever way to implement a language  .
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John Simmons / outlaw programmer wrote: <asp:Button ID="btnRefresh" runat="server" removed="btnRefresh_Click" Text="Refresh" UseSubmitBehavior="False"/>
Add a client side onclick handler (server side attribute is OnClientClick, the forum changed it to 'removed'):
<asp:Button ID="btnRefresh" runat="server" removed="btnRefresh_Click" Text="Refresh" UseSubmitBehavior="False" OnClientClick="return confirm('Refreshing. Continue?');" />
If the user hits no the confirm function will return false and the button click will be cancelled client-side. Of course if your doing something important in // blah blah blah that might not work (no postback).
You might also want to look at the RegisterClientScriptBlock function rather than using Response.Write
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Hi,
I wrote an article about this.
Check it out here..
Custom Javascript Dialog
http://michaelsync.net/2007/01/01/custom-javascript-dialog/
There is one button and a datagrid in that page. If you click "Delete" button then Javascript Popup will be shown. There are two buttons "Delete" and "Cancel" on that popup. If you click "Delete" btn on popup then the records from datagrid will be deleted. you can also cancel by clicking "Cancel" button..
Hope it would help.. Let me know if you have any problem with my article.
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Hi,
I want to learn CGI programming. I just need some newbie guidance.
I am using Windows XP Professional, and have installed Apache
successfully.
Can someone please guide me regarding what else do I need to do
to get started with CGI? I've heard that any language can be used
for CGI programming. (C, C++ etc.)
I have downloaded Python and Perl. Can these be used for CGI
programming? and how can I integrate them with Apache for doing
CGI programming? I'm planning to use python, because almost everyone
has told me it's a simple language.
Some light on Apache, CGI, Python and integrating them would be
helpful.
Thanks in advance.
ASP - AJAX is SEXY. PERIOD.
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I believe that I'm not getting responses because we are supposed to discuss only Microsoft
Technologies here and not open source.
If that's the case, then I guess I'll have to ask elsewhere. 
ASP - AJAX is SEXY. PERIOD.
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