TimeSpan.GetHashCode Method

[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]

Returns a hash code for this instance.

Namespace: System
Assembly: mscorlib (in mscorlib.dll)

Syntax

Public Overrides Function GetHashCode As Integer
public override int GetHashCode()

Return Value

Type: System..::.Int32
A 32-bit signed integer hash code.

Remarks

Two TimeSpan objects might have the same hash code even though they represent different time values.

Examples

The following code example generates the hash codes of several TimeSpan objects using the GetHashCode method.

' Example for the TimeSpan.GetHashCode( ) method.

Module Example
   Sub DisplayHashCode(ByVal outputBlock As System.Windows.Controls.TextBlock, ByVal interval As TimeSpan)

      ' Create a hash code and a string representation of 
      ' the TimeSpan parameter.
      Dim timeInterval As String = interval.ToString()
      Dim hashCode As Integer = interval.GetHashCode()

      ' Pad the end of the TimeSpan string with spaces if it 
      ' does not contain milliseconds.
      Dim pIndex As Integer = timeInterval.IndexOf(":"c)
      pIndex = timeInterval.IndexOf("."c, pIndex)
      If pIndex < 0 Then timeInterval &= "        "

      outputBlock.Text &= String.Format("{0,22}   0x{1:X8}, {1}", _
          timeInterval, hashCode) & vbCrLf
   End Sub

   Public Sub Demo(ByVal outputBlock As System.Windows.Controls.TextBlock)
      outputBlock.Text &= String.Format( _
          "This example of TimeSpan.Example( ) generates " & _
          "the following " & vbCrLf & "output, which displays " & _
          "the hash codes of representative TimeSpan " & vbCrLf & _
          "objects in hexadecimal and decimal formats." & vbCrLf) & vbCrLf
      outputBlock.Text &= String.Format("{0,22}   {1,10}", _
          "TimeSpan        ", "Hash Code") & vbCrLf
      outputBlock.Text &= String.Format("{0,22}   {1,10}", _
          "--------        ", "---------") & vbCrLf

      DisplayHashCode(outputBlock, New TimeSpan(0))
      DisplayHashCode(outputBlock, New TimeSpan(1))
      DisplayHashCode(outputBlock, New TimeSpan(0, 0, 0, 0, 1))
      DisplayHashCode(outputBlock, New TimeSpan(0, 0, 1))
      DisplayHashCode(outputBlock, New TimeSpan(0, 1, 0))
      DisplayHashCode(outputBlock, New TimeSpan(1, 0, 0))
      DisplayHashCode(outputBlock, New TimeSpan(36000000001))
      DisplayHashCode(outputBlock, New TimeSpan(0, 1, 0, 0, 1))
      DisplayHashCode(outputBlock, New TimeSpan(1, 0, 1))
      DisplayHashCode(outputBlock, New TimeSpan(1, 0, 0, 0))
      DisplayHashCode(outputBlock, New TimeSpan(864000000001))
      DisplayHashCode(outputBlock, New TimeSpan(1, 0, 0, 0, 1))
      DisplayHashCode(outputBlock, New TimeSpan(1, 0, 0, 1))
      DisplayHashCode(outputBlock, New TimeSpan(100, 0, 0, 0))
      DisplayHashCode(outputBlock, New TimeSpan(100, 0, 0, 0, 1))
      DisplayHashCode(outputBlock, New TimeSpan(100, 0, 0, 1))
   End Sub
End Module

' This example of TimeSpan.GetHashCode( ) generates the following
' output, which displays the hash codes of representative TimeSpan
' objects in hexadecimal and decimal formats.
' 
'       TimeSpan            Hash Code
'       --------            ---------
'       00:00:00           0x00000000, 0
'       00:00:00.0000001   0x00000001, 1
'       00:00:00.0010000   0x00002710, 10000
'       00:00:01           0x00989680, 10000000
'       00:01:00           0x23C34600, 600000000
'       01:00:00           0x61C46808, 1640261640
'       01:00:00.0000001   0x61C46809, 1640261641
'       01:00:00.0010000   0x61C48F18, 1640271640
'       01:00:01           0x625CFE88, 1650261640
'     1.00:00:00           0x2A69C0C9, 711573705
'     1.00:00:00.0000001   0x2A69C0C8, 711573704
'     1.00:00:00.0010000   0x2A69E7D9, 711583705
'     1.00:00:01           0x2B025649, 721573449
'   100.00:00:00           0x914F4E94, -1857073516
'   100.00:00:00.0010000   0x914F6984, -1857066620
'   100.00:00:01           0x91E7D814, -1847076844
// Example for the TimeSpan.GetHashCode( ) method.
using System;

class Example
{
   static void DisplayHashCode(System.Windows.Controls.TextBlock outputBlock, TimeSpan interval)
   {
      // Create a hash code and a string representation of 
      // the TimeSpan parameter.
      string timeInterval = interval.ToString();
      int hashCode = interval.GetHashCode();

