Re: First web service on ASP.Net - ASP.NET Discussion Boards

CodingLover29-Oct-08 20:26

29-Oct-08 20:26

Hi all,

I've start to learn web services. So I search a simple application and start work on it.

http://support.microsoft.com/kb/308359[^]

First of all I simply try to run the HelloWorld application.

It compiled fine, but when I press the F5 to run the project gives an error message saying,

Error while trying to run project; Unable to start debugging on the web server.

Can someone tell me how to fix this. I'm wired with this.

Thanks

I appreciate your help all the time...
CodingLover Smile | :)

Re: First web service on ASP.Net

John Gathogo29-Oct-08 20:42

John Gathogo

29-Oct-08 20:42

First, you need to ensure that you have <compilation debug="true"> ... </compilation> in the web.config. Secondly, if you are running VS on a Vista Operating System, do it as Administrator - Right click on the Visual Studio from Programs menu and click "Run as Administrator"

Re: First web service on ASP.Net

CodingLover29-Oct-08 20:46

CodingLover

29-Oct-08 20:46

Yes, it's set as true.

I'm working on WinXP with .Net 2003

Still not working lol. Any idea.

IIS also running.

I appreciate your help all the time...
CodingLover Smile | :)

Re: First web service on ASP.Net

surender93929-Oct-08 20:44

surender939

29-Oct-08 20:44

You can not run a web service.......

To test the web service you have to create one client application and need to refer this webservice

Happy Programming

Re: First web service on ASP.Net

CodingLover29-Oct-08 21:17

CodingLover

29-Oct-08 21:17

Can you guide me how to do it.

And I'm confusing, on this. Once I create the project I see this.

<br />
		// WEB SERVICE EXAMPLE<br />
		// The HelloWorld() example service returns the string Hello World<br />
		// To build, uncomment the following lines then save and build the project<br />
		// To test this web service, press F5<br />
<br />
//		[WebMethod]<br />
//		public string HelloWorld()<br />
//		{<br />
//			return "Hello World";<br />
//		}<br />

What that mean.

I appreciate your help all the time...
CodingLover Smile | :)

Re: First web service on ASP.Net

John Gathogo29-Oct-08 22:16

John Gathogo

29-Oct-08 22:16

Like surender939 said, a Web Service has to be consumed by a client. You should add a web (or window) project that consumes you web service. Add a project and add a web reference (to your web service). Then, you can call the HelloWorld() WebMethod. I dont know which book you might be using but I dont think an introductory web service example would be complete without a sample client.

Re: First web service on ASP.Net

CodingLover29-Oct-08 22:26

CodingLover

29-Oct-08 22:26

Actually I'm referring that MS page, link I post on my first post.

I'll try what you suggest and if I stuck, be here again. Smile | :)

I appreciate your help all the time...
CodingLover Smile | :)

Re: First web service on ASP.Net

John Gathogo29-Oct-08 22:36

John Gathogo

29-Oct-08 22:36

I had a look at the link you quoted. The console application is the client. It should work. Make sure that your console project is the start up project. Right click on the project from Solution Explorer and click "Set as Startup Project".

Re: First web service on ASP.Net

CodingLover29-Oct-08 22:42

CodingLover

29-Oct-08 22:42

Actually in my solution I have only one project, web service project. Actually I don't know, until you guys mentioned it, that a web service need a web application to start work.

I appreciate your help all the time...
CodingLover Smile | :)

Re: First web service on ASP.Net

John Gathogo29-Oct-08 22:31

John Gathogo

29-Oct-08 22:31

To give you a pointer, once you have added a Web Reference to your project, you can call the HelloWorld WebMethod, say from Page_Load, as follows:

protected void Page_Load(object sender, EventArgs e)
{
    localhost.Service1 hello = new localhost.Service1();
    lblHello.Text = hello.HelloWorld();
}

where,
localhost is your Web reference name, lblHello is a label on your web form, and Service1 is the name of your web service

Re: First web service on ASP.Net

CodingLover29-Oct-08 22:39

CodingLover

29-Oct-08 22:39

Thanks a lot. Before that I want to know one thing.

Now I have two project in my solution, a web application and a web service. How can I add a reference to the web service in the web application. And how I add your code there.

I appreciate your help all the time...
CodingLover Smile | :)

Re: First web service on ASP.Net

John Gathogo29-Oct-08 23:09

John Gathogo

29-Oct-08 23:09

Just right-click on the project (Web Application) from Solution Explorer, click on Add Web Reference. You will get a dialog box. Under a label: [Browse to:] click [Web services in this solution]. VS will discover all the web services in your solution and they will be presented in a list. Click on the one you want to use and, after giving it an appropriate web reference name add it (VS might suggest something like 'localhost'). You will then be ready to go. You can add the sample code on the Page_Load of a web form in your web application.

