TimeZoneInfo.AdjustmentRule.Equals 方法

定義

命名空間:

System

組件:

System.Runtime.dll

多載

Equals(Object)	指出目前的實例是否等於另一個實例。
Equals(TimeZoneInfo+AdjustmentRule)	判斷目前 TimeZoneInfo.AdjustmentRule 物件是否等於第二個 TimeZoneInfo.AdjustmentRule 物件。

Equals(Object)

來源:

TimeZoneInfo.AdjustmentRule.cs

指出目前的實例是否等於另一個實例。

public:
 override bool Equals(System::Object ^ obj);

public override bool Equals (object? obj);

override this.Equals : obj -> bool

Public Overrides Function Equals (obj As Object) As Boolean

參數

obj

Object

要與此實例比較的實例。

傳回

Boolean

true 如果目前的實例等於其他實例，則為 ;否則為 false 。

Equals(TimeZoneInfo+AdjustmentRule)

來源:

TimeZoneInfo.AdjustmentRule.cs

判斷目前 TimeZoneInfo.AdjustmentRule 物件是否等於第二個 TimeZoneInfo.AdjustmentRule 物件。

public:
 virtual bool Equals(TimeZoneInfo::AdjustmentRule ^ other);

public bool Equals (TimeZoneInfo.AdjustmentRule? other);

override this.Equals : TimeZoneInfo.AdjustmentRule -> bool

Public Function Equals (other As TimeZoneInfo.AdjustmentRule) As Boolean

參數

other

TimeZoneInfo.AdjustmentRule

要與目前物件比較的物件。

傳回

Boolean

如果兩個 TimeZoneInfo.AdjustmentRule 物件具有相等值，則為 true；否則為 false。

實作

Equals(T)

範例

下列範例會呼叫 TimeZoneInfo.AdjustmentRule.Equals(TimeZoneInfo+AdjustmentRule) 方法來比較中部標準時間的調整規則與加拿大中部標準時間和墨西哥標準時間的調整規則。

   string timeZoneName = "";
   // Get CST, Canadian CST, and Mexican CST adjustment rules
   TimeZoneInfo.AdjustmentRule[] usCstAdjustments = null;
   TimeZoneInfo.AdjustmentRule[] canCstAdjustments = null;
   TimeZoneInfo.AdjustmentRule[] mexCstAdjustments = null;
   try
   {
      timeZoneName = "Central Standard Time";
      usCstAdjustments = TimeZoneInfo.FindSystemTimeZoneById(timeZoneName).GetAdjustmentRules();
   }
   catch (TimeZoneNotFoundException)
   {
      Console.WriteLine("The {0} time zone is not defined in the registry.", 
                        timeZoneName);
   }                           
   catch (InvalidTimeZoneException)
   {
      Console.WriteLine("Data for the {0} time zone is invalid.", 
                        timeZoneName);
   }
   try
   {
      timeZoneName = "Canada Central Standard Time";
      canCstAdjustments = TimeZoneInfo.FindSystemTimeZoneById(timeZoneName).GetAdjustmentRules();
   }
   catch (TimeZoneNotFoundException)
   {
      Console.WriteLine("The {0} time zone is not defined in the registry.", 
                        timeZoneName);
   }                           
   catch (InvalidTimeZoneException)
   {
      Console.WriteLine("Data for the {0} time zone is invalid.", 
                        timeZoneName);
   }
   try
   {
      timeZoneName = "Central Standard Time (Mexico)";
      mexCstAdjustments = TimeZoneInfo.FindSystemTimeZoneById(timeZoneName).GetAdjustmentRules();
   }   
   catch (TimeZoneNotFoundException)
   {
      Console.WriteLine("The {0} time zone is not defined in the registry.", 
                        timeZoneName);
   }                           
   catch (InvalidTimeZoneException)
   {
      Console.WriteLine("Data for the {0} time zone is invalid.", 
                        timeZoneName);
   }
   // Determine if CST and other time zones have the same rules
   foreach(TimeZoneInfo.AdjustmentRule rule in usCstAdjustments)
   {
      Console.WriteLine("Comparing Central Standard Time rule for {0:d} to {1:d} with:", 
                        rule.DateStart, rule.DateEnd);
      // Compare with Canada Central Standard Time
      if (canCstAdjustments.Length == 0)
      {
         Console.WriteLine("   Canada Central Standard Time has no adjustment rules.");
      }   
      else
      {
         foreach (TimeZoneInfo.AdjustmentRule canRule in canCstAdjustments)
         {
            Console.WriteLine("   Canadian CST for {0:d} to {1:d}: {2}", 
                              canRule.DateStart, canRule.DateEnd, 
                              rule.Equals(canRule) ? "Equal" : "Not Equal");
         }              
      }          

