鉴于我当前的enum
:
Add-Type -TypeDefinition @"
[System.Flags]
public enum FlagsEnum {
None = 0,
SummaryInfo = 1,
ReportOptions = 2,
ParameterFields = 4
}
"@
有没有办法创建一个将所有位设置为1的条目?此语法会导致错误:
Add-Type -TypeDefinition @"
[System.Flags]
public enum FlagsEnum {
None = 0,
SummaryInfo = 1,
ReportOptions = 2,
ParameterFields = 4,
All = (SummaryInfo -bor ReportOptions -bor ParameterFields)
}
"@
**编辑**
更改声明:
Add-Type -TypeDefinition @"
[System.Flags]
public enum FlagsEnum {
None = 0,
SummaryInfo = 1,
ReportOptions = 2,
ParameterFields = 4,
All = (SummaryInfo | ReportOptions | ParameterFields)
}
"@
代码:
$flags = [FlagsEnum]::All
if ( $flags -band [FlagsEnum]::SummaryInfo ) { write-host "add SummaryInfo" }
if ( $flags -band [FlagsEnum]::ReportOptions ) { write-host "add ReportOptions" }
if ( $flags -band [FlagsEnum]::ParameterFields ) { write-host "add ParameterFields" }
结果:
Add-Type : Cannot add type. The type name 'FlagsEnum' already exists.
At C:\Documents and Settings\xxx\My Documents\WindowsPowerShell\Scripts\enums.ps1:3 char:9
+ Add-Type <<<< -TypeDefinition @"
+ CategoryInfo : InvalidOperation: (FlagsEnum:String) [Add-Type], Exception
+ FullyQualifiedErrorId : TYPE_ALREADY_EXISTS,Microsoft.PowerShell.Commands.AddTypeCommand
答案 0 :(得分:4)
试试这个:
Add-Type -TypeDefinition @"
[System.Flags]
public enum FlagsEnum {
None = 0,
SummaryInfo = 1,
ReportOptions = 2,
ParameterFields = 4,
All = (SummaryInfo | ReportOptions | ParameterFields)
}
"@
请记住,在这里的doc中,你并没有真正编写PowerShell,而是在编写C#。
根据原始问题的提问者的评论
编辑后代显示的实际错误表明该类型已存在。这是因为早期版本的代码已在同一PowerShell会话中运行。 PowerShell的一个不幸的限制是你不能添加一个类型,调整它然后重新添加它(这使得开发定义自己类型的脚本变得痛苦)。
答案 1 :(得分:3)
您正在定义C#枚举,因此请使用C#运算符,例如:
All = SummaryInfo | ReportOptions | ParameterFields