Console.CursorTop 属性

定义

命名空间:

System

程序集:

System.Console.dll

Source:

Console.cs

获取或设置光标在缓冲区中的行位置。

public:
 static property int CursorTop { int get(); void set(int value); };

[System.Runtime.Versioning.UnsupportedOSPlatform("browser")]
[System.Runtime.Versioning.UnsupportedOSPlatform("android")]
[System.Runtime.Versioning.UnsupportedOSPlatform("ios")]
[System.Runtime.Versioning.UnsupportedOSPlatform("tvos")]
public static int CursorTop { get; set; }

[<System.Runtime.Versioning.UnsupportedOSPlatform("browser")>]
[<System.Runtime.Versioning.UnsupportedOSPlatform("android")>]
[<System.Runtime.Versioning.UnsupportedOSPlatform("ios")>]
[<System.Runtime.Versioning.UnsupportedOSPlatform("tvos")>]
static member CursorTop : int with get, set

Public Shared Property CursorTop As Integer

属性值

Int32

光标的当前位置，以行为单位。

属性

UnsupportedOSPlatformAttribute

例外

ArgumentOutOfRangeException

集运算中的值小于零。

- 或 -

集运算中的值大于或等于 BufferHeight。

SecurityException

用户没有执行此操作的权限。

IOException

出现 I/O 错误。

示例

此示例演示 和 CursorLeftCursorTop 属性以及 SetCursorPosition 和 Clear 方法。 该示例定位光标（确定下一次写入的位置），以使用“+”、“|”和“-”字符串的组合绘制一个 5 字符乘以 5 个字符的矩形。 请注意，可以使用其他字符串的组合以更少的步骤绘制矩形。

// This example demonstrates the 
//     Console.CursorLeft and 
//     Console.CursorTop properties, and the
//     Console.SetCursorPosition and 
//     Console.Clear methods.
using namespace System;
int origRow;
int origCol;
void WriteAt( String^ s, int x, int y )
{
   try
   {
      Console::SetCursorPosition( origCol + x, origRow + y );
      Console::Write( s );
   }
   catch ( ArgumentOutOfRangeException^ e ) 
   {
      Console::Clear();
      Console::WriteLine( e->Message );
   }

}

int main()
{
   
   // Clear the screen, then save the top and left coordinates.
   Console::Clear();
   origRow = Console::CursorTop;
   origCol = Console::CursorLeft;
   
   // Draw the left side of a 5x5 rectangle, from top to bottom.
   WriteAt( "+", 0, 0 );
   WriteAt( "|", 0, 1 );
   WriteAt( "|", 0, 2 );
   WriteAt( "|", 0, 3 );
   WriteAt( "+", 0, 4 );
   
   // Draw the bottom side, from left to right.
   WriteAt( "-", 1, 4 ); // shortcut: WriteAt("---", 1, 4)
   WriteAt( "-", 2, 4 ); // ...
   WriteAt( "-", 3, 4 ); // ...
   WriteAt( "+", 4, 4 );
   
   // Draw the right side, from bottom to top.
   WriteAt( "|", 4, 3 );
   WriteAt( "|", 4, 2 );
   WriteAt( "|", 4, 1 );
   WriteAt( "+", 4, 0 );
   
   // Draw the top side, from right to left.
   WriteAt( "-", 3, 0 ); // shortcut: WriteAt("---", 1, 0)
   WriteAt( "-", 2, 0 ); // ...
   WriteAt( "-", 1, 0 ); // ...
   
   //
   WriteAt( "All done!", 0, 6 );
   Console::WriteLine();
}

/*
This example produces the following results:

+---+
|   |
|   |
|   |
+---+

All done!

*/

// This example demonstrates the
//     Console.CursorLeft and
//     Console.CursorTop properties, and the
//     Console.SetCursorPosition and
//     Console.Clear methods.
using System;

class Sample
{
    protected static int origRow;
    protected static int origCol;

    protected static void WriteAt(string s, int x, int y)
    {
    try
        {
        Console.SetCursorPosition(origCol+x, origRow+y);
        Console.Write(s);
        }
    catch (ArgumentOutOfRangeException e)
        {
        Console.Clear();
        Console.WriteLine(e.Message);
        }
    }

    public static void Main()
    {
// Clear the screen, then save the top and left coordinates.
    Console.Clear();
    origRow = Console.CursorTop;
    origCol = Console.CursorLeft;

// Draw the left side of a 5x5 rectangle, from top to bottom.
    WriteAt("+", 0, 0);
    WriteAt("|", 0, 1);
    WriteAt("|", 0, 2);
    WriteAt("|", 0, 3);
    WriteAt("+", 0, 4);

