Comments by Henry Hunt (Top 48 by date)

I have not posted any code for the service, only the host console that uses it. This is the code for the client which is also a console:

static void Main(string[] args)
{
CalculatorClient client = new CalculatorClient();

Console.WriteLine(client.Endpoint.Address);
Console.WriteLine(client.State);
Console.WriteLine(client.Endpoint.Name);
Console.WriteLine(client.Endpoint.ListenUri);


Console.WriteLine(client.Login("password"));
Console.WriteLine(client.Login("hello"));

double value1 = 100.00D;
double value2 = 15.99D;
double result = client.Add(value1, value2);
Console.WriteLine("Add({0},{1}) = {2}", value1, value2, result);

value1 = 145.00D;
value2 = 76.54D;
result = client.Subtract(value1, value2);
Console.WriteLine("Subtract({0},{1}) = {2}", value1, value2, result);

value1 = 9.00D;
value2 = 81.25D;
result = client.Multiply(value1, value2);
Console.WriteLine("Multiply({0},{1}) = {2}", value1, value2, result);

value1 = 22.00D;
value2 = 7.00D;
result = client.Divide(value1, value2);
Console.WriteLine("Divide({0},{1}) = {2}", value1, value2, result);

client.Close();
Console.ReadKey();
}


Right, all I basically want is to have a computer. This computer will be downloading data from the internet and saving it (that part has nothing to do with WCF) and it will also run the server software. There will be lots of people on separate computers with a piece of software that will use the service to send a code back to the server. The server will then read that code and select the relevant piece of data (which it downloaded previously) to send back to the client (whether it be an image file or just a value). It is simple and I have it working absolutely perfectly with the client and server on the same machine, it sends the data back just like I want but the error occurs whenever I try to run the client on another machine from the server and I assumed it is a problem with how I have configured both the server and client.

That is the bit I can never do with any success! How would I change this endpoint address to make it work on another machine: http://localhost:8000/SystemControllers/Administrator

Do I just have to change 'localhost:8000' to the IP address of the machine that is running the client? I don't understand this part.

Oh, so all I have to do is change the endpoint URLs so that they are not localhosts and make sure all clients use the same URL as the host?

Great, worked perfectly! Thank you.

Ah I get you, yes it may be useful. All I really want is a list of URLs to all of the pages belonging to a website/server/domain

Sorry, what do you mean by that?

I've got it, it works now. I had to do DataContext = this and a few other things when updating the listview so there are now no references to the listview control itself. Thank you!

Does the XAML affect how the list reloads? Because I am still getting a NullReferenceException. I have pasted your C# code as it is without changing anything and am using this to control the items in it:

timeSteps.ItemsSource = null;
TimeStepDataCollection.Clear();

XmlDocument capabilities = new XmlDocument();
List<timestep> timesteps = new List<timestep>();
List<string> timeList = new List<string>();
List<timestep> reloading = new List<timestep>();

capabilities.Load(Data.MetOffice.DownloadXml(
"http://datapoint.metoffice.gov.uk/public/data/layer/wxobs/all/xml/capabilities?key=" +
UserProfile.Read.ApiKey(), DateTime.Now.Second.ToString()));

for (int x = 0; x < capabilities.SelectNodes("//Layer[@displayName='Rainfall']/Service/Times/Time").Count; x++)
{
timeList.Add(capabilities.SelectNodes("//Layer[@displayName='Rainfall']/Service/Times/Time")[x].InnerText);
}

foreach (string s in timeList)
{
TimeStepDataCollection.Add(new TimeStepData() {
TimeStepItem1 = (DateTime.Parse(s.Remove(10).Replace("-", "/")).ToString("dd/MM/yyyy") +
" at " + s.Remove(0, 11).Remove(5)) + ":00", TimeStepItem2 = s });
}
new Global().UpdateDataTree(set: "Observation Maps", entry: "Rainfall Rate",
step: timeList.ToArray(), type: "Observation", freq: "15 Minutes", dist:
"Met Office", serv: "OBSERVATION", unit: "mm/h (millimetres per hour)", key: "true");

timeSteps.ItemsSource = TimeStepDataCollection;

Maybe I am doing it wrong?

How would I implement the observable collection? I have looked on the internet for observable collections and listviews but cannot get anything to work

This works, thank you but where would I write my main code to do things like actually download the data? I'm a bit confused as to which classes do what

THAT'S IT!! That's what I want, like a list<>

Ahhh I get it now... So I should just change the event args in the method to something like MouseEventArgs and add it as a handler to the ListView?

But that's the problem...I don't know how to use the method from that post: I mean you can't exactly go statusLabel.Content = new GlobalClasses().UpdateStatus(*** This is the bit I don't get. what do I do with this bit: DragEventArgs?***) or can you? That is what I want to know. I have never come across 'functions' with events in them apart from the obvious event handlers for controls but I wouldn't class that as a 'function' that I have written.

