[int]$number = 8 $number = "12345" # The string is converted to an integer. $number = "Hello" Output 複製 Cannot convert value "Hello" to type "System.Int32". Error: "Input string was not in a correct format." At line:1 char:1 + $number = "Hello" + ~~~ + CategoryInfo :...
the Object to convert from destinationType Type the Type to convert to formatProvider IFormatProvider not used by this TypeConverter. ignoreCase Boolean when set to true, will ignore the case when converting. Returns Object will always return null. Applies to ...
PS> [int]$number=$nullPS>$number0PS> [bool]$boolean=$nullPS>$booleanFalse PS> [string]$string=$nullPS>$string-eq''True 某些类型不能从$null进行有效转换。 这些类型生成错误Cannot convert null to type。 PowerShell PS> [datetime]$date=$nullCannot convert null to type"System.DateTime". At...
允许筛选或选择数组的元素。 该脚本的计算结果必须为与零 (0)、空字符串、$false 或$null 不同的值,以便元素在 Where() 之后显示。 有关布尔计算的详细信息,请参阅 about_Booleans。Where() 方法有一个定义。复制 Where(scriptblock expression[, WhereOperatorSelectionMode mode [, int numberToReturn]]) ...
.Boolean InputObject=True SideIndicator NoteProperty string SideIndicator===Compare-Object-IncludeEqual$a$a-PassThru(Compare-Object-IncludeEqual$a$a-PassThru) |Get-MemberTrue TypeName: System.Boolean Name MemberType Definition --- --- --- CompareTo Method int CompareTo(System.Object obj), int...
You can pipe any object that has aToString()method to this cmdlet. Outputs MatchInfo By default, this cmdlet returns aMatchInfoobject for each match found. Boolean When you use theQuietparameter, this cmdlet returns aBooleanvalue indicating whether the pattern was found. ...
Type:Boolean Position:Named Default value:None Required:False Accept pipeline input:False Accept wildcard characters:False Applies to:Exchange Server 2013, Exchange Server 2016, Exchange Server 2019 -AutoDatabaseMountDial This parameter is reserved for internal Microsoft use. ...
Type:Boolean Position:Named Default value:None Required:False Accept pipeline input:False Accept wildcard characters:False Applies to:Exchange Server 2010, Exchange Server 2013, Exchange Server 2016, Exchange Server 2019 -TargetDatabase The TargetDatabase parameter specifies the mailbox database to whic...
如果是在if ()语句中时使用时,则是返回布尔值Boolean $data = @('red','green','blue') if ( $data -eq 'green' ) { 'Green was found' } if ( $data -ne 'green' ) { 'And green was not found' } 005. -match 匹配数组中的每个元素 ...
如果是在if ()语句中时使用时,则是返回布尔值Boolean $data= @('red','green','blue')if($data-eq'green') {'Green was found'}if($data-ne'green') {'And green was not found'} 005. -match 匹配数组中的每个元素 PS>$servers= @('LAX-SQL-01''LAX-API-01''ATX-SQL-01''ATX-API-01'...