// Draw the bottom side, from left to right.
    WriteAt("-", 1, 4); // shortcut: WriteAt("---", 1, 4)
    WriteAt("-", 2, 4); // ...
    WriteAt("-", 3, 4); // ...
    WriteAt("+", 4, 4);

// Draw the right side, from bottom to top.
    WriteAt("|", 4, 3);
    WriteAt("|", 4, 2);
    WriteAt("|", 4, 1);
    WriteAt("+", 4, 0);

// Draw the top side, from right to left.
    WriteAt("-", 3, 0); // shortcut: WriteAt("---", 1, 0)
    WriteAt("-", 2, 0); // ...
    WriteAt("-", 1, 0); // ...
//
    WriteAt("All done!", 0, 6);
    Console.WriteLine();
    }
}
/*
This example produces the following results:

+---+
|   |
|   |
|   |
+---+

All done!

*/

// This example demonstrates the
//     Console.CursorLeft and
//     Console.CursorTop properties, and the
//     Console.SetCursorPosition and
//     Console.Clear methods.
open System

// Clear the screen, then save the top and left coordinates.
Console.Clear()
let origRow = Console.CursorTop
let origCol = Console.CursorLeft

let writeAt s x y =
    try
        Console.SetCursorPosition(origCol + x, origRow + y)
        printfn $"%s{s}"
    with :? ArgumentOutOfRangeException as e ->
        Console.Clear()
        printfn $"{e.Message}"

// Draw the left side of a 5x5 rectangle, from top to bottom.
writeAt "+" 0 0
writeAt "|" 0 1
writeAt "|" 0 2
writeAt "|" 0 3
writeAt "+" 0 4

// Draw the bottom side, from left to right.
writeAt "-" 1 4 // shortcut: writeAt "---", 1, 4)
writeAt "-" 2 4 // ...
writeAt "-" 3 4 // ...
writeAt "+" 4 4

// Draw the right side, from bottom to top.
writeAt "|" 4 3
writeAt "|" 4 2
writeAt "|" 4 1
writeAt "+" 4 0

// Draw the top side, from right to left.
writeAt "-" 3 0 // shortcut: writeAt "---", 1, 0)
writeAt "-" 2 0 // ...
writeAt "-" 1 0 // ...

writeAt "All done!" 0 6
printfn ""


// This example produces the following results:
//
// +---+
// |   |
// |   |
// |   |
// +---+
//
// All done!

' This example demonstrates the 
'     Console.CursorLeft and 
'     Console.CursorTop properties, and the
'     Console.SetCursorPosition and 
'     Console.Clear methods.
Class Sample
   Protected Shared origRow As Integer
   Protected Shared origCol As Integer
   
   Protected Shared Sub WriteAt(s As String, x As Integer, y As Integer)
      Try
         Console.SetCursorPosition(origCol + x, origRow + y)
         Console.Write(s)
      Catch e As ArgumentOutOfRangeException
         Console.Clear()
         Console.WriteLine(e.Message)
      End Try
   End Sub
   
   Public Shared Sub Main()
      ' Clear the screen, then save the top and left coordinates.
      Console.Clear()
      origRow = Console.CursorTop
      origCol = Console.CursorLeft
      
      ' Draw the left side of a 5x5 rectangle, from top to bottom.
      WriteAt("+", 0, 0)
      WriteAt("|", 0, 1)
      WriteAt("|", 0, 2)
      WriteAt("|", 0, 3)
      WriteAt("+", 0, 4)
      
      ' Draw the bottom side, from left to right.
      WriteAt("-", 1, 4) ' shortcut: WriteAt("---", 1, 4)
      WriteAt("-", 2, 4) ' ...
      WriteAt("-", 3, 4) ' ...
      WriteAt("+", 4, 4)
      
      ' Draw the right side, from bottom to top.
      WriteAt("|", 4, 3)
      WriteAt("|", 4, 2)
      WriteAt("|", 4, 1)
      WriteAt("+", 4, 0)
      
      ' Draw the top side, from right to left.
      WriteAt("-", 3, 0) ' shortcut: WriteAt("---", 1, 0)
      WriteAt("-", 2, 0) ' ...
      WriteAt("-", 1, 0) ' ...
      '
      WriteAt("All done!", 0, 6)
      Console.WriteLine()
   End Sub
End Class
'
'This example produces the following results:
'
'+---+
'|   |
'|   |
'|   |
'+---+
'
'All done!
'