Develop Reference

Yahoo Weather API by Lat and Lon

I'm writing a weather app in Xamarin.Form. I am using the Yahoo API. I have no problem getting the weather by the city name parameter. However, when I change the code to use longitude and latitude, the weather does not appear.
To download the weather I use the example from the page: https://developer.yahoo.com/weather/documentation.html#oauth-csharp
I processed it in the following way:
lSign = string.Format(
"format={0}&" +
"lat={1}&" +
"lon={2}&" +
"oauth_consumer_key={3}&" +
"oauth_nonce={4}&" +
"oauth_signature_method={5}&" +
"oauth_timestamp={6}&" +
"oauth_version={7}&" +
"u={8}",
cFormat,
szerokosc,
dlugosc,
cConsumerKey,
lNonce,
cOAuthSignMethod,
lTimes,
cOAuthVersion,
jednostka.ToString().ToLower()
(...)
url = cURL + "?lat=" + szerokosc + "&lon=" + dlugosc + "&u=" + jednostka.ToString().ToLower() + "&format=" + cFormat;

According to the documentation, lSign is used for authentication. It should not be changed, remove these "lat={1}&" + "lon={2}&" from that strings.
It says Please don't simply change value of any parameter without
re-sorting.
The location information should be involved in the request url and the authorization information is added in the header.
// Add Authorization
lClt.Headers.Add ( "Authorization", _get_auth () );
// The request URL
lURL = cURL + "?" + "lat=" + szerokosc + "&lon=" + dlugosc + "&format=" + cFormat;

Unfortunately, the simple removal of " lat = {1} & " + " lon = {2} & " from variable lSign does not solve the problem.
For example, to get weather data by the city name I use:
lSign = string.Format(
"format={0}&" +
"location={1}&" +
"oauth_consumer_key={2}&" +
"oauth_nonce={3}&" +
"oauth_signature_method={4}&" +
"oauth_timestamp={5}&" +
"oauth_version={6}&" +
"u={7}",
cFormat,
miasto,
cConsumerKey,
lNonce,
cOAuthSignMethod,
lTimes,
cOAuthVersion,
jednostka.ToString().ToLower()
and
url = cURL + "?location=" + Uri.EscapeDataString(miasto) + "&u=" + jednostka.ToString().ToLower() + "&format=" + cFormat;
and
string headerString = _get_auth();
WebClient webClient = new WebClient();
webClient.Headers[HttpRequestHeader.ContentType] = "application/" + cFormat;
webClient.Headers[HttpRequestHeader.Authorization] = headerString;
webClient.Headers.Add("X-Yahoo-App-Id", cAppID);
byte[] reponse = webClient.DownloadData(url);
string lOut = Encoding.ASCII.GetString(reponse);

Create a QR code from multiple textboxes and decode it back into the textboxes

I have created an application. This app contains the five textboxes id, name, surname, age and score.
When a user clicks the "okay button", these values are stores in an sql database.
Additionally, I want to store all of these information in an QR code. And when I decode it, the information should be shown in the textboxes respectively.
These are the references I am using so far.
using AForge.Video.DirectShow;
using Zen.Barcode;
using ZXing.QrCode;
using ZXing;
I can encode an ID number into a picture box, like so:
CodeQrBarcodeDraw qrcode = BarcodeDrawFactory.CodeQr;
pictureBox1.Image = qrcode.Draw(textBox1.Text, 50);
But I want all of the values in the textboxes to be storee in this QR code.
How can i do that?

The essence of the solution is, that you have to combine all the values from the textboxes into one string. To seperate them after decoding the QR code, you have to add a special character between the data values, that does not exist insinde the user input. After decoding the QR code, you can seperate the values by splitting the string at each occurance of the special character.
This is the quick and dirty way of doing that. If you want the QR code to be conformant to any specific format (like vcard), you have to reserach what it takes to compose the data for this format.
I expect your users cannot enter more than one line into the textboxes, so the newline character can be used as seperator character.
Encode all the information into one QR code.
var qrText = textBox1.Text + "\n" +
textBox2.Text + "\n" +
textBox3.Text + "\n" +
textBox4.Text + "\n" +
textBox5.Text;
pictureBox1.Image = qrcode.Draw(qrText, 50);
You can decode the QR code and assigning the data to the different textboxes again.
var bitmap = new Bitmap(pictureBox1.Image);
var lumianceSsource = new BitmapLuminanceSource(bitmap);
var binBitmap = new BinaryBitmap(new HybridBinarizer(source));
var reader = new MultiFormatReader();
Result result = null;
try
{
result = reader.Decode(binBitmap);
}
catch (Exception err)
{
// Handle the exceptions, in a way that fits to your application.
}
var resultDataArray = result.Text.Split(new char[] {'\n'});
// Only if there were 5 linebreaks to split the result string, it was a valid QR code.
if (resultDataArray.length == 5)
{
textBox1.Text = resultDataArray[0];
textBox2.Text = resultDataArray[1];
textBox3.Text = resultDataArray[2];
textBox4.Text = resultDataArray[3];
textBox5.Text = resultDataArray[4];
}

