Regex.UseOptionR 方法
重要
一些信息与预发行产品相关，相应产品在发行之前可能会进行重大修改。 对于此处提供的信息，Microsoft 不作任何明示或暗示的担保。
注意
This API supports obsolete mechanisms for Regex extensibility. It is not supported.
由 CompileToAssembly 方法生成的 Regex 对象使用。
protected public:
bool UseOptionR();protected:
bool UseOptionR();C#
protected internal bool UseOptionR();C#
[System.Obsolete("This API supports obsolete mechanisms for Regex extensibility. It is not supported.", DiagnosticId="SYSLIB0052", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]
protected bool UseOptionR();C#
protected bool UseOptionR();member this.UseOptionR : unit -> bool[<System.Obsolete("This API supports obsolete mechanisms for Regex extensibility. It is not supported.", DiagnosticId="SYSLIB0052", UrlFormat="https://aka.ms/dotnet-warnings/{0}")>]
member this.UseOptionR : unit -> boolProtected Friend Function UseOptionR () As BooleanProtected Function UseOptionR () As Boolean如果 Options 属性包含 RightToLeft 选项，则为 true；否则为 false。
- 属性
| 产品 | 版本 （已过时） |
|---|---|
| .NET | Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7 (8, 9) |
| .NET Framework | 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
| .NET Standard | 2.0, 2.1 |
