I have spent the best part of two days “faffing” about with code samples and etc., trying to read a very large JSON file into an array in c# so I can later split it up into a 2d array for processing.
The problem I was having was I could not find any examples of people doing what I was trying to do. This meant I was just editing code a little an hoping for the best.
I have managed to get something working that will:
- Read the file Miss out headers and only read values into array.
- Place a certain amount of values on each line of an array. (So I could later split it an put into 2d array)
This was done with the code below but it crashes the program after entering a few lines into the array. This might have to do with the file size.
// If the file extension was a jave file the following // load method will be use else it will move on to the // next else if statement if (fileExtension == ".json") { int count = 0; int count2 = 0; int inOrOut = 0; int nRecords=1; JsonTextReader reader = new JsonTextReader(new StreamReader(txtLoaction.Text)); string[] rawData = new string[5]; while (reader.Read()) { if (reader.Value != null) if (inOrOut == 1) { if (count == 6) { nRecords++; Array.Resize(ref rawData, nRecords); //textBox1.Text += "\r\n"; count = 0; } rawData[count2] += reader.Value + ","; //+"\r\n" inOrOut = 0; count++; if (count2 == 500) { MessageBox.Show(rawData[499]); } } else { inOrOut = 1; } } }
A snippet of the JSON I am working with is:
[ { "millis": "1000", "stamp": "1273010254", "datetime": "2010/5/4 21:57:34", "light": "333", "temp": "78.32", "vcc": "3.54" }, ]
I need the values out of this JSON. For example, I need “3.54”, but I would not want it to print the “vcc”.
I am hoping someone can show me how to read a JSON file in and only extract the data that I need and put it into an array or something that I can use to later put into an array.