ParameterInProperty.Required property

NOTE: This API is now obsolete.

取得或設定參數， WebPart ParametersInConsumerInit事件發生時，實作IParametersInConsumer介面所提供的必要的狀態。

Namespace:  Microsoft.SharePoint.WebPartPages.Communication
Assembly:  Microsoft.SharePoint (in Microsoft.SharePoint.dll)

Syntax

'宣告
<ObsoleteAttribute("Use System.Web.UI.WebControls.WebParts.IWebPartParameters instead")> _
Public Property Required As Boolean
    Get
    Set
'用途
Dim instance As ParameterInProperty
Dim value As Boolean

value = instance.Required

instance.Required = value

[ObsoleteAttribute("Use System.Web.UI.WebControls.WebParts.IWebPartParameters instead")]
public bool Required { get; set; }

Property value

Type: System.Boolean
true如果參數是必要的。否則， false。

備註

Required屬性指出參數是否為必要。如果指定false ，表示參數是選擇性的且沒有對應到指定的使用者，然後空字串會傳遞做為選擇性參數的值給消費者 Web 組件。

Examples

下列程式碼範例示範設定ParameterInProperty類別的執行個體的Required屬性覆寫的WebPart.PartCommunicationInit方法。這個程式碼範例是提供IParametersInConsumer介面的完整範例的一部分。

      ' Step #7: Override the PartCommunicationInit method.
      ' The PartCommunicationInit method is called by the Web Part 
      ' infrastructure during the ASP.NET PreRender 
      ' phase to allow the part to pass initialization information to 
      ' the other connected parts.
      ' It is important to always pass initialization information. Some 
      ' parts may not behave properly if this initialization 
      ' information is not received.
      Public Overrides Sub PartCommunicationInit()
         ' Ensure all controls have been created.
         EnsureChildControls()
         
         ' Check if connected.
         If _connected Then
            
               ' Need to create the args for the 
               ' ParametersInConsumerInit event.
               Dim parametersInConsumerInitEventArgs As New ParametersInConsumerInitEventArgs()
               
               ' Set the ParameterInProperties.
               parametersInConsumerInitEventArgs.ParameterInProperties = New ParameterInProperty(3) {}
               
               parametersInConsumerInitEventArgs.ParameterInProperties(0) = New ParameterInProperty()
               parametersInConsumerInitEventArgs.ParameterInProperties(0).Description = _fontFamilyParamDescription
               parametersInConsumerInitEventArgs.ParameterInProperties(0).ParameterDisplayName = _fontFamilyParamDisplayName
               parametersInConsumerInitEventArgs.ParameterInProperties(0).ParameterName = _fontFamilyParamName
               parametersInConsumerInitEventArgs.ParameterInProperties(0).Required = True
               
               parametersInConsumerInitEventArgs.ParameterInProperties(1) = New ParameterInProperty()
               parametersInConsumerInitEventArgs.ParameterInProperties(1).Description = _fontColorParamDescription
               parametersInConsumerInitEventArgs.ParameterInProperties(1).ParameterDisplayName = _fontColorParamDisplayName
               parametersInConsumerInitEventArgs.ParameterInProperties(1).ParameterName = _fontColorParamName
               parametersInConsumerInitEventArgs.ParameterInProperties(1).Required = False
               
               parametersInConsumerInitEventArgs.ParameterInProperties(2) = New ParameterInProperty()
               parametersInConsumerInitEventArgs.ParameterInProperties(2).Description = _fontWeightParamDescription
               parametersInConsumerInitEventArgs.ParameterInProperties(2).ParameterDisplayName = _fontWeightParamDisplayName
               parametersInConsumerInitEventArgs.ParameterInProperties(2).ParameterName = _fontWeightParamName
               parametersInConsumerInitEventArgs.ParameterInProperties(2).Required = True
               
               parametersInConsumerInitEventArgs.ParameterInProperties(3) = New ParameterInProperty()
               parametersInConsumerInitEventArgs.ParameterInProperties(3).Description = _fontSizeParamDescription
               parametersInConsumerInitEventArgs.ParameterInProperties(3).ParameterDisplayName = _fontSizeParamDisplayName
               parametersInConsumerInitEventArgs.ParameterInProperties(3).ParameterName = _fontSizeParamName
               parametersInConsumerInitEventArgs.ParameterInProperties(3).Required = False
               
               ' Fire the ParametersInConsumerInit event.
               RaiseEvent ParametersInConsumerInit(Me, parametersInConsumerInitEventArgs)
           
         End If
      End Sub 'PartCommunicationInit

// Step #7: Override the PartCommunicationInit method.
// The PartCommunicationInit method is called by the Web Part 
// infrastructure during the ASP.NET PreRender 
// phase to allow the part to pass initialization information to the 
// other connected parts.
// It is important to always pass initialization information. Some 
// parts may not behave properly if this initialization information is 
// not received.
public override void PartCommunicationInit()
{
    // Ensure all controls have been created.
    EnsureChildControls();

    // Check if connected.
    if(_connected)
    {
       
            // Need to create the ParametersInConsumerInitEventArgs 
            // object for the ParametersInConsumerInit event.
            ParametersInConsumerInitEventArgs parametersInConsumerInitEventArgs = new ParametersInConsumerInitEventArgs();
    
            // Set the ParameterInProperties.
            parametersInConsumerInitEventArgs.ParameterInProperties = new ParameterInProperty[4];

            parametersInConsumerInitEventArgs.ParameterInProperties[0] = new ParameterInProperty();
            parametersInConsumerInitEventArgs.ParameterInProperties[0].Description = _fontFamilyParamDescription;
            parametersInConsumerInitEventArgs.ParameterInProperties[0].ParameterDisplayName = _fontFamilyParamDisplayName;
            parametersInConsumerInitEventArgs.ParameterInProperties[0].ParameterName = _fontFamilyParamName;
            parametersInConsumerInitEventArgs.ParameterInProperties[0].Required = true;

            parametersInConsumerInitEventArgs.ParameterInProperties[1] = new ParameterInProperty();
            parametersInConsumerInitEventArgs.ParameterInProperties[1].Description = _fontColorParamDescription;
            parametersInConsumerInitEventArgs.ParameterInProperties[1].ParameterDisplayName = _fontColorParamDisplayName;
            parametersInConsumerInitEventArgs.ParameterInProperties[1].ParameterName = _fontColorParamName;
            parametersInConsumerInitEventArgs.ParameterInProperties[1].Required = false;

            parametersInConsumerInitEventArgs.ParameterInProperties[2] = new ParameterInProperty();
            parametersInConsumerInitEventArgs.ParameterInProperties[2].Description = _fontWeightParamDescription;
            parametersInConsumerInitEventArgs.ParameterInProperties[2].ParameterDisplayName = _fontWeightParamDisplayName;
            parametersInConsumerInitEventArgs.ParameterInProperties[2].ParameterName = _fontWeightParamName;
            parametersInConsumerInitEventArgs.ParameterInProperties[2].Required = true;

            parametersInConsumerInitEventArgