talkingdotnet

public ActionResult OnPostImport()
{
    IFormFile file = Request.Form.Files[0];
    string folderName = "Upload";
    string webRootPath = _hostingEnvironment.WebRootPath;
    string newPath = Path.Combine(webRootPath, folderName);
    StringBuilder sb = new StringBuilder();
    if (!Directory.Exists(newPath))
    {
        Directory.CreateDirectory(newPath);

talkingdotnet

public async Task<IActionResult> OnPostExport()
{
    string sWebRootFolder = _hostingEnvironment.WebRootPath;
    string sFileName = @"demo.xlsx";
    string URL = string.Format("{0}://{1}/{2}", Request.Scheme, Request.Host, sFileName);
    FileInfo file = new FileInfo(Path.Combine(sWebRootFolder, sFileName));
    var memory = new MemoryStream();
    using (var fs = new FileStream(Path.Combine(sWebRootFolder, sFileName), FileMode.Create, FileAccess.Write))
    {
        IWorkbook workbook;

talkingdotnet

services.AddSwaggerGen(c =>
{
    c.SwaggerDoc("v1", new Info
    {
        Version = "v1",
        Title = "My API",
        Description = "My First ASP.NET Core Web API",
        Contact = new Contact() { Name = "Talking Dotnet", Email = "[email protected]", Url = "www.talkingdotnet.com" }
    });

talkingdotnet

app.UseSpa(spa =>
{
    // To learn more about options for serving an Angular SPA from ASP.NET Core,
    // see https://go.microsoft.com/fwlink/?linkid=864501

    spa.Options.SourcePath = "ClientApp";

    if (env.IsDevelopment())
    {
        spa.UseAngularCliServer(npmScript: "start");

talkingdotnet

app.UseSpa(spa =>
{
    // To learn more about options for serving an Angular SPA from ASP.NET Core,
    // see https://go.microsoft.com/fwlink/?linkid=864501

    spa.Options.SourcePath = "ClientApp";

    if (env.IsDevelopment())
    {
        spa.UseProxyToSpaDevelopmentServer("http://localhost:4200");

talkingdotnet

app.UseSpa(spa =>
{
    spa.Options.SourcePath = "ClientApp";

    if (env.IsDevelopment())
    {
        spa.UseReactDevelopmentServer(npmScript: "start");
    }
});

talkingdotnet

if (!ModelState.IsValid)
{
  // bad request - Take necessary actions
}

talkingdotnet

public class ValidateModelStateAttribute : ActionFilterAttribute
{
    public override void OnActionExecuting(ActionExecutingContext context)
    {
        if (!context.ModelState.IsValid)
        {
            context.Result = new BadRequestObjectResult(context.ModelState); 
        }
    }
}

talkingdotnet

public void ConfigureServices(IServiceCollection services)
{
    services.AddMvc(options =>
    {        
        options.Filters.Add(typeof(ValidateModelStateAttribute));
    });
}

talkingdotnet

public static class SessionExtensions
{
    public static void SetObject(this ISession session, string key, object value)
    {
        session.SetString(key, JsonConvert.SerializeObject(value));
    }

    public static T GetObject<T>(this ISession session, string key)
    {
        var value = session.GetString(key);