JeffanChen的博客

git log 文件全路径获取该文件的最近几次更新记录选择想要退回的版本记录commit ID 即commit 后面的那串代码（commit 和 括号分支名之间）然后git checkout commitID 文件全路径就会告诉你修改情况然后上传更新分支就可以了如果帮助到你，能点个赞吗？...

DataTable dt = new DataTable();....//有几个主键就设置多长DataColumn[] PrimaryKeyColumns = new DataColumn[2];//添加主键，必须是已经在DataTable里有的列名PrimaryKeyColumns[0] = dt.Columns["UserName"];PrimaryKeyColumns[1] = dt.Columns["UserId"];//配置主键dt.PrimaryKey = PrimaryKeyC

相应column 设置ColumnEdit 为 MemoEditGridView 属性 设置 OptionsView 的 RowAutoHeight 为True

全部保错System.TypeLoadException:“Method ‘Create’ in type ‘Microsoft.EntityFrameworkCore.SqlServer.Query.Internal.SqlServerSqlTranslatingExpressionVisitorFactory’ from assembly ‘Microsoft.EntityFrameworkCore.SqlServer, Version=3.1.21.0, Culture=neutral, Publi

之前的写法public async Task<myMap> GetMapAsync( string CompanyId, string specs) { ICollection<myMap> result = _fcpDbContext.myMaps .Where(item => item.CompanyId== CompanyId) .AsNoTr

首先随便哪一个类举例子 public class User { .... public string name {get;set;} public string phone {get;set;} public string adress {get;set;} }然后在实例化之后，使用matchcolumn指定需要读取的属性User user = new User()...string matchcolumn = 'name';string name

Today, I was asked to kill the excel process which opened by other program.Since I can not change that program, I have to do some improvement in my code.At first, it is really difficult for me to search a good way to kill the process,but I was fortunate

C# switch 新用法C#8.0 switch新用法模式和 case guardC#8.0 switch新用法在公司发现了类似return（String）switch{AName => new User(Repository, settings),BName => new User2(Repository, settings),_ => throw new ArgumentException(…),}这种用法，以作记录模式和 case guardswitch expre

Please give me a like before reading !!!sample:using System;using System.Linq;namespace HelloWorld{ public class Person { // Constructor that takes no arguments: public Person() { Name = "unknown";

Mock 数据是前端开发过程中必不可少的一环，是分离前后端开发的关键链路。通过预先跟服务器端约定好的接口，模拟请求数据甚至逻辑，能够让前端开发独立自主，不会被服务端的开发所阻塞。写一个简单的例子 [HttpPost] public ActionResult<IEnumerable<Product>> searchProduct() { string mockData; //字符串用 ""包裹,数字不用

原文

DateTime dt = DateTime.Now; //当前时间 DateTime startWeek = dt.AddDays(1 - Convert.ToInt32(dt.DayOfWeek.ToString("d"))); //本周周一 DateTime endWeek = startWeek.AddDays(4); //本周周五 （后移四天）//今天周五Console.WriteLine(dt.DayOfWeek)//FridayConsole.WriteLine(dt.

yourstr.Replace("-", string.Empty)//比如删除'-'