Re: First web service on ASP.Net

CodingLover29-Oct-08 23:19

CodingLover

29-Oct-08 23:19

Thanks lol, I'll try and let you know what happen in my side. Smile | :)

I appreciate your help all the time...
CodingLover Smile | :)

Re: First web service on ASP.Net

CodingLover29-Oct-08 23:39

CodingLover

29-Oct-08 23:39

Ok, As you said I add reference into the web application of the web service. I can build the solution fine, but I cannot run it. How can I run the web application? Please help me.

I appreciate your help all the time...
CodingLover Smile | :)

Re: First web service on ASP.Net

CodingLover29-Oct-08 23:53

CodingLover

29-Oct-08 23:53

Wow, nice work lol. I've figured what the mistake I've done.

Seems to me using the IDE, just pressing F5, cannot run the web application. I have to type the URL and run the browser. It's working fine. Is that right lol.

I appreciate your help all the time...
CodingLover Smile | :)

Bind SitemapDataSource to a Listview

neodeep200129-Oct-08 19:52

neodeep2001

29-Oct-08 19:52

I need to bind the SitemapDataSource to ListView.

And I need to show the sitemap as follows:

Home         
     node a| node aa| node aaa
           |        | node aab
           |        | node aac
    ------------------------------
           | node ab| node aba
           |        | node abb
           |        | node abc
    ------------------------------
     node b| node ba
           | node bb
           | node bc

The leaf nodes within the same parent node are contained in one table cell.

The annoying thing here is that:
Sometimes "node aa, node ab" is separate into two cells if they have child nodes.
But "node aa, node ab" will merge into one cell if they don't have child nodes.

Can anyone think of a good solution to show the data?
Should I use ListView in this case? Is there any easier way to do this?

Thanks.

Hashtable error

jaya8629-Oct-08 19:46

jaya86

29-Oct-08 19:46

i wanna use the hashtabl concept to fill the dropdownlist and use the hashtable in the selected item change event of the dropdownlist .. but wenever i refresh the page it shows the error

"Item has already been added. Key in dictionary: "10" Key being added: "10" "

and i chked the databse and i dont have the duplicate keys ... but i still get this error ..can anyonehelp wat cud be the reason and how to solve it and the code snippet is (in the page load event )

OleDbDataAdapter ada = new OleDbDataAdapter("Select * from HOSP",oledb);
DataTable Dhosp=new DataTable();
ada.Fill(Dhosp);
hHospital2.Clear();
foreach(DataRow row in Dhosp.Rows)
{

if (hHospital2.Contains(row["HOSPID"].ToString()))
{
Response.Write(row["HOSPID"].ToString());
}
else
{

hHospital2.Add(row["HOSPID"].ToString()+"~"+row["HOSPADD"],row["HOSPNAME"].ToString());

hLH.Add(row["HOSPNAME"],row["LOCATION"]);
}

}

HospId.DataSource = Dhosp;
HospId.DataMember="Hosp";
HospId.DataTextField="HOSPNAME";
HospId.DataValueField="HOSPID";
HospId.DataBind();

Re: Hashtable error

Ashfield29-Oct-08 22:17

Ashfield

29-Oct-08 22:17

I suspect its telling the truth. Have you tried running in debug and actually seeing when it goes wrong - postback perhaps?

Bob
Ashfield Consultants Ltd

Re: Hashtable error

jaya8629-Oct-08 23:39

jaya86

29-Oct-08 23:39

yeah exactly ..during the postback it gives this error ....

Re: Hashtable error

Ashfield30-Oct-08 1:52

Ashfield

30-Oct-08 1:52

Thats the problem then. Don't do the load during postback, it isn't needed.

Bob
Ashfield Consultants Ltd

Re: Hashtable error

Guffa29-Oct-08 23:48

Guffa

29-Oct-08 23:48

You are databinding the control on postback also. That means that you will re-add all the elements that the control already keeps in ViewState.

Either only databind on the initial load, or keep the control from using ViewState.

Despite everything, the person most likely to be fooling you next is yourself.

[Message Deleted]

Shivan Nandan29-Oct-08 19:35

Shivan Nandan

29-Oct-08 19:35

[Message Deleted]

Re: Active Directory

Ashfield29-Oct-08 22:18

Ashfield

29-Oct-08 22:18