protectedoverridevoidOnLoad(EventArgse){base.OnLoad(e);this.dbContext=newProductsContext();// Uncomment the line below to start fresh with a new database.// this.dbContext.Database.EnsureDeleted();this.dbContext.Database.EnsureCreated();this.dbContext.Categories.Load();this.categoryBindingSource.DataSource=dbContext.Categories.
AI代码解释 // 设置Socket读写时间RequestConfig requestConfig=RequestConfig.custom().setSocketTimeout(2000).build();// 构建请求HttpUriRequest request=RequestBuilder.create("GET").setConfig(requestConfig).setUri("http://localhost:8080/socket/hello-world").build();// 获取http clientCloseableHttpClient h...
问无法完成该操作，因为DbContext已被disposed.System.InvalidOperationExceptionEN要利用IQueryable，至少必须...
【.net core2.2升级到3.1】InvalidOperationException: Endpoint Routing does not support 'IApplicationBuilder.UseMvc(...)'. 参考自:https://www.cnblogs.com/tianma3798/p/11909293.html 我自己修改的方式: a、增加options.EnableEndpointRouting = false; b、将CompatibilityVersion.Version_2_2改为Compatibility...
.PropertyType; if (body != null) { if (property != null) { var allEntities = modelBuilder?.Model.GetEntityTypes().Where(e => e.FindProperty(property) != null).Select(e => e.ClrType).ToList(); if (allEntities != null) { foreach (var entity in allEntities) { var entity...
Access to the path 'C:\' is denied. access to the port com1 is denied c# Access to the registry key 'HKEY_CLASSES_ROOT\name of the class' is denied. access variable from another function Access Variables in Different Projects in a Solution Accessibility of parent's class fields from chil...
Symptom When running an application in PowerBuilder and connecting to MS SQL Server 2008 using ADO.NET, getting the following error: System.InvalidOperationException: This SqlTransaction has completed; it is no longer usable. at Sybase.PowerBuilde...
.PropertyType;if(body!=null){if(property!=null){varallEntities=modelBuilder?.Model.GetEntityTypes().Where(e=>e.FindProperty(property)!=null).Select(e=>e.ClrType).ToList();if(allEntities!=null){foreach(varentityinallEntities){varentityPropertyType=entity?.GetProperty(property)?.PropertyType...
Bot.Builder.Dialogs 程序集: Microsoft.Bot.Builder.dll 包: Microsoft.Bot.Builder v3.30.0 Source: LuisDialog.cs 无效意向处理程序的异常。 C# 复制 [System.Serializable] public sealed class InvalidIntentHandlerException : InvalidOperationException 继承 InvalidOperationException InvalidIn...
AsyncVoidMethodBuilder.cs 将一个异常绑定到该方法生成器。 C#复制 publicvoidSetException(Exception exception); 参数 exception Exception 要绑定的异常。 例外 ArgumentNullException exception为null。 InvalidOperationException 未初始化该生成器。 注解 此类型及其成员供编译器使用。