GenericArguments[0], 'DataLayer.TestContext', on 'System.Data.Entity.IDatabaseInitializer`1[TContext]' violates the constraint of type parameter 'TContext'.
<contexts>
<context type=" DataLayer.TestContext, DataLayer">
<databaseInitializer type="System.Data.Entity.DropCreateDatabaseAlways`1[
[DataLayer.TestContext, DataLayer]], EntityFramework" />
</context>
</contexts>
An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately
function testScope() {
var myTest = true;
if (true) {
var myTest = "I am changed!"
}
alert(myTest);
}
testScope(); // will alert "I am changed!" function testScope() {
var myTest = true;
if (true) {
var myTest = "I am changed!"
}
alert(myTest);
}
testScope(); // will alert "I am changed!"
alert(myTest); // will throw a reference error, because it doesn't exist outside of the function <script type="text/javascript">
// a globally-scoped variable
var a = 1;
// global scope
function one()
{
alert(a);
}
// local scope
function two(a)
{
alert(a);
}
// local scope again
function three()
{
var a = 3;
alert(a);
}
// Intermediate: no such thing as block scope in javascript
function four()
{
if (true)
{
var a = 4;
}
alert(a); // alerts '4', not the global value of '1'
}
// Intermediate: object properties
function Five()
{
this.a = 5;
}
// Advanced: closure
var six = function ()
{
var foo = 6;
return function ()
{
// javascript "closure" means I have access to foo in here,
// because it is defined in the function in which I was defined.
alert(foo);
}
}()
// Advanced: prototype-based scope resolution
function Seven()
{
this.a = 7;
}
// [object].prototype.property loses to [object].property in the lookup chain
Seven.prototype.a = -1; // won't get reached, because 'a' is set in the constructor above.
Seven.prototype.b = 8; // Will get reached, even though 'b' is NOT set in the constructor.
// These will print 1-8
one();
two(2);
three();
four();
alert(new Five().a);
six();
alert(new Seven().a);
alert(new Seven().b);
</Script> var obj = {
value: 0,
increment: function() {
this.value+=1;
}
};
obj.increment(); //Method invocation <script type="text/javascript">
var value = 500; //Global variable
var obj = {
value: 0,
increment: function() {
this.value++;
var innerFunction = function() {
alert(this.value);
}
innerFunction(); //Function invocation pattern
}
}
obj.increment(); //Method invocation pattern
<script type="text/javascript">
Result : 500 <script type="text/javascript">
var value = 500; //Global variable
var obj = {
value: 0,
increment: function() {
var that = this;
that.value++;
var innerFunction = function() {
alert(that.value);
}
innerFunction(); //Function invocation pattern
}
}
obj.increment();
<script type="text/javascript">
Result : 1 var Dog = function(name) {
//this == brand new object ({});
this.name = name;
this.age = (Math.random() * 5) + 1;
};
var myDog = new Dog('Spike');
//myDog.name == 'Spike'
//myDog.age == 2
var yourDog = new Dog('Spot');
//yourDog.name == 'Spot'
//yourDog.age == 4 var createCallBack = function(init) { //First function
return new function() { //Second function by Constructor Invocation
var that = this;
this.message = init;
return function() { //Third function
alert(that.message);
}
}
}
window.addEventListener('load', createCallBack("First Message"));
window.addEventListener('load', createCallBack("Second Message")); myFunction.apply(thisContext, arrArgs); myFunction.call(thisContext, arg1, arg2, arg3, ..., argN);
var contextObject = {
testContext: 10
}
var otherContextObject = {
testContext: "Hello World!"
}
var testContext = 15; // Global variable
function testFunction() {
alert(this.testContext);
}
testFunction(); // This will alert 15
testFunction.call(contextObject); // Will alert 10
testFunction.apply(otherContextObject); // Will alert "Hello World” var o = {
i : 0,
F : function() {
var a = function() { this.i = 42; };
a();
document.write(this.i);
}
};
o.F();
Result :0 var p = {
i : 0,
F : function() {
var a = function() { this.i = 42; };
a.apply(this);
document.write(this.i);
}
};
p.F();
Result :42 var q = {
i: 0,
F: function F() {
var that = this;
var a = function () {
that.i = 42;
}
a();
document.write(this.i);
}
}
q.F(); public class Program
{
public static void Main(string[] args)
{
var host = new WebHostBuilder()
.UseKestrel()
.UseContentRoot(Directory.GetCurrentDirectory())
.UseIISIntegration()
.UseStartup<Startup>()
.Build();
host.Run();
}
} 
"dependencies": {
// same as before
"Microsoft.AspNetCore.StaticFiles": "1.0.0"
}, public class Startup
{
public void ConfigureServices(IServiceCollection services)
{
}
public void Configure(IApplicationBuilder app)
{
app.UseStaticFiles();
//app.UseWelcomePage();
app.Run(async context =>
{
await context.Response.WriteAsync("Hello DNT!");
});
}
} <!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <title>Hello World</title> </head> <body> Hello World! </body> </html>
public void Configure(IApplicationBuilder app)
{
app.UseDefaultFiles();
app.UseStaticFiles(); 
// Serve my app-specific default file, if present.
