SharedProperty 类

定义

命名空间:

System.EnterpriseServices

程序集:

System.EnterpriseServices.dll

访问共享属性。 此类不能被继承。

public ref class SharedProperty sealed

[System.Runtime.InteropServices.ComVisible(false)]
public sealed class SharedProperty

[<System.Runtime.InteropServices.ComVisible(false)>]
type SharedProperty = class

Public NotInheritable Class SharedProperty

继承

Object

SharedProperty

属性

ComVisibleAttribute

示例

下面的代码示例演示如何创建共享属性，以及如何设置和检索存储在共享属性中的值。

#using <System.EnterpriseServices.dll>

using namespace System;
using namespace System::EnterpriseServices;
using namespace System::Reflection;

[assembly:AssemblyKeyFile("..\\common\\key.snk")];
[assembly:ApplicationName("ReceiptNumberGenerator")];
[assembly:ApplicationActivation(ActivationOption::Library)];

public ref class ReceiptNumberGeneratorClass
{
public:

   // Generates a new receipt number based on the receipt number
   // stored by the Shared Property Manager (SPM)
   int GetNextReceiptNumber()
   {
      bool groupExists;
      bool propertyExists;
      int nextReceiptNumber = 0;
      PropertyLockMode lockMode = PropertyLockMode::SetGet;
      PropertyReleaseMode releaseMode = PropertyReleaseMode::Standard;
      
      // Create a shared property group manager.
      SharedPropertyGroupManager^ groupManager = gcnew SharedPropertyGroupManager;

      // Create a shared property group.
      SharedPropertyGroup^ group =
         groupManager->CreatePropertyGroup( "Receipts",  lockMode,  releaseMode,  groupExists );

      // Create a shared property.
      SharedProperty^ ReceiptNumber;
      ReceiptNumber = group->CreateProperty( "ReceiptNumber",  propertyExists );

      // Retrieve the value from shared property, and increment the shared 
      // property value.
      nextReceiptNumber =  safe_cast<int>(ReceiptNumber->Value);
      ReceiptNumber->Value = nextReceiptNumber + 1;

      // Return nextReceiptNumber
      return nextReceiptNumber;
   }
};

using System;
using System.EnterpriseServices;
using System.Reflection;

[assembly: ApplicationName("ReceiptNumberGenerator")]
[assembly: ApplicationActivation(ActivationOption.Library)]

public class ReceiptNumberGeneratorClass
{
    // Generates a new receipt number based on the receipt number
    // stored by the Shared Property Manager (SPM)
    public int GetNextReceiptNumber()
    {
        bool groupExists,propertyExists;
        int nextReceiptNumber = 0;
        PropertyLockMode lockMode = PropertyLockMode.SetGet;
        PropertyReleaseMode releaseMode = PropertyReleaseMode.Standard;

        // Create a shared property group manager.
        SharedPropertyGroupManager groupManager = new SharedPropertyGroupManager();
        // Create a shared property group.
        SharedPropertyGroup group = groupManager.CreatePropertyGroup("Receipts",
                                   ref lockMode, ref releaseMode, out groupExists);
        // Create a shared property.
        SharedProperty ReceiptNumber;
        ReceiptNumber = group.CreateProperty("ReceiptNumber",out propertyExists);
        // Retrieve the value from shared property, and increment the shared
        // property value.
        nextReceiptNumber = (int) ReceiptNumber.Value;
        ReceiptNumber.Value = nextReceiptNumber + 1;
        // Return nextReceiptNumber
        return nextReceiptNumber;
    }
}

Imports System.EnterpriseServices
Imports System.Reflection

<Assembly: ApplicationName("ReceiptNumberGenerator")> 
<Assembly: ApplicationActivation(ActivationOption.Library)> 
 

Public Class ReceiptNumberGeneratorClass
    
    ' Generates a new receipt number based on the receipt number
    ' stored by the Shared Property Manager (SPM)
    Public Function GetNextReceiptNumber() As Integer 
        Dim groupExists, propertyExists As Boolean
        Dim nextReceiptNumber As Integer = 0
        Dim lockMode As PropertyLockMode = PropertyLockMode.SetGet
        Dim releaseMode As PropertyReleaseMode = PropertyReleaseMode.Standard
        
        ' Create a shared property group manager.
        Dim groupManager As New SharedPropertyGroupManager()

        ' Create a shared property group.
        Dim group As SharedPropertyGroup = groupManager.CreatePropertyGroup("Receipts", lockMode, releaseMode, groupExists)
        ' Create a shared property.
        Dim ReceiptNumber As SharedProperty
        ReceiptNumber = group.CreateProperty("ReceiptNumber", propertyExists)

        ' Retrieve the value from shared property, and increment the shared 
        ' property value.
        nextReceiptNumber = Fix(ReceiptNumber.Value)
        ReceiptNumber.Value = nextReceiptNumber + 1

        ' Return nextReceiptNumber
        Return nextReceiptNumber
    
    End Function 'GetNextReceiptNumber

End Class

属性

Value

获取或设置共享属性的值。

方法

Equals(Object)	确定指定对象是否等于当前对象。 (继承自 Object)
GetHashCode()	作为默认哈希函数。 (继承自 Object)
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()	返回表示当前对象的字符串。 (继承自 Object)