Console.ForegroundColor Proprietà
Importante
Alcune informazioni sono relative alla release non definitiva del prodotto, che potrebbe subire modifiche significative prima della release definitiva. Microsoft non riconosce alcuna garanzia, espressa o implicita, in merito alle informazioni qui fornite.
Ottiene o imposta il colore di primo piano della console.
public:
static property ConsoleColor ForegroundColor { ConsoleColor get(); void set(ConsoleColor value); };
[System.Runtime.Versioning.UnsupportedOSPlatform("browser")]
public static ConsoleColor ForegroundColor { get; set; }
[System.Runtime.Versioning.UnsupportedOSPlatform("browser")]
[System.Runtime.Versioning.UnsupportedOSPlatform("android")]
[System.Runtime.Versioning.UnsupportedOSPlatform("ios")]
[System.Runtime.Versioning.UnsupportedOSPlatform("tvos")]
public static ConsoleColor ForegroundColor { get; set; }
public static ConsoleColor ForegroundColor { get; set; }
[<System.Runtime.Versioning.UnsupportedOSPlatform("browser")>]
static member ForegroundColor : ConsoleColor with get, set
[<System.Runtime.Versioning.UnsupportedOSPlatform("browser")>]
[<System.Runtime.Versioning.UnsupportedOSPlatform("android")>]
[<System.Runtime.Versioning.UnsupportedOSPlatform("ios")>]
[<System.Runtime.Versioning.UnsupportedOSPlatform("tvos")>]
static member ForegroundColor : ConsoleColor with get, set
static member ForegroundColor : ConsoleColor with get, set
Public Shared Property ForegroundColor As ConsoleColor
Oggetto ConsoleColor che specifica il colore di primo piano della console; vale a dire il colore con cui viene visualizzato ogni carattere. Il colore predefinito è grigio.
- Attributi
Il colore specificato in un'operazione set non è un membro valido di ConsoleColor.
L'utente non ha l'autorizzazione per eseguire questa azione.
Si è verificato un errore di I/O.
Nell'esempio seguente viene verificato se il colore di sfondo della console è nero e, se è, cambia il colore di sfondo in rosso e il colore di primo piano su nero.
using System;
public class Example
{
public static void Main()
{
if (Console.BackgroundColor == ConsoleColor.Black) {
Console.BackgroundColor = ConsoleColor.Red;
Console.ForegroundColor = ConsoleColor.Black;
Console.Clear();
}
}
}
open System
if Console.BackgroundColor = ConsoleColor.Black then
Console.BackgroundColor <- ConsoleColor.Red
Console.ForegroundColor <- ConsoleColor.Black
Console.Clear()
Module Example
Public Sub Main()
If Console.BackgroundColor = ConsoleColor.Black Then
Console.BackgroundColor = ConsoleColor.Red
Console.ForegroundColor = ConsoleColor.Black
Console.Clear()
End If
End Sub
End Module
Nell'esempio seguente vengono salvati i valori dell'enumerazione ConsoleColor in una matrice e vengono archiviati i valori correnti delle BackgroundColor proprietà e ForegroundColor alle variabili. Viene quindi modificato il colore di primo piano in ogni colore dell'enumerazione, ad eccezione del colore corrispondente allo sfondo corrente e viene modificato il colore di sfondo in ogni colore dell'enumerazione ConsoleColorConsoleColor , ad eccezione del colore corrispondente al primo piano corrente. Se il colore di primo piano è uguale al colore di sfondo, il testo non è visibile. Infine, chiama il ResetColor metodo per ripristinare i colori della console originali.
using System;
class Example
{
public static void Main()
{
// Get an array with the values of ConsoleColor enumeration members.
ConsoleColor[] colors = (ConsoleColor[]) ConsoleColor.GetValues(typeof(ConsoleColor));
// Save the current background and foreground colors.
ConsoleColor currentBackground = Console.BackgroundColor;
ConsoleColor currentForeground = Console.ForegroundColor;
// Display all foreground colors except the one that matches the background.
Console.WriteLine("All the foreground colors except {0}, the background color:",
currentBackground);
foreach (var color in colors) {
if (color == currentBackground) continue;
Console.ForegroundColor = color;
Console.WriteLine(" The foreground color is {0}.", color);
}
Console.WriteLine();
// Restore the foreground color.
Console.ForegroundColor = currentForeground;
// Display each background color except the one that matches the current foreground color.
Console.WriteLine("All the background colors except {0}, the foreground color:",
currentForeground);
foreach (var color in colors) {
if (color == currentForeground) continue;
Console.BackgroundColor = color;
Console.WriteLine(" The background color is {0}.", color);
}
// Restore the original console colors.
Console.ResetColor();
Console.WriteLine("\nOriginal colors restored...");
}
}
//The example displays output like the following:
// All the foreground colors except DarkCyan, the background color:
// The foreground color is Black.
// The foreground color is DarkBlue.
// The foreground color is DarkGreen.
