Use Language Integrated Query (LINQ) for file system operations that don't to change the contents of the files or folders.
Can i use TolistAsync() when doing LINQ to object Can lock work between multiple objects of a class ? Can multiple threads safely run the same method simultaneously? can not cast interface to object which imlements it Can not find System.Web in add reference. Can not implicitly convert '...
var data = q.UserName = "王五"; //将这条数据的UserName修改为“王五” UpdateModel<User>(q); //更新此条数据;注意q是一从db中查询出来的。(如果不是从db中查询得到,则UpdateModel这句代码无效) //db.User.Add(q); //再将此条数据添加到数据库表中 //db.User.Remove(q);//然后再删除此条数据...
</UserControl>//csusingSystem;usingSystem.Collections.Generic;usingSystem.Linq;usingSystem.Text;usingSystem.Threading.Tasks;usingSystem.Windows;usingSystem.Windows.Controls;usingSystem.Windows.Data;usingSystem.Windows.Documents;usingSystem.Windows.Input;usingSystem.Windows.Media;usingSystem.Windows.Media.Imaging...
Learn how to optimize your game's performance by testing against hardware platform memory limitations with the profile memory usage tool in your Unity project.
Once you have a table reference, you can use it to query for data on the server. Queries are made in a "LINQ-like" language. To return all data from the table, use the following code: JavaScript /** * Process the results that are received by a call to table.read() * * @param...
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Runtime.InteropServices; namespace WindowsFormsApplication1 { class Win32 { #region "CONSTS" public const int INTERNET_OPEN_TYPE_PRECONFIG = 0; public const int INTER...
in m_GeneratedTags) { GUILayout.BeginHorizontal(); GUI.enabled = !m_FileUpdate.Tags?.Contains(tag.Value) ?? true; if (GUILayout.Button("Add", GUILayout.Width(40))) { m_FileUpdate.Tags ??= Array.Empty<string>(); m_FileUpdate.Tags = m_FileUpdate.Tags.Append(tag.Value).ToArray...
Transformations can be applied to cell values before they are set on the class properties. The example below transforms "Y" values in the "IsBankrupt" column to a boolean value of true. var excel = new ExcelQueryFactory("excelFileName"); excel.AddTransformation<Company>(x => x.IsBankrupt...
Furthermore, it can use the previous value of the item and atomically modify it to a new value. Similar to the PutItem operation, the UpdateItem operation can either create a new DynamoDB item or update an existing one.The UpdateItem() method allows tapping into the rich set of ...