I have a dictionary of type which contains an array of objects which have two decimal property values. For clarity it looks like this:
How do I access the values of those Easting and Northing values ?
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((Coordinates)values[CoordinatesIndex].value).EastingFruchtzwerg– Fruchtzwerg2016-06-22 09:37:56 +00:00Commented Jun 22, 2016 at 9:37
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4 Answers
var coordinates =(Coordinates[])values["Coordinates"];
Console.WriteLine(coordinates[0].Easting);
Console.WriteLine(coordinates[0].Northing);
Comments
To get just two values:
var easting = values["Coordinates"][0].Easting;
var northing = values["Coordinates"][0].Northing;
Explanation: since values is a dictionary:
values["Coordinates"] - get value (i.e. array) of "Coordinates" key
values["Coordinates"][0] - get 1st item of the array of "Coordinates" key
values["Coordinates"][0].Easting - get Easting property of ...
Comments
Let values be the Dictonary and the "Coordinates" is a Key inside it. So that we can access the associated values with this key by using values["Coordinates"]. In your case the value will be a collection(Array). So To access those values you need to Specify its index or you can iterate through the collection to get it's values.
As you already said it was a Dictonary<string,Object> You need to cast the object to get the Business object. If so you can use The following snippet:
var currentEasting = (Coordinates[])(values["Coordinates"][0]).Easting;
If the collection is defined like Dictonary<string,Coordinates> then you need not to cast. Can access it directly like this:
var currentEasting = values["Coordinates"][0].Easting;
You can also iterate through those Values; this code will help you to do that:
foreach (Coordinates Co in values["Coordinates"])
{
// access each values
var someEasting = Co.Easting
}
Comments
It is a bit unclear how the dictionary is defined. If it is defined as Dictionary<string, object>, you will either have to use reflection to get data from the value, or you will have to do a hard-coded cast:
var coords = (Coordinates[])values["Coordinates"];
var firstEast = coords[0].Easting;
This will of course fail if the object is not of type Coordinates.
If the dictionary is defined as Dictionary<string, Coordinates[]>, then it is simple:
var firstEast = values["Coordinates"][0].Easting;
