u011511086的专栏

.NET8使用EF Core连接SQLite

.NET Core全屏截图，C#全屏截图

Linux中.NET读取excel组件，不会出现The type initializer for 'Gdip' threw an exception异常;C#读取excel；

Unable to read data from the transport connection: The connection was closed

.net依赖注入，控制反转

.net core发送邮件

【代码】.net core6 检测ip、网址是否可访问。不需要端口号。

【代码】Aspose.Words生成饼图，柱状图，NET Core环境。

Unhandled exception. Aspose.Words.FileCorruptedException: The document appears to be corrupted and cannot be loaded

Could not load file or assembly ‘System.Security.Permissions, Version=0.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51’. 系统找不到指定的文件。在nuget中，搜索System.Security.Permissions并安装到项目引用中，即可解决。

【代码】.net core多线程新增数据，使用线程安全类型ReadOnlySpan

netcore在linux后台运行。at Interop.ThrowExceptionForIoErrno(ErrorInfo errorInfo, String path, Boolean isDirectory, Func`2 errorRewriter)

导出csv文件，可用于.net core在Linux开发运行，而不依赖与组件System.Drawing.Common生成电子表格文件

.net core获取已经注册的服务，类，接口。再次调用类的方法

No data is available for encoding 936.For information on defining a custom encoding,see the documentation for the Encoding.RegisterProvider method.

检测到包降级，Microsoft.NETCore.Platforms从1.1.1降级到1.1.0，直接从项目引用报以选择不同版本

using Microsoft.EntityFrameworkCore;using System;using System.Collections.Generic;using System.Text;using Microsoft.Extensions.Logging;using Microsoft.EntityFrameworkCore.Diagnostics;using WebMvcNetCore.TuShi.FenGong.Model;using EntityFrameworkCore.

NuGet安装包：System.Drawing.CommonSystem.Drawing.Common画图支持：System.Drawing.Common缓存支持：System.Drawing.Commonusing System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Drawing.Drawing2D;u

首先在nuget中安装CefSharp.Wpf组件用于解析html，是一个web浏览器内核，支持h5我使用的CefSharp.Wpf版本是90.6.70WPF目标框架：.NET5using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Windows;using System.Windows.Contr

微软官网文档https://docs.microsoft.com/zh-cn/dotnet/api/system.runtime.caching.memorycache?view=dotnet-plat-ext-5.0使用缓存主要是MemoryCache 类命名空间:System.Runtime.Caching程序集:System.Runtime.Caching.dllMemoryCache 类支持情况：.NET Framework： 4.0, 4.5, 4.5.1, 4.5.2, 4.6,

using System;namespace ConsoleAppNET5.TestVideoZhuanMa{ class Program { static void Main(string[] args) { var process = new System.Diagnostics.Process(); //应该触发退出事件 process.EnableRaisingEvents

微软官网文档：在 CentOS 上安装 .NET SDK 或 .NET 运行时https://docs.microsoft.com/zh-cn/dotnet/core/install/linux-centos.NET 应用程序发布概述https://docs.microsoft.com/zh-cn/dotnet/core/deploying/检查是否安装了.NET5运行时dotnet --list-runtimes 如果出现下面的记录表示已经安装了[root@localhost conso

我的系统是centos8系统报的错误：System.InvalidOperationException: Cannot start process because a file name has not been provided. at System.Diagnostics.Process.Start() in /_/src/libraries/System.Diagnostics.Process/src/System/Diagnostics/Process.cs:line 1207 at

添加SignalR推送官方文档：https://docs.microsoft.com/zh-cn/aspnet/core/signalr/groups?view=aspnetcore-5.0项目安装Microsoft.AspNetCore.SignalR包配置集线器类using System;using System.Collections.Generic;using System.Linq;using System.Threading.Tasks;using Microsoft.AspNe

.NET 压缩图片，生成缩略图

需要在nuget安装包System.Drawing.Commonusing System;using System.Drawing;using System.Drawing.Drawing2D;using System.Drawing.Imaging;using System.IO; /// <summary> /// 生成缩略图，针对GIF图片 /// </summary> /// <param na

//压缩图片 int width = 200; using (var imgBmp = new Bitmap(@"d:\壁纸\b2.jpg")) { //找到新尺寸 int oWidth = imgBmp.Width; int oHeight = imgBmp.Height; ...

调用验证ASP.NET Core 5//.NET5 //ASP.NET Core 5上传文件public async Task<ActionResult> UploadImg(IFormFile file){ //检查文件真实格式 System.IO.MemoryStream ms = new System.IO.MemoryStream(); await file.CopyToAsync(ms); byte[] bytes = new byte[160]; ms.Pos

using System;using System.Collections.Generic;using System.IO;using System.Linq;using System.Security.Cryptography;using System.Text;using System.Threading.Tasks;namespace WebNetCore5_Img_Storage.Model.Tool{ //将AES加密成16进制字符串 public class A

using BLL;using DAL;using Hprose.RPC;using IBLL;using IDAL;using Microsoft.EntityFrameworkCore;using Microsoft.Extensions.Configuration;using Microsoft.Extensions.DependencyInjection;using Sy...

//Startup.cs中IServiceProviderpublic void ConfigureServices(IServiceCollection services){ string sqlConnection = &amp;quot;连接字符串&amp;quot;; services.AddDbContext&amp;amp;lt;DataContext&amp;amp;gt;(option =&amp;amp;gt; option.

修改项目的csproj文件内容，加入&amp;lt;RuntimeIdentifier&amp;gt;win10-x64&amp;lt;/RuntimeIdentifier&amp;gt;变成： &amp;lt;PropertyGroup&amp;gt; &amp;lt;OutputType&amp;gt;Exe&amp;lt;/OutputType&amp;gt; &a

配置文件config.xml：&amp;lt;?xml version=&quot;1.0&quot; encoding=&quot;utf-8&quot; ?&amp;gt;&amp;lt;!--配置文件不允许有&amp;amp;符号--&amp;gt;&amp;lt;appSettings&amp;gt; &amp;lt;token&amp;gt;token=SADFASDF;oudes