C# (CSharp) NSObject.valueForKey Examples

Programming Language: C# (CSharp)

Class/Type: NSObject

Method/Function: valueForKey

Examples at hotexamples.com: 1

The NSObject ValueForKey method is used to retrieve the value of a property in an object using a key. This method is available in the Objective-C runtime in iOS and macOS development, and can be accessed in C# using the Xamarin.iOS and Xamarin.Mac libraries.

Example 1: Retrieving a string value from a NSDictionary object

NSDictionary dictionary = new NSDictionary("name", "John", "age", 30);
string name = (string)dictionary.ValueForKey(new NSString("name"));
Console.WriteLine(name); // Output: John

This example creates a NSDictionary object with two key-value pairs, and then retrieves the value of the "name" key using the ValueForKey method. The returned value is casted to a string and printed to the console.

Example 2: Retrieving an object value from a custom class

class Person : NSObject
{
    public string Name { get; set; }
    public int Age { get; set; }
}

Person person = new Person { Name = "John", Age = 30 };
object name = person.ValueForKey(new NSString("Name"));
Console.WriteLine(name); // Output: John

This example creates a custom class Person which inherits from NSObject, and then creates an instance of this class. The ValueForKey method is used to retrieve the value of the Name property, which is returned as an object. The returned value is then printed to the console. Package library: Xamarin.iOS and Xamarin.Mac

C# (CSharp) NSObject.valueForKey - 1 examples found. These are the top rated real world C# (CSharp) examples of NSObject.valueForKey extracted from open source projects. You can rate examples to help us improve the quality of examples.

Frequently Used Methods

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FromObject(30)

InvokeOnMainThread(30)

Call(30)

Dispose(30)

ToString(30)

GetType(23)

AllocAndInitInstance(21)

release(16)

BeginInvokeOnMainThread(15)

Equals(14)

DangerousRelease(11)

ValueForKey(11)

RespondsToSelector(9)

CancelPreviousPerformRequest(8)

ToObject(6)

PerformSelector(6)

GetOutlineViewNode(6)

GetNonNullHandle(6)

Grab(4)

IsNil(4)

InvokeInBackground(4)

retainCount(4)

DangerousRetain(4)

ConformsToProtocol(3)

ToXmlPropertyList(3)

SetValueForKeyPath(3)

AddObserver(3)

Release(2)

setValueForKey(2)

IsNewRefcountEnabled(2)

Snapshot(2)

IsKindOfClass(2)

GetHandle(2)

GetDataContext(2)

DataContext(2)

ToUnderlyingObject(2)

Wrap(2)

ValueForKeyPath(2)

description(1)

WillChangeValue(1)

Unwrap(1)

SetAssociatedObject(1)

SendMessage(1)

AddMethod(1)

RunOnUiThread(1)

GetMethodSignature(1)

Any(1)

Bind(1)

DangerousAutorelease(1)

DidChangeValue(1)

Example #1

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    // move init to application didFinishLaunchingWithOptions
    public override void Init()
    {
        Class clsU8SDK = Class.FindByName("U8SDK");

        u8SDK  = clsU8SDK.Call("sharedInstance").Cast <NSObject> ();
        u8User = u8SDK.valueForKey("defaultUser").Cast <NSObject> ();
        u8Pay  = u8SDK.valueForKey("defaultPay").Cast <NSObject> ();

        u8SDK.Call("setupWithParams:", NSMutableDictionary.dictionary());
    }