EntityFrame.DataRef 1.0.5

This package will be deleted within 48 hours

The .NET platform (pronounced as "dot net"; formerly named .NET Core) is a free and open-source, managed computer software framework for Windows, Linux, and macOS operating systems.[5] It is a cross-platform successor to the .NET Framework. The project is mainly developed by Microsoft employees by way of the .NET Foundation and is today released under an MIT License.[4]

New versions of the .NET platform are released annually, typically in November. The most recent version of .NET is .NET 10, released in November 2025, which is a long-term support (LTS) version, and is scheduled to receive updates until November 2028

In the late 1990s, Microsoft began developing a managed code runtime and programming language (C#) which it billed together as part of the ".NET platform", with the core runtime and software libraries comprising the .NET Framework.

At the heart of the .NET Platform is the .NET Framework, a high-productivity, multilanguage development and execution environment for building and running Web services with important features such as cross-language inheritance and debugging.[7]

Soon after the announcement of the C# language at the Professional Developers Conference in 2000 and previews of its software became available, Microsoft began a standardization effort through ECMA for what it dubbed the Common Language Infrastructure. The company continued development and support of its own implementation as proprietary, closed source software in the meantime.[8]

On November 12, 2014, Microsoft introduced .NET Core—an open-source, cross-platform[9] successor[10] to .NET Framework—and released source code for the .NET Core CoreCLR implementation, source for the "entire [...] library stack" for .NET Core,[11] and announced the adoption of a conventional ("bazaar"-like) open-source development model under the stewardship of the .NET Foundation. Miguel de Icaza describes .NET Core as a "redesigned version of .NET that is based on the simplified version of the class libraries",[12] and Microsoft's Immo Landwerth explained that .NET Core would be "the foundation of all future .NET platforms". At the time of the announcement, the initial release of the .NET Core project had been seeded with a subset of the libraries' source code and coincided with the relicensing of Microsoft's existing .NET reference source away from the restrictions of the Ms-RSL. Landwerth acknowledged the disadvantages of the formerly selected shared license, explaining that it made codename Rotor "a non-starter" as a community-developed open source project because it did not meet the criteria of an Open Source Initiative (OSI) approved license.[13][14][15]

.NET Core 1.0 was released on June 27, 2016,[16] along with Microsoft Visual Studio 2015 Update 3, which enables .NET Core development.[17] .NET Core 1.0.4 and .NET Core 1.1.1 were released along with .NET Core Tools 1.0 and Visual Studio 2017 on March 7, 2017.[18]

.NET Core 2.0 was released on August 14, 2017, along with Visual Studio 2017 15.3, ASP.NET Core 2.0, and Entity Framework Core 2.0.[19] .NET Core 2.1 was released on May 30, 2018.[20] NET Core 2.2 was released on December 4, 2018.[21]

.NET Core 3 was released on September 23, 2019.[22] NET Core 3 adds support for Windows desktop application development[23] and significant performance improvements throughout the base library.

In November 2020, Microsoft released .NET 5.0.[24] The "Core" branding was abandoned and version 4.0 was skipped to avoid conflation with .NET Framework, of which the latest releases had all used 4.x versioning for all significant (non-bugfix) releases since 2010.

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/// using Folder.File;

/// click

/// if (Check() == true)

/// {

/// try

/// {

/// using (Entities context = new Entities())

/// {

/// Users userCheck = context.Users.FirstOrDefault(x ⇒ x.login == loginTxt.Text && x.password == passwordTxt.Password);

/// if (userCheck != null)

/// {

/// switch (userCheck.roleId)

/// {

/// case 0:

/// AdminWindow adminWindow = new AdminWindow();

/// adminWindow.Show();

/// this.Close();

/// break;

/// case 1:

/// UserWindow userWindow = new UserWindow();

/// userWindow.Show();

/// this.Close();

/// break;

/// }

/// }

/// else

/// {

/// MessageBox.Show("Такого пользователя нет");

/// }

/// }

/// }

/// catch (Exception ex)

/// {

/// MessageBox.Show("Что то не так");

/// }

/// }

/// public bool Check()

///{

/// if (loginTxt.Text == null || loginTxt.Text == string.Empty || loginTxt.Text == "")

/// {

/// MessageBox.Show("Введите логин");

/// return false;

/// }

/// else if (passwordTxt.Password == null || passwordTxt.Password == string.Empty || passwordTxt.Password == "")

/// {

/// MessageBox.Show("Введите пароль");

/// return false;

/// }

/// else

/// {

/// return true;

/// }

///}

///private void Reg_Click(object sender, RoutedEventArgs e)

///{

/// if (Check() == true)

/// {

/// try

/// {

/// Users user = new Users();

/// user.name = nameRegTxt.Text;

/// user.login = loginRegTxt.Text;

/// user.password = passwordRegTxt.Text;

/// user.roleId = Convert.ToInt32(roleIdTxt.Text);

/// using (Entities context = new Entities())

/// {

/// context.Users.Add(user);

/// context.SaveChanges();

/// }

/// }

/// catch (Exception ex)

/// {

/// MessageBox.Show(ex.ToString());

/// }

/// }

/// public static Users tempUser;

///private void DataGrid_Click(object sender, RoutedEventArgs e)

///{

/// using (Entities contex = new Entities())

/// {

/// var userList = contex.Users.ToList();

/// mainGrid.ItemsSource = userList;

/// }

///}

///private void EditUserButton(object sender, RoutedEventArgs e)

///{

/// Users users = mainGrid.SelectedItem as Users;

/// tempUser = users;

/// EditUser editUser = new EditUser();

/// editUser.Show();

///}

///DataUser();

///public void DataUser()

///{

/// loginEditTxt.Text = AdminWindow.tempUser.login;

/// nameEditTxt.Text = AdminWindow.tempUser.name;

///}

///private void EditUserButton(object sender, RoutedEventArgs e)

///{

/// using (Entities contex = new Entities())

/// {

/// var user = contex.Users.Find(AdminWindow.tempUser.id);

/// user.login = loginEditTxt.Text;

/// user.name = nameEditTxt.Text;

/// contex.Entry(user);

/// contex.SaveChanges();

/// }

/// SELECT COUNT(*) AS TotalRows

///FROM Employees;

/// SELECT COUNT(ManagerID) AS TotalManagers

///FROM Employees;

/// SELECT

/// CarID,

/// UsageDate,

/// UsedHours,

/// -- Умножаем на 100.0, чтобы принудительно использовать дробные числа

/// (UsedHours* 100.0 / 24.0) AS LoadPercentage

///FROM CarUsage;