IValueSource.TryGetValue(IValueDescriptor, BindingContext, Object) 方法

定义

命名空间:

System.CommandLine.Binding

程序集:

System.CommandLine.dll

从绑定上下文中获取值。 返回值指示是否存在与指定值描述符匹配的值。

public:
 bool TryGetValue(System::CommandLine::Binding::IValueDescriptor ^ valueDescriptor, System::CommandLine::Binding::BindingContext ^ bindingContext, [Runtime::InteropServices::Out] System::Object ^ % boundValue);

public bool TryGetValue (System.CommandLine.Binding.IValueDescriptor valueDescriptor, System.CommandLine.Binding.BindingContext? bindingContext, out object? boundValue);

abstract member TryGetValue : System.CommandLine.Binding.IValueDescriptor * System.CommandLine.Binding.BindingContext * obj -> bool

Public Function TryGetValue (valueDescriptor As IValueDescriptor, bindingContext As BindingContext, ByRef boundValue As Object) As Boolean

参数

valueDescriptor

IValueDescriptor

要绑定的值的描述符。

bindingContext

BindingContext

要从中绑定值的绑定上下文。

boundValue

Object

绑定值。

返回

Boolean

如果找到了匹配值，则为 true；否则为 false。