You can get this done by implementing below code :
"{" + '"' + "name" + '"' + ":" + '"' + txtName.Text + '"' + "," + '"' + "lname" + '"' + ":" + '"' + txtLname.Text + '"' + "," + '"' + "Roll" + '"' + ":" + '"' + txtRoll.Text + '"' + '"' + "class" + '"' + ":" + '"' + txtClass.Text + '"' + "}"
Result will be:
{"name":"Diljit","lname":"Dosanjh","Roll","2071","class":"BCA"}
Such that your QR scanner will recognize the data belong to its specific filed.

Azure WindowsPushMessage Xml Payload Format

On my Azure Mobile Service, I am sending a Push Notification to a Windows Phone 8.1 with the following code:
WindowsPushMessage message = new WindowsPushMessage();
message.XmlPayload = #"<?xml version=""1.0"" encoding=""utf-8""?>" +
#"<toast><visual><binding template=""ToastText01"">" +
#"<text id=""1"">" + pushString + #"</text>" +
#"</binding></visual></toast>";
try
{
var result = await Services.Push.SendAsync(message);
Services.Log.Info(pushString);
}
catch (System.Exception ex)
{
Services.Log.Error(ex.Message, null, "Push.SendAsync Error");
}
I want to change the format of the Notification, Though, and all I can seem to find are these formats:
WindowsPushMessage message = new WindowsPushMessage();
message.XmlPayload = "<?xml version=\"1.0\" encoding=\"utf-8\"?>" +
"<wp:Notification xmlns:wp=\"WPNotification\">" +
"<wp:Toast>" +
"<wp:Text1>Yo Dawg</wp:Text1>" +
"</wp:Toast> " +
"</wp:Notification>";
WindowsPushMessage message = new WindowsPushMessage();
message.XmlPayload ="<wp:Notification xmlns:wp=\"WPNotification\">" +
"<wp:Toast>" +
"<wp:Text1>" + TextBoxTitle.Text.ToString() + "</wp:Text1>" +
"<wp:Text2>" + TextBoxSubTitle.Text.ToString() + "</wp:Text2>" +
"<wp:Param>/Page2.xaml?NavigatedFrom=Toast Notification</wp:Param>" +
"</wp:Toast> " +
"</wp:Notification>";
But these formats do not work correctly with WindowsPushMessage payload. I receive this error for either one of the them:
The payload is not in accepted XML format. The first node should be Badge/Tile/Toast. If want to send raw notification, please set header to wns/raw.
Can anyone tell me what the correct format would be?

Something like the following:
message.XmlPayload = #"<?xml version=""1.0"" encoding=""utf-8""?>" +
#"<toast><visual><binding template=""ToastNewPayload"">" +
#"<text id=""1"">" + TextBoxTitle.Text.ToString()+ #"</text>" +
#"<text id=""2"">" + TextBoxSubTitle.Text.ToString() + #"</text>" +
#"<text id=""3"">/Page2.xaml?NavigatedFrom=Toast Notification</text>" +
#"</binding></visual></toast>";
See the following doc: https://azure.microsoft.com/en-us/documentation/articles/notification-hubs-templates/