// The foreground color is DarkRed.
// The foreground color is DarkMagenta.
// The foreground color is DarkYellow.
// The foreground color is Gray.
// The foreground color is DarkGray.
// The foreground color is Blue.
// The foreground color is Green.
// The foreground color is Cyan.
// The foreground color is Red.
// The foreground color is Magenta.
// The foreground color is Yellow.
// The foreground color is White.
//
// All the background colors except White, the foreground color:
// The background color is Black.
// The background color is DarkBlue.
// The background color is DarkGreen.
// The background color is DarkCyan.
// The background color is DarkRed.
// The background color is DarkMagenta.
// The background color is DarkYellow.
// The background color is Gray.
// The background color is DarkGray.
// The background color is Blue.
// The background color is Green.
// The background color is Cyan.
// The background color is Red.
// The background color is Magenta.
// The background color is Yellow.
//
// Original colors restored...
open System
// Get an array with the values of ConsoleColor enumeration members.
let colors = ConsoleColor.GetValues<ConsoleColor>()
// Save the current background and foreground colors.
let currentBackground = Console.BackgroundColor
let currentForeground = Console.ForegroundColor
// Display all foreground colors except the one that matches the background.
printfn $"All the foreground colors except {currentBackground}, the background color:"
for color in colors do
if color <> currentBackground then
Console.ForegroundColor <- color
printfn $" The foreground color is {color}."
printfn ""
// Restore the foreground color.
Console.ForegroundColor <- currentForeground;
// Display each background color except the one that matches the current foreground color.
printfn $"All the background colors except {currentForeground}, the foreground color:"
for color in colors do
if color <> currentForeground then
Console.BackgroundColor <- color
printfn $" The background color is {color}."
// Restore the original console colors.
Console.ResetColor()
printfn "\nOriginal colors restored..."
//The example displays output like the following:
// All the foreground colors except DarkCyan, the background color:
// The foreground color is Black.
// The foreground color is DarkBlue.
// The foreground color is DarkGreen.
// The foreground color is DarkRed.
// The foreground color is DarkMagenta.
// The foreground color is DarkYellow.
// The foreground color is Gray.
// The foreground color is DarkGray.
// The foreground color is Blue.
// The foreground color is Green.
// The foreground color is Cyan.
// The foreground color is Red.
// The foreground color is Magenta.
// The foreground color is Yellow.
// The foreground color is White.
//
// All the background colors except White, the foreground color:
// The background color is Black.
// The background color is DarkBlue.
// The background color is DarkGreen.
// The background color is DarkCyan.
// The background color is DarkRed.
// The background color is DarkMagenta.
// The background color is DarkYellow.
// The background color is Gray.
// The background color is DarkGray.
// The background color is Blue.
// The background color is Green.
// The background color is Cyan.
// The background color is Red.
// The background color is Magenta.
// The background color is Yellow.
//
// Original colors restored...
Public Module Example
Public Sub Main()
' Get an array with the values of ConsoleColor enumeration members.
Dim colors() As ConsoleColor = ConsoleColor.GetValues(GetType(ConsoleColor))
' Save the current background and foreground colors.
Dim currentBackground As ConsoleColor = Console.BackgroundColor
Dim currentForeground As ConsoleColor = Console.ForegroundColor
' Display all foreground colors except the one that matches the background.
Console.WriteLine("All the foreground colors except {0}, the background color:",
currentBackground)
For Each color In colors
If color = currentBackground Then Continue For
Console.ForegroundColor = color
Console.WriteLine(" The foreground color is {0}.", color)
Next
Console.WriteLine()
' Restore the foreground color.
Console.ForegroundColor = currentForeground
' Display each background color except the one that matches the current foreground color.
Console.WriteLine("All the background colors except {0}, the foreground color:",
currentForeground)
For Each color In colors
If color = currentForeground then Continue For
Console.BackgroundColor = color
Console.WriteLine(" The background color is {0}.", color)
Next
' Restore the original console colors.
Console.ResetColor
Console.WriteLine()
Console.WriteLine("Original colors restored...")
End Sub
End Module
'The example displays output like the following:
' The background color is DarkCyan.
' The background color is DarkRed.
' The background color is DarkMagenta.
' The background color is DarkYellow.
' The background color is Gray.
' The background color is DarkGray.
' The background color is Blue.
' The background color is Green.
' The background color is Cyan.
' The background color is Red.
' The background color is Magenta.
' The background color is Yellow.
'
' Original colors restored...
Un'operazione get per un'applicazione basata su Windows, in cui una console non esiste, restituisce Gray.
I sistemi Unix non forniscono alcun meccanismo generale per recuperare i colori della console correnti. A causa di questo, ForegroundColor restituisce (ConsoleColor)-1
fino a quando non viene impostato in modo esplicito (usando il setter).
Prodotto | Versioni |
---|---|
.NET | Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9 |
.NET Framework | 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
.NET Standard | 1.3, 1.4, 1.6, 2.0, 2.1 |
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