      // Compare with Mexico Central Standard Time
      if (mexCstAdjustments.Length == 0)
      {
         Console.WriteLine("   Mexican Central Standard Time has no adjustment rules.");
      }
      else
      {
         foreach (TimeZoneInfo.AdjustmentRule mexRule in mexCstAdjustments)
         {
            Console.WriteLine("   Mexican CST for {0:d} to {1:d}: {2}", 
                              mexRule.DateStart, mexRule.DateEnd, 
                              rule.Equals(mexRule) ? "Equal" : "Not Equal");
         }              
      }
   }   
   // This code displays the following output to the console:
   // 
   // Comparing Central Standard Time rule for 1/1/0001 to 12/31/9999 with:
   //    Canada Central Standard Time has no adjustment rules.
   //    Mexican CST for 1/1/0001 to 12/31/9999: Equal

// Get CST, Canadian CST, and Mexican CST adjustment rules
let usCstAdjustments =
    let timeZoneName = "Central Standard Time"
    try
        TimeZoneInfo.FindSystemTimeZoneById(timeZoneName).GetAdjustmentRules()
    with
    | :? TimeZoneNotFoundException ->
        printfn $"The {timeZoneName} time zone is not defined in the registry."
        null
    | :? InvalidTimeZoneException ->
        printfn $"Data for the {timeZoneName} time zone is invalid."
        null
let canCstAdjustments = 
    let timeZoneName = "Canada Central Standard Time"
    try
        TimeZoneInfo.FindSystemTimeZoneById(timeZoneName).GetAdjustmentRules()
    with
    | :? TimeZoneNotFoundException ->
        printfn $"The {timeZoneName} time zone is not defined in the registry."
        null
    | :? InvalidTimeZoneException ->
        printfn $"Data for the {timeZoneName} time zone is invalid."
        null
let mexCstAdjustments = 
    let timeZoneName = "Central Standard Time (Mexico)"
    try
        TimeZoneInfo.FindSystemTimeZoneById(timeZoneName).GetAdjustmentRules()
    with
    | :? TimeZoneNotFoundException ->
        printfn $"The {timeZoneName} time zone is not defined in the registry."
        null
    | :? InvalidTimeZoneException ->
        printfn $"Data for the {timeZoneName} time zone is invalid."
        null
// Determine if CST and other time zones have the same rules
for rule in usCstAdjustments do
    printfn $"Comparing Central Standard Time rule for {rule.DateStart:d} to {rule.DateEnd:d} with:"
    // Compare with Canada Central Standard Time
    if canCstAdjustments.Length = 0 then
        printfn "   Canada Central Standard Time has no adjustment rules."
    else
        for canRule in canCstAdjustments do
            printfn $"""   Canadian CST for {canRule.DateStart:d} to {canRule.DateEnd:d}: {if rule.Equals canRule then "Equal" else "Not Equal"}"""

    // Compare with Mexico Central Standard Time
    if mexCstAdjustments.Length = 0 then
        printfn "   Mexican Central Standard Time has no adjustment rules."
    else
        for mexRule in mexCstAdjustments do
            printfn $"""   Mexican CST for {mexRule.DateStart:d} to {mexRule.DateEnd:d}: {if rule.Equals mexRule then "Equal" else "Not Equal"}"""
// This code displays the following output to the console:
// 
// Comparing Central Standard Time rule for 1/1/0001 to 12/31/9999 with:
//    Canada Central Standard Time has no adjustment rules.
//    Mexican CST for 1/1/0001 to 12/31/9999: Equal

