C#

JSON: Access Array Values

See more JSON Examples

Demonstrates how to access values in a JSON array. C#

bool success = false;

Chilkat.JsonObject json = new Chilkat.JsonObject();

string jsonStr = "{ \"id\": 1, \"name\": \"A green door\", \"tags\": [\"home\", 22, \"green\"], \"price\": 125 }";

success = json.Load(jsonStr);
if (success != true) {
    Debug.WriteLine(json.LastErrorText);
    return;
}

// Get the "tags" array, which contains "home", 22, "green"
Chilkat.JsonArray tagsArray = json.ArrayOf("tags");
if (json.LastMethodSuccess == false) {
    Debug.WriteLine("tags member not found.");
    return;
}

// Get the value at each array index. 
// Output will be:
// [0] = home
// [0] as integer = 0
// [1] = 22
// [1] as integer = 22
// [2] = green
// [2] as integer = 0

int arraySize = tagsArray.Size;
int i;
for (i = 0; i <= arraySize - 1; i++) {

    string sValue = tagsArray.StringAt(i);

    Debug.WriteLine("[" + Convert.ToString(i) + "] = " + sValue);

    int iValue = tagsArray.IntAt(i);
    Debug.WriteLine("[" + Convert.ToString(i) + "] as integer = " + Convert.ToString(iValue));

}

// Note: The StringAt method returns the value as a string regardless of the type.

// The IntAt method returns the value as an integer.  If the value does not convert to 
// an integer, then 0 is returned