TimeZoneInfo.AdjustmentRule.Equals 方法

定义

命名空间:

System

程序集:

System.Runtime.dll

重载

Equals(Object)	指示当前实例是否等于另一个实例。
Equals(TimeZoneInfo+AdjustmentRule)	确定当前 TimeZoneInfo.AdjustmentRule 对象是否等于第二个 TimeZoneInfo.AdjustmentRule 对象。

Equals(Object)

Source:

TimeZoneInfo.AdjustmentRule.cs

指示当前实例是否等于另一个实例。

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

参数

obj

Object

要与该实例进行比较的 实例。

返回

Boolean

true 如果当前实例等于另一个实例，则为 ;否则为 false。

Equals(TimeZoneInfo+AdjustmentRule)

Source:

TimeZoneInfo.AdjustmentRule.cs

确定当前 TimeZoneInfo.AdjustmentRule 对象是否等于第二个 TimeZoneInfo.AdjustmentRule 对象。

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

参数

other

TimeZoneInfo.AdjustmentRule

要与当前对象进行比较的对象。

返回

Boolean

如果两个 TimeZoneInfo.AdjustmentRule 对象具有相等的值，则为 true；否则为 false。

实现

Equals(T)

示例

以下示例调用 TimeZoneInfo.AdjustmentRule.Equals(TimeZoneInfo+AdjustmentRule) 方法，将中部标准时间的调整规则与加拿大中部标准时间和墨西哥标准时间的调整规则进行比较。

   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

此代码向控制台显示以下输出：

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  

注解

为了确定两个 TimeZoneInfo.AdjustmentRule 对象是否相等， Equals(TimeZoneInfo+AdjustmentRule) 方法比较每个对象的成员值。 如果两个调整规则对其 和 DaylightTransitionEnd 属性返回的对象具有相同的生效日期、相同的增量和相同的值TimeZoneInfo.TransitionTime，则两DaylightTransitionStart个调整规则相等。