access data from one class to other c#

Question

I have a class which talks to a wcf

public class Network { private const string PROXY_HOSTNAME_PARAM = "ProxyHostname"; public string GetMyNetwork() { MyProxy myprox = MyProxy.Instance; string network = string.Empty; network = myprox .GetNetworkConfig(); return network; }

Now i have another class where I create object of the class Network and invoke GetMyNetwork() to get network. When i do this it hits wcf again and gives me the string. I want to avoid that.I want it to cache the network string once and for all and whenever i hit this method i should get the data without hitting wcf again. how can i achieve this ?

You could use cache, static variable, save to db, save to file, etc. — GôTô
– GôTô, Commented Jan 17, 2017 at 14:02
ObjectCache cache = MemoryCache.Default; if(cache.Contains(network)) return (IEnumerable)cache.Get(network); — MMK
– MMK, Commented Jan 17, 2017 at 14:14

Dans · Accepted Answer · 2017-01-17 14:13:07Z

You need to set class and function( or property) static

public static MyClass { public static string MyFunc() { return "hello"; } }

usage

string myString = MyClass.MyFunc();

mrogal.ski · Accepted Answer · 2017-01-17 14:14:59Z

You can make singleton from your Network class :

public class Network { static Network _instance; public static Network Instance { get { return _instance ?? (_instance = new Network()); } } string _networkString; private Network() { _networkString = string.Empty; } public string GetMyNetwork() { if(string.IsNullOrEmpty(_networkString)) return (_networkString = MyProxy.Instance.GetNetworkConfig()); return _networkString; } }

Now you are able to use it the same way as you use your MyProxy object :

string network = Network.Instance.GetMyNetwork();

Rocker1985 · Accepted Answer · 2017-01-17 14:15:39Z

public class Network { private const string PROXY_HOSTNAME_PARAM = "ProxyHostname"; private string network = String.Empty; private Network _instance; public string GetMyNetwork() { if (String.IsNullOrWhiteSpace(network)) { MyProxy myprox = MyProxy.Instance; network = myprox .GetNetworkConfig(); } return network; } private Network() { } public Network Instance { get { if (this._instance == null) { this._instance = new Network(); } return this._instance; } } }

Make sure to maintain only one instance of Network class. Each time you create a new instance of Network class, the internal network variable will be a blank string, so calling GetMyNetwork method will again call the WCF service.

didnt help when i create a object of this class and call my method it hits wcf again
@sameer Whenever you call the method on a new instance of this class, it will hit the WCF. You should maintain a single instance of this class throughout the client application e.g. you could make a static variable or make the Network class singleton.
@sameer I have made this class singleton. Try to invoke the method like Network.Instance.GetMyNetwork(); This should solve your problem.
@Rocker1985 That's not even close to singleton. Thing you've done is preventing Network object from being instantiated with new Network() making it useless.

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