      // Pad the end of the TimeSpan string with spaces if it 
      // does not contain milliseconds.
      int pIndex = timeInterval.IndexOf(':');
      pIndex = timeInterval.IndexOf('.', pIndex);
      if (pIndex < 0) timeInterval += "        ";

      outputBlock.Text += String.Format("{0,22}   0x{1:X8}, {1}",
          timeInterval, hashCode) + "\n";
   }

   public static void Demo(System.Windows.Controls.TextBlock outputBlock)
   {
      outputBlock.Text += String.Format(
          "This example of TimeSpan.Example( ) generates " +
          "the following \noutput, which displays " +
          "the hash codes of representative TimeSpan \n" +
          "objects in hexadecimal and decimal formats.\n") + "\n";
      outputBlock.Text += String.Format("{0,22}   {1,10}",
          "TimeSpan        ", "Hash Code") + "\n";
      outputBlock.Text += String.Format("{0,22}   {1,10}",
          "--------        ", "---------") + "\n";

      DisplayHashCode(outputBlock, new TimeSpan(0));
      DisplayHashCode(outputBlock, new TimeSpan(1));
      DisplayHashCode(outputBlock, new TimeSpan(0, 0, 0, 0, 1));
      DisplayHashCode(outputBlock, new TimeSpan(0, 0, 1));
      DisplayHashCode(outputBlock, new TimeSpan(0, 1, 0));
      DisplayHashCode(outputBlock, new TimeSpan(1, 0, 0));
      DisplayHashCode(outputBlock, new TimeSpan(36000000001));
      DisplayHashCode(outputBlock, new TimeSpan(0, 1, 0, 0, 1));
      DisplayHashCode(outputBlock, new TimeSpan(1, 0, 1));
      DisplayHashCode(outputBlock, new TimeSpan(1, 0, 0, 0));
      DisplayHashCode(outputBlock, new TimeSpan(864000000001));
      DisplayHashCode(outputBlock, new TimeSpan(1, 0, 0, 0, 1));
      DisplayHashCode(outputBlock, new TimeSpan(1, 0, 0, 1));
      DisplayHashCode(outputBlock, new TimeSpan(100, 0, 0, 0));
      DisplayHashCode(outputBlock, new TimeSpan(100, 0, 0, 0, 1));
      DisplayHashCode(outputBlock, new TimeSpan(100, 0, 0, 1));
   }
}

/*
This example of TimeSpan.GetHashCode( ) generates the following
output, which displays the hash codes of representative TimeSpan
objects in hexadecimal and decimal formats.

      TimeSpan            Hash Code
      --------            ---------
      00:00:00           0x00000000, 0
      00:00:00.0000001   0x00000001, 1
      00:00:00.0010000   0x00002710, 10000
      00:00:01           0x00989680, 10000000
      00:01:00           0x23C34600, 600000000
      01:00:00           0x61C46808, 1640261640
      01:00:00.0000001   0x61C46809, 1640261641
      01:00:00.0010000   0x61C48F18, 1640271640
      01:00:01           0x625CFE88, 1650261640
    1.00:00:00           0x2A69C0C9, 711573705
    1.00:00:00.0000001   0x2A69C0C8, 711573704
    1.00:00:00.0010000   0x2A69E7D9, 711583705
    1.00:00:01           0x2B025649, 721573449
  100.00:00:00           0x914F4E94, -1857073516
  100.00:00:00.0010000   0x914F6984, -1857066620
  100.00:00:01           0x91E7D814, -1847076844
*/

Version Information

Windows Phone OS

Supported in: 8.1, 8.0, 7.1, 7.0

Platforms

Windows Phone

See Also

Reference

TimeSpan Structure

System Namespace