Creating a new .NET Standard Project The first step for moving this library is to create a new .NET Standard Class Library: This creates a new SDK style project using a csproj file. This is the new, more streamlined, MSBUILD based project format that…

eclipse创建了一个maven项目后,在导入依赖包后返现项目有个红色刺眼的感叹号,再看控制台有个Problem提示 Descriptio Resource Path LocationType Archive for required library: 'D:/apache-maven/apache-maven-3.6.0/mavenrepository/org/springframework/spring-aspects/4.3.7.RELEASE/spring-aspects-4.3.7.…

Process 'command '/Users/lidaqiang/Library/Android/sdk/build-tools/27.0.3/aapt'' finished with non-zero exit value 1  android studio 3.0  原因时xml布局文件有错误   比如颜色字符串不正确等…

编译错误 Severity Code Description Project File Line Suppression StateError NETSDK1045 The current .NET SDK does not support targeting .NET Core 3.0. Either target .NET Core 2.1 or lower, or use a version of the .NET SDK that supports .NET Core 3.0. Test…

C:\Program Files\dotnet\sdk\2.1.4\Sdks\Microsoft.NET.Sdk\build\Microsoft.NET.TargetFrameworkInference.targets(135,5): error : The current .NET SDK does not support targeting .NET Core 2.1.  Either target .NET Core 2.0 or lower, or use a version of th…

https://github.com/cardinals/XmlToObjectParser A simple dynamic library implemented in C# 4.0 to deal with XML structure Assume the following XML sample: _sampleXml = @"<?xml version=""1.0"" encoding=""ISO-8859-1"…

错误信息:Error:Execution failed for task ':app:compileDebugAidl'. > java.lang.IllegalStateException: aidl is missing from '/Users/renguodong/Library/Android/sdk/build-tools/26.0.2/aidl' 出错分析:网上查了一些信息,给出的都是要把BuildTools Version和Compile Sdk Version一致.可是我的已经…

asp.net core 2.0 一些有用有趣的设置. 面向(targeting)不同的.net版本: 打开asp.net core 2.0的项目文件: xxx.csproj, 这部分: <Project Sdk="Microsoft.NET.Sdk.Web"> <PropertyGroup> <TargetFramework>netcoreapp2.0</TargetFramework> </PropertyGroup> T…

Introducing .NET Standard In my last post, I talked about how we want to make porting to .NET Core easier. In this post, I’ll focus on how we’re making this plan a reality with .NET Standard. We’ll cover which APIs we plan to include, how cross-frame…

在我们开发很多项目中,数据访问都是必不可少的,有的需要访问Oracle.SQLServer.Mysql这些常规的数据库,也有可能访问SQLite.Access,或者一些我们可能不常用的PostgreSQL.IBM DB2.或者国产达梦数据库等等,这些数据库的共同特点是关系型数据库,基本上开发的模型都差不多,不过如果我们基于ADO.NET的基础上进行开发的话,那么各种数据库都有自己不同的数据库操作对象,微软企业库Enterprise Library是基于这些不同数据库的操作做的抽象模型,适合多数据…