The exception that is thrown when a null reference (Nothing in Visual Basic) is passed to a method that does not accept it as a valid argument.
ArgumentException ArgumentException 构造函数 属性 方法 ArgumentNullException ArgumentOutOfRangeException ArithmeticException Array ArraySegment<T>.Enumerator ArraySegment<T> ArrayTypeMismatchException AssemblyLoadEventArgs AssemblyLoadEventHandler AsyncCallback
throw new ArgumentNullException (“must pass an employee name”); rather than: throw new ArgumentNullException (“Name”, “must pass an employee name”); so we end up with error message such as: Unhandled Exception: System.ArgumentNullException: Value cannot be null. Parameter name: must pa...
public void Configure(IApplicationBuilder app, IHostingEnvironment env) { if (env.IsDevelopment()) { app.UseBrowserLink(); app.UseDeveloperExceptionPage(); } else { app.UseExceptionHandler("/Home/Error"); } app.UseStaticFiles(); app.UseMvc(routes => { routes.MapRoute( name: "default", t...
vs2022使用EF迁移报错System.ArgumentNullException: 值不能为 null。 项目中EntityFramework版本为6.2.0 更新至6.4.4问题解决
An ArgumentNullException exception is thrown at run time in the following two major circumstances, both of which reflect developer error:An uninstantiated object is passed to a method. To prevent the error, instantiate the object. An object returned from a method call is then passed as an ...
An ArgumentNullException exception is thrown at run time in the following two major circumstances, both of which reflect developer error:An uninstantiated object is passed to a method. To prevent the error, instantiate the object. An object returned from a method call is then passed as an ...
An ArgumentNullException exception is thrown at run time in the following two major circumstances, both of which reflect developer error:An uninstantiated object is passed to a method. To prevent the error, instantiate the object. An object returned from a method call is then passed as an ...
ArgumentNullException 当将空引用（在 Visual Basic 中为 Nothing）传递给不接受它作为有效参数的方法时引发的异常，而NullReferenceException是尝试空对象引用时引发的异常。可以参考msdn的详细说明
An ArgumentNullException exception is thrown at run time in the following two major circumstances, both of which reflect developer error:An uninstantiated object is passed to a method. To prevent the error, instantiate the object. An object returned from a method call is then passed as an ...