Learn more about Telerik Everlive here

You can consider this post as second post of the series. In first post of this series we learnt about fetching data from Telerik Everlive in a .Net application.

How to fetch data from Telerik Everlive in a .NET Application

In previous post we touched upon following,

• Creating client side representation of Everlive content type
• Adding required assembly to work with Everlive in a .Net application
• Fetching data from Everlive in .Net application.

To create an item also we need client side representation of Everlive content type. You can create a single item as following,

static async void CreateData(EverliveApp productApp)
 {
 var productToInsert = new Products
 {
 ProductName = "sugar",
 IsContinued = true ,
 Quantity = 100,
 UnitInStock = 23,
 UnitPrice = 20 ,

 };

await productApp.WorkWith().Data<Products>().Create(productToInsert).ExecuteAsync();
 Console.WriteLine("Product Inserted " + productToInsert.Id);
 }

In above code,

• We are creating item to be inserted. This item is instance of client side representation (class) of Everlive content type. In this case we are creating object of Products. This will pass as parameter to Create function.
• Asynchronously we are inserting an item by calling Create function. This function takes instance of Products as parameter. This instance will get inserted as an item to Telerik Eeverlive

So these simple steps you need to follow to insert an item from .Net application to Telerik Everlive content type.

Next you can update an item by first fetching it on basis of id or any other column. Once data is fetched at the client application , you can update that and using Update() function save data back to Everlive server.

static async void UpdateData(EverliveApp productApp)
 {

var productToUpdate = await productApp.WorkWith().Data<Products>().GetById("76a49eb0-67ad-11e3-8374-496a59d093be").ExecuteAsync();
 productToUpdate.ProductName = "Sugar and Salt";
 productToUpdate.IsContinued = true;
 await productApp.WorkWith().Data<Products>().Update(productToUpdate).ExecuteAsync();

}

In above code,

• We are fetching an item to update
• Updating required columns
• Using Update function saving data back to Everlive

These simple steps are required to update an item from .Net application.

Deleting an item is simplest. You need to pass id of item to delete that. If you want you can delete an item on other projection as well. In further posts we will discuss about that. To keep it simple we can delete an item on basis of id as below,

static async void DeleteData(EverliveApp productApp)
 {

var idtoDelete = "76a49eb0-67ad-11e3-8374-496a59d093be";
 await productApp.WorkWith().Data<Products>().Delete(idtoDelete).ExecuteAsync();

}

These simple steps are required to perform CRUD operation from .Net application on Telerik Everlive data. I hope you find this post useful. Thanks for reading.

Learn more about Telerik Everlive here

To start with and put in a single sentence Telerik Everlive in Backend as a Service offering from Telerik. In this post we will take a look on fetching data from Everlive in a .Net application. We will consider using .Net Console Application. However concept will be same for almost all other kind of .Net applications like WPF, Windows Apps.

To start with download .NET SDK from here . On download page make sure that you have selected .NET platform. Download and extract folder. You should get two dll. You need to add these dll in .Net project.

To add dll in project right click on Reference in project. From context menu select option of Add Reference. You need to add above two extracted dll in the project.

After adding required references next step is to create class which will represent Everlive content type in the client application. That class can be created as following ,

public class Products : DataItem
 {
 private string productName;
 public string ProductName
 {
 get
 {
 return this.productName;
 }

set
 {
 this.productName = value;
 this.OnPropertyChanged("ProductName");
 }
 }

private int unitPrice;
 public int UnitPrice
 {
 get
 {
 return this.unitPrice;
 }

set
 {
 this.unitPrice = value;
 this.OnPropertyChanged("UnitPrice");
 }
 }

private int quantity;
 public int Quantity
 {
 get
 {
 return this.quantity;
 }

set
 {
 this.quantity = value;
 this.OnPropertyChanged("Quantity");
 }
 }

private bool isContinued;
 public bool IsContinued
 {
 get
 {
 return this.isContinued;
 }

set
 {
 this.isContinued = value;
 this.OnPropertyChanged("IsContinued");
 }
 }
 private int unitInStock;
 public int UnitInStock
 {
 get
 {
 return this.unitInStock;
 }

set
 {
 this.unitInStock = value;
 this.OnPropertyChanged("UnitInStock");
 }
 }


}

There are couple of points you need to keep in mind,

• Class name should be same as Content Type name
• Class should inherit from DataItem. It is not a must condition though.
• Properties name should be same as columns of Content Type

After creating client side class, you can either synchronously or asynchronously fetch items from Everlive. Items can be fetched asynchronously as below,

static async void FetchData(EverliveApp productApp)
 {
 var products = await productApp.WorkWith().Data<Products>().GetAll().ExecuteAsync();

 foreach (var item in products)
 {
 Console.WriteLine(item.ProductName + item.UnitPrice);

}
 }

Important point is that you need to pass client side type (class) in this case Product to fetch items. You need to make an instance of EverliveApp class passing your app key in the constructor.

static void Main(string[] args)
 {
 EverliveApp productApp = new EverliveApp("yourkey");
 FetchData(productApp);
 Console.ReadKey(true);
 }

This is all you need to do to fetch elements from Telerik Eeverlive in a .Net Console Application. I hope you like this post. Thanks for reading.