Saturday, July 25, 2015

AngularJS $http.delete Ajax calls

In the post AngularJS Ajax using $http we saw that we can perform Ajax calls to the server in AngularJS using $http service, and we saw that $http supports Get, Post, Put and Delete operations. In this post we shall see on how to make a $http.delete Ajax call in AngularJS

The following example shows how to make a $http.delete call to an Asp.Net Web API Controller method.
WebAPI Post Method
    public class PackageController : ApiController
        PkgEntities objDBContext = new PkgEntities();
        public string Delete(int id)
                Package currPackage = (from Packages in objDBContext.Packages
                                       where Packages.PackageId == id
                                       select Packages).First();
                return "Package " + currPackage.Name + " deleted Succesfully";
            catch (Exception ex)
                return "Error: " + ex.Message.ToString();

AngularJS call to WebAPI Get method
        $http.delete(GetRootPath() + "Package/" + packageId)
           .then(function (results) {
               try {
               catch (err) {
           }, function (results) {
               alert("Error: " + + "; "
                                     + results.status);

The $http.delete method calls the server side WebAPI Post() method with the id of the package to be deleted as the parameter. The WebAPI contoroller’s Delete method automatically receives this call and deletes the corresponding package from the Database Context and returns a success/failure message to AngularJS. The AngularJS client method receives the message and displays it to the end user.

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