OK...I have found this code below:
private ListViewItem FindListViewItem(DragEventArgs e)
{
var visualHitTest = VisualTreeHelper.HitTest(dataTree, e.GetPosition(dataTree)).VisualHit;
ListViewItem listViewItem = null;
while (visualHitTest != null)
{
if (visualHitTest is ListViewItem)
{
listViewItem = visualHitTest as ListViewItem;
break;
}
else if (visualHitTest == dataTree)
{
MessageBox.Show("Found ListView instance");
return null;
}
visualHitTest = VisualTreeHelper.GetParent(visualHitTest);
}
return listViewItem;
}
...but I don't know how to use/call it because of the event in the parameters. Do I haver to attach it to an event in my ListView to use it or what? It was from here: http://stackoverflow.com/questions/12977046/finding-out-which-item-the-mouse-is-over-in-a-list-view-while-using-itemssource

But it doesn't work like that for a ListView item. Don't you have to determine the current pointer location and then get the item under it or something? That is the part I cannot do.

Ok thank you, I will have another go at writing it...one thing though: would this be a DateTime or an int?: nextExpected = time() + updateRate, and is time() just the current time?

As you said this code does work but it limits me to what I can do as I cannot use this code with the 'System.Windows' and 'System.Drawing' namespaces both referenced as I get the ambiguity error between the point definition, that was why I needed a 'conversion'

Yes, from a url and save it to the disk

Perfect! Thank you

Thank you, I have accepted it. Just out of interest, would you say that WCF is the right way to go to match login details with a database on another computer when someone logs in or is there a better way?

ah ok...What I am trying to do is when someone signs in or fills in details to request an account it encrypts the entered data and sends it using WCF to another computer containing a database of accounts which it then decrypts the sent data and cross matches it with the database to get a correct login and then sends a message back saying it can log in. Just to make sure you know what context I want to use the encryption in. Another thing: I am amazed at how much knowledge you have about not just C# but lots of other languages and computers and encryption and a lot about everything to do with computer programming. Where and how have you got it all from?!

By huge I mean hundreds or thousands of characters and the purpose is that the number is a sequence of characters from encryption I have made where it converts inputted characters to their ascii codes and does some other stuff with it to make it 'secure'. I know it sounds like a crazy idea and that it could be cracked maybe quite easily but still...

Thank you I will have a go at that. It is annoying because I don't actually need the number to do any maths on, I only need it to stand in as a very, very long sequence of numbers.

In both errors, it is when I load the XmlDocument capabilities with either a local file or a file on the web. So it is when I request it I suppose.

Loading a file from the web: Request for the permission of type 'System.Net.WebPermission, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.

Loading a local file: Request for the permission of type 'System.Security.Permissions.FileIOPermission, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.

Nope same error when I save it to the disk and use that instead. Is it something to do with the security rights of the application or code? But this time it is a request for a FileIOPermission not a web one I just noticed.

Thank you for this, it helped but the code with the error is always in the automatically generated code by the designer to store all of the properties for the controls I have on the form and not code that I have written so I really don't know how to solve it.

Yes, completely fine. Then I saved and closed and turned off my computer. Had my day and come back to find it starts to throw errors

- I can't see any memory usage problems and I don't have much open

Microsoft Visual Studio 2010
Version 10.0.40219.1 SP1Rel
Microsoft .NET Framework
Version 4.5.50709 SP1Rel
Installed Version: C# Express
- Windows 8 64bit

Hello again, I have just one more thing for you. How would I reference to a specific 'set' of elements depending on on of the containing element values instead of the attribute at the top of the 'set' of elements. For example: The code I want to read is below. How would I get the Risk level from specifying the Area element?

How would I get the risk level for the Area value of East Highland? I don't want to use indexing, ie: using SelectNodes("")[n].innerText as the 'sets' of MountainForecast elements could be in a different order Thank you.


mountainforecastlist
mountainforecast
datadate/2013-09-08T04:04:39Z/datadate
validfrom/2013-09-08T04:00:00Z/validfrom
validto/2013-09-12T04:00:00Z/validto
createddate/2013-09-08T03:05:48Z/createddate
uri/http://datapoint.metoffice.gov.uk/public/data/txt/wxfcs/mountainarea/{format}/100?key={key}/uri
Area/Brecon Beacons/Area
risk/Medium/risk
mountainforecast
mountainforecast
datadate/2013-09-08T03:26:42Z/datadate
validfrom/2013-09-08T03:00:00Z/validfrom
validto/2013-09-12T03:00:00Z/validto
createddate/2013-09-08T02:26:48Z/createddate
uri/http://datapoint.metoffice.gov.uk/public/data/txt/wxfcs/mountainarea/{format}/101?key={key}/uri
Area/East Highland/Area
risk/Medium/risk
mountainforecast
mountainforecastlist

Had to remove the tag start and ends so hope you can read it, I put / between element and its value.

Thank you, that worked.

Thank you...I now have this code but there is a problem:

int minutes = Convert.ToInt16(DateTime.Parse("2013-09-05T14:00:00").ToString("mm"));
int hours = Convert.ToInt16(DateTime.Parse("2013-09-05T14:00:00").ToString("HH"));

TimeSpan mySpan = new TimeSpan(minutes, hours, 0);

int totalSecondsSinceMidnight = Convert.ToInt32(mySpan.TotalMinutes);
MessageBox.Show(totalSecondsSinceMidnight.ToString());

It returns 14 and there surely aren't 14 minutes since midnight are there? Could you work out why this is? Thank you.

Does this work with attributes in the same way?

But surely if I have 24 individual labels and I want each one to contain a different value from a different attribute from the same document and I don't want to use any type of list controls then that is how to do it? I can't think of any other way to populate different labels with different values other than one by one.

I think I jump to asking for help after not trying for long enough myself! Solved it myself with this code:

static void Main(string[] args)
{
XmlDocument SiteList = new XmlDocument();
SiteList.Load("C:/Users/Henry/WeatherWatcher/Development/sitelist.xml");
List<string> FinalList = new List<string>();
for (int x = 0; x < SiteList.SelectNodes("/Locations/Location/@id").Count; x++)
{
for (x = 0; x < SiteList.SelectNodes("/Locations/Location/@latitude").Count; x++)
{
for (x = 0; x < SiteList.SelectNodes("/Locations/Location/@longitude").Count; x++)
{
Console.ForegroundColor = ConsoleColor.White;
Console.WriteLine("ID: " + SiteList.SelectNodes("Locations/Location/@id")[x].InnerText);
Console.WriteLine("LA: " + SiteList.SelectNodes("/Locations/Location/@latitude")[x].InnerText);
Console.WriteLine("LO: " + SiteList.SelectNodes("/Locations/Location/@longitude")[x].InnerText);
Console.WriteLine("HF: " + Haversine.Formula(Convert.ToDouble(Properties.Settings.Default.LATITUDE), Convert.ToDouble(Properties.Settings.Default.LONGITUDE), Convert.ToDouble(SiteList.SelectNodes("/Locations/Location/@latitude")[x].InnerText), Convert.ToDouble(SiteList.SelectNodes("/Locations/Location/@longitude")[x].InnerText)));
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine("AL: " + Haversine.Formula(Convert.ToDouble(Properties.Settings.Default.LATITUDE), Convert.ToDouble(Properties.Settings.Default.LONGITUDE), Convert.ToDouble(SiteList.SelectNodes("/Locations/Location/@latitude")[x].InnerText), Convert.ToDouble(SiteList.SelectNodes("/Locations/Location/@longitude")[x].InnerText)) + "---" + SiteList.SelectNodes("/Locations/Location/@id")[x].InnerText);
FinalList.Add(Convert.ToString(Haversine.Formula(Convert.ToDouble(Properties.Settings.Default.LATITUDE), Convert.ToDouble(Properties.Settings.Default.LONGITUDE), Convert.ToDouble(SiteList.SelectNodes("/Locations/Location/@latitude")[x].InnerText), Convert.ToDouble(SiteList.SelectNodes("/Locations/Location/@longitude")[x].InnerText)) + "---" + SiteList.SelectNodes("/Locations/Location/@id")[x].InnerText));
Console.WriteLine(Environment.NewLine);
}
}
}
foreach (object o in FinalList)
{
Console.WriteLine(o);
}
Console.ReadKey();
}

Doesn't work because the y loop follows on from the x loop. After getting the longs using x it then gets the lats with y using x to tell it to count up the same amount as it did to get the longs if that makes any sense.

I have just solved it myself with

Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
if (Properties.Settings.Default.FirstRun == true)
{
APIKey APIKey = new APIKey();
Application.Run(APIKey);
}
else
{
MAIN_WeatherWatcher MAIN_WeatherWatcher = new MAIN_WeatherWatcher();
Application.Run(MAIN_WeatherWatcher);
}

I've tried doing 'Application.Run()' and then doing an if statement to check of the setting is true or false and telling it to show the first form if it is true and the second if it is false but that didn't work.

Oh I mean open or show it

Another thing, how would I read an attribute and put it into a string for use in a URL? For example, how would I read the attribute value for 'displayName' in the SatelliteVis layer and store it in a string? Thanks.

Thank you so much, it worked great after a few changes. One more thing, it returns the whole element (e.g: 'time 2013-08-06T15:00:00 /time' is there a way to just get the data inside the tags or would I just use replace to replace the 2 tags either side of the data with an empty space?