Keep getting "Invalid Content-Range" response from AWS Glacier Multipart Upload

I can't figure out why I keep getting an invalid Content-Range from AWS Glacier. It looks to me like my format follows RFC 2616 but I keep getting an error. Help?
Here's the code:
using (var FileStream = new System.IO.FileStream(ARCHIVE_FILE, FileMode.Open))
{
while (FileStream.Position < FileInfo.Length)
{
string Range = "Content-Range:bytes " + FileStream.Position.ToString() + "-" + (FileStream.Position + Size - 1).ToString() + "/*";
var request = new Amazon.Glacier.Model.UploadMultipartPartRequest()
{
AccountId = "-",
VaultName = VAULT_NAME,
Body = Amazon.Glacier.GlacierUtils.CreatePartStream(FileStream, Size),
UploadId = UploadId,
Range = Range,
StreamTransferProgress = Progress
};
//request.SetRange(FileStream.Position, FileStream.Position + Size - 1);
response = GlacierClient.UploadMultipartPart(request);
}
}

Apparently I misinterpreted the Intellisense description:
//
// Summary:
// Identifies the range of bytes in the assembled archive that will be uploaded
// in this part. Amazon Glacier uses this information to assemble the archive
// in the proper sequence. The format of this header follows RFC 2616. An example
// header is Content-Range:bytes 0-4194303/*.
You're not supposed to include the name of the header itself so this line:
string Range = "Content-Range:bytes " + FileStream.Position.ToString() + "-" + (FileStream.Position + Size - 1).ToString() + "/*";
Should be:
string Range = "bytes " + FileStream.Position.ToString() + "-" + (FileStream.Position + Size - 1).ToString() + "/*";
Derp.

Code for Google Analytic product hit in c#

I'm new in google analytic. I go through some regarding this. I found that there is no direct method to hit a windows application in google analytic. But i found some solutions in stackoverflow. I tried that, but didn't work for me. Below is the code that I'm using.
private void analyticsmethod4(string trackingId, string pagename)
{
Random rnd = new Random();
long timestampFirstRun, timestampLastRun, timestampCurrentRun, numberOfRuns;
// Get the first run time
timestampFirstRun = DateTime.Now.Ticks;
timestampLastRun = DateTime.Now.Ticks - 5;
timestampCurrentRun = 45;
numberOfRuns = 2;
// Some values we need
string domainHash = "123456789"; // This can be calcualted for your domain online
int uniqueVisitorId = rnd.Next(100000000, 999999999); // Random
string source = "Shop";
string medium = "medium123";
string sessionNumber = "1";
string campaignNumber = "1";
string culture = Thread.CurrentThread.CurrentCulture.Name;
string screenRes = Screen.PrimaryScreen.Bounds.Width + "x" + Screen.PrimaryScreen.Bounds.Height;
string statsRequest = "http://www.google-analytics.com/__utm.gif" +
"?utmwv=4.6.5" +
"&utmn=" + rnd.Next(100000000, 999999999) +
// "&utmhn=hostname.mydomain.com" +
"&utmcs=-" +
"&utmsr=" + screenRes +
"&utmsc=-" +
"&utmul=" + culture +
"&utmje=-" +
"&utmfl=-" +
"&utmdt=" + pagename + // Here i passed my profile name "MyWindowsApp"
"&utmhid=1943799692" +
"&utmr=0" +
"&utmp=" + pagename +
"&utmac=" + trackingId + //Tracking id : ie "UA-XXXXXXXX-X"
"&utmcc=" +
"__utma%3D" + domainHash + "." + uniqueVisitorId + "." + timestampFirstRun + "." + timestampLastRun + "." + timestampCurrentRun + "." + numberOfRuns +
"%3B%2B__utmz%3D" + domainHash + "." + timestampCurrentRun + "." + sessionNumber + "." + campaignNumber + ".utmcsr%3D" + source + "%7Cutmccn%3D(" + medium + ")%7Cutmcmd%3D" + medium + "%7Cutmcct%3D%2Fd31AaOM%3B";
try
{
using (var client = new WebClient())
{
//byte[] bt = client.DownloadData(statsRequest);
Stream data = client.OpenRead(statsRequest);
StreamReader reader = new StreamReader(data);
string s = reader.ReadToEnd();
MessageBox.Show(s);
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
This example is also got from this site itself. I don't know where was the problem. Please direct me, how can i make it. This is the output i'm getting "GIF89a".
Thanks
Bobbin Paulose

So it's working. The Google Analytics call loads a tiny GIF image, and the querystring parameters provided in the request trigger all the Google Analytics goodness. If you're getting a response back, you have registered your event successfully with Google.