DefaultFilesOptions options = new DefaultFilesOptions();
options.DefaultFileNames.Clear();
options.DefaultFileNames.Add("mydefault.html");
app.UseDefaultFiles(options); public void Configure(IApplicationBuilder app)
{
app.UseStaticFiles();
app.UseDefaultFiles(); 
○ wwwroot § css § images § ... ○ MyStaticFiles § test.png
app.UseStaticFiles(new StaticFileOptions
{
FileProvider = new PhysicalFileProvider(root: Path.Combine(Directory.GetCurrentDirectory(), @"MyStaticFiles")),
RequestPath = new PathString("/StaticFiles")
}); 
app.UseDirectoryBrowser(new DirectoryBrowserOptions
{
FileProvider = new PhysicalFileProvider(root: Path.Combine(Directory.GetCurrentDirectory(), @"wwwroot\images")),
RequestPath = new PathString("/MyImages")
}); Unable to resolve service for type 'System.Text.Encodings.Web.HtmlEncoder' while attempting to activate 'Microsoft.AspNetCore.StaticFiles.DirectoryBrowserMiddleware'.
public void ConfigureServices(IServiceCollection services)
{
services.AddDirectoryBrowser();
} 
app.UseStaticFiles(new StaticFileOptions
{
FileProvider = new PhysicalFileProvider(root: Path.Combine(Directory.GetCurrentDirectory(), @"wwwroot\images")),
RequestPath = new PathString("/MyImages")
}); using System.IO;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Http;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.FileProviders;
namespace Core1RtmEmptyTest
{
public class Startup
{
public void ConfigureServices(IServiceCollection services)
{
services.AddDirectoryBrowser();
}
public void Configure(IApplicationBuilder app)
{
app.UseDefaultFiles();
app.UseStaticFiles(); // For the wwwroot folder
// For the files outside of the wwwroot
app.UseStaticFiles(new StaticFileOptions
{
FileProvider = new PhysicalFileProvider(root: Path.Combine(Directory.GetCurrentDirectory(), @"MyStaticFiles")),
RequestPath = new PathString("/StaticFiles")
});
// For DirectoryBrowser
app.UseStaticFiles(new StaticFileOptions
{
FileProvider = new PhysicalFileProvider(root: Path.Combine(Directory.GetCurrentDirectory(), @"wwwroot\images")),
RequestPath = new PathString("/MyImages")
});
app.UseDirectoryBrowser(new DirectoryBrowserOptions
{
FileProvider = new PhysicalFileProvider(root: Path.Combine(Directory.GetCurrentDirectory(), @"wwwroot\images")),
RequestPath = new PathString("/MyImages")
});
//app.UseWelcomePage();
app.Run(async context =>
{
await context.Response.WriteAsync("Hello DNT!");
});
}
}
} app.UseFileServer();
app.UseFileServer(enableDirectoryBrowsing: true);
app.UseFileServer(new FileServerOptions
{
FileProvider = new PhysicalFileProvider(
Path.Combine(Directory.GetCurrentDirectory(), @"MyStaticFiles")),
RequestPath = new PathString("/StaticFiles"),
EnableDirectoryBrowsing = false
}); // Set up custom content types -associating file extension to MIME type
var provider = new FileExtensionContentTypeProvider();
provider.Mappings[".xyz"] = "text/html";
app.UseStaticFiles(new StaticFileOptions
{
ContentTypeProvider = provider
}) ; // For the wwwroot folder 
public class XyzContentTypeProvider : FileExtensionContentTypeProvider
{
public XyzContentTypeProvider()
{
this.Mappings.Add(".xyz", "text/html");
}
} app.UseStaticFiles(new StaticFileOptions
{
ContentTypeProvider = new XyzContentTypeProvider()
}) ; // For the wwwroot folder app.UseStaticFiles(new StaticFileOptions
{
ServeUnknownFileTypes = true,
DefaultContentType = "image/png"
}); What you will learn in this eBook?
We will cover the following Angular concepts in this book:
- Using Cloud Firestore with an Angular application
- Angular Material and Bootstrap
- Template-driven forms
- Form validation
- Custom pipes
- Auth-guards in Angular
- Authentication and Authorization
- Login with Google using Firebase
- Social share option using ngx-share
- Client-Side pagination using ngx-pagination
- Deploying an Angular app in Firebase
Course Introduction Module Introduction Introduction to Angular Angular Architecture Demo: Hello World in Angular The Angular Event Reg Application Angular Seed Summary