   Dim timeZoneName As String = String.Empty
   ' Get CST, Canadian CST, and Mexican CST adjustment rules
   Dim usCstAdjustments(), canCstAdjustments(), mexCstAdjustments() As TimeZoneInfo.AdjustmentRule
   Try
      timeZoneName = "Central Standard Time"
      usCstAdjustments = TimeZoneInfo.FindSystemTimeZoneById(timeZoneName).GetAdjustmentRules
   Catch e As TimeZoneNotFoundException
      Console.WriteLine("The {0} time zone is not defined in the registry.", timeZoneName)
   Catch e As InvalidTimeZoneException
      Console.WriteLine("Data for the {0} time zone is invalid.", timeZoneName)
   End Try
   Try
      timeZoneName = "Canada Central Standard Time"
      canCstAdjustments = TimeZoneInfo.FindSystemTimeZoneById(timeZoneName).GetAdjustmentRules
   Catch e As TimeZoneNotFoundException
      Console.WriteLine("The {0} time zone is not defined in the registry.", timeZoneName)
   Catch e As InvalidTimeZoneException
      Console.WriteLine("Data for the {0} time zone is invalid.", timeZoneName)
   End Try
   Try
      timeZoneName = "Central Standard Time (Mexico)"
      mexCstAdjustments = TimeZoneInfo.FindSystemTimeZoneById(timeZoneName).GetAdjustmentRules
   Catch e As TimeZoneNotFoundException
      Console.WriteLine("The {0} time zone is not defined in the registry.", timeZoneName)
   Catch e As InvalidTimeZoneException
      Console.WriteLine("Data for the {0} time zone is invalid.", timeZoneName)
   End Try
   ' Determine if CST and other time zones have the same rules
   For Each rule As TimeZoneInfo.AdjustmentRule In usCstAdjustments
      Console.WriteLine("Comparing Central Standard Time rule for {0:d} to {1:d} with:", _
                        rule.DateStart, rule.DateEnd)
      ' Compare with Canada Central Standard Time
      If canCstAdjustments.Length = 0 Then
         Console.WriteLine("   Canada Central Standard Time has no adjustment rules.")
      Else
         For Each canRule As TimeZoneInfo.AdjustmentRule In canCstAdjustments
            Console.WriteLine("   Canadian CST for {0:d} to {1:d}: {2}", _
                              canRule.DateStart, canRule.DateEnd, _
                              IIf(rule.Equals(canRule), "Equal", "Not Equal"))
         Next              
      End If          

      ' Compare with Mexico Central Standard Time
      If mexCstAdjustments.Length = 0 Then
         Console.WriteLine("   Mexican Central Standard Time has no adjustment rules.")
      Else
         For Each mexRule As TimeZoneInfo.AdjustmentRule In mexCstAdjustments
            Console.WriteLine("   Mexican CST for {0:d} to {1:d}: {2}", _
                              mexRule.DateStart, mexRule.DateEnd, _
                              IIf(rule.Equals(mexRule), "Equal", "Not Equal"))
         Next              
      End If
   Next   
   ' This code displays the following output to the console:
   ' 
   ' Comparing Central Standard Time rule for 1/1/0001 to 12/31/9999 with:
   '    Canada Central Standard Time has no adjustment rules.
   '    Mexican CST for 1/1/0001 to 12/31/9999: Equal

此程式碼會顯示主控台的下列輸出：

Comparing Central Standard Time rule for 1/1/0001 to 12/31/9999 with:  
   Canada Central Standard Time has no adjustment rules.  
   Mexican CST for 1/1/0001 to 12/31/9999: Equal  

備註

若要判斷兩個 TimeZoneInfo.AdjustmentRule 物件是否相等， Equals(TimeZoneInfo+AdjustmentRule) 此方法會比較每個物件的成員值。 如果兩個調整規則具有相同的有效日期、相同的差異，以及其 DaylightTransitionStart 和 DaylightTransitionEnd 屬性所傳回之物件的相同值 TimeZoneInfo.TransitionTime ，則兩個調整規則相等。