通过

LicenseProvider 类

定义

命名空间:
System.ComponentModel
程序集:
netstandard.dll, System.ComponentModel.TypeConverter.dll
程序集:
System.ComponentModel.TypeConverter.dll
程序集:
System.dll
程序集:
netstandard.dll
Source:
LicenseProvider.cs
Source:
LicenseProvider.cs

abstract提供用于实现许可证提供程序的基类。

public ref class LicenseProvider abstract
public abstract class LicenseProvider
type LicenseProvider = class
Public MustInherit Class LicenseProvider
继承
Object
LicenseProvider
派生

示例

下面的代码示例使用 Validate 该方法创建许可的控件。 它使用由类实现的LicFileLicenseProvider一个LicenseProvider。

// Adds the LicenseProviderAttribute to the control.

[LicenseProvider(LicFileLicenseProvider::typeid)]
public ref class MyControl: public Control
{
   // Creates a new, null license.
private:
   License^ license;

public:
   MyControl()
   {
      
      // Adds Validate to the control's constructor.
      license = LicenseManager::Validate( MyControl::typeid, this );

      // Insert code to perform other instance creation tasks here.
   }

public:
   ~MyControl()
   {
      if ( license != nullptr )
      {
         delete license;
         license = nullptr;
      }
   }
};

using System.ComponentModel;
using System.Windows.Forms;

// Adds the LicenseProviderAttribute to the control.
[LicenseProvider(typeof(LicFileLicenseProvider))]
public class MyControl : Control
{
    // Creates a new, null license.
    License license;

    public MyControl()
    {
        // Adds Validate to the control's constructor.
        license = LicenseManager.Validate(typeof(MyControl), this);

        // Insert code to perform other instance creation tasks here.
    }

    protected override void Dispose(bool disposing)
    {
        if (disposing)
        {
            if (license != null)
            {
                license.Dispose();
                license = null;
            }
        }
    }
}

Imports System.ComponentModel
Imports System.Windows.Forms

' Adds the LicenseProviderAttribute to the control.
<LicenseProvider(GetType(LicFileLicenseProvider))> _
Public Class MyControl
    Inherits Control
    
    ' Creates a new, null license.
    Private license As License = Nothing    
    
    Public Sub New()        
    
        ' Adds Validate to the control's constructor.
        license = LicenseManager.Validate(GetType(MyControl), Me)

        ' Insert code to perform other instance creation tasks here.
        
    End Sub
    
    Protected Overrides Sub Dispose(ByVal disposing As Boolean)

        If disposing Then
            If (license IsNot Nothing) Then
                license.Dispose()
                license = Nothing
            End If
        End If

    End Sub    
    
End Class

实施者说明

从 LicenseProvider中继承时，必须重写 GetLicense(LicenseContext, Type, Object, Boolean) 该方法。

请参阅 LicFileLicenseProvider 此类的实现。

构造函数

名称 说明
LicenseProvider()

初始化 LicenseProvider 类的新实例。

方法

名称 说明
Equals(Object)

确定指定对象是否等于当前对象。

(继承自 Object)
GetHashCode()

用作默认哈希函数。

(继承自 Object)
GetLicense(LicenseContext, Type, Object, Boolean)

在派生类中重写时，当给定上下文以及拒绝许可证是否引发异常时，获取实例或组件类型的许可证。
GetType()

获取当前实例的 Type。

(继承自 Object)
MemberwiseClone()

创建当前 Object的浅表副本。

(继承自 Object)
ToString()

返回一个表示当前对象的字符串。

(继承自 Object)

适用于

另请参阅