Cross Platform Terminal UI toolkit for .NET
// A simple Terminal.Gui example in C# - using C# 9.0 Top-level statements
// This is a simple example application. For the full range of functionality
// see the UICatalog project
using Terminal.Gui.App;
using Terminal.Gui.Configuration;
using Terminal.Gui.ViewBase;
using Terminal.Gui.Views;
using Terminal.Gui.Input;
// Override the default configuration for the application to use the Amber Phosphor theme
ConfigurationManager.RuntimeConfig = """{ "Theme": "Amber Phosphor" }""";
ConfigurationManager.Enable (ConfigLocations.All);
IApplication app = Application.Create ().Init ();
var userName = app.Run<ExampleWindow> ().GetResult<string> ();
app.Dispose ();
// To see this output on the screen it must be done after Dispose,
// which restores the previous screen.
if (string.IsNullOrEmpty (userName))
{
Console.WriteLine (@"Login cancelled");
}
else
Console.WriteLine ($@"Username: {userName}");
// Defines a top-level window with border and title
public sealed class ExampleWindow : Runnable<string?>
public ExampleWindow ()
Title = $"Example App ({Application.GetDefaultKey (Command.Quit)} to quit)";
// Create input components and labels
var usernameLabel = new Label { Text = "Username:" };
var userNameText = new TextField
// Position text field adjacent to the label
X = Pos.Right (usernameLabel) + 1,
// Fill remaining horizontal space
Width = Dim.Fill ()
};
var passwordLabel = new Label { Text = "Password:", X = Pos.Left (usernameLabel), Y = Pos.Bottom (usernameLabel) + 1 };
var passwordText = new TextField
Secret = true,
// align with the text box above
X = Pos.Left (userNameText),
Y = Pos.Top (passwordLabel),
// Create login button
var btnLogin = new Button
Text = "Login",
Y = Pos.Bottom (passwordLabel) + 1,
// center the login button horizontally
X = Pos.Center (),
IsDefault = true
// When login button is clicked display a message popup
btnLogin.Accepting += (s, e) =>
if (userNameText.Text == "admin" && passwordText.Text == "password")
MessageBox.Query (App!, "Logging In", "Login Successful", "Ok");
Result = userNameText.Text;
App!.RequestStop ();
MessageBox.ErrorQuery ((s as View)?.App!, "Logging In", "Incorrect username or password", "Ok");
// When Accepting is handled, set e.Handled to true to prevent further processing.
e.Handled = true;
// Add the views to the Window
Add (usernameLabel, userNameText, passwordLabel, passwordText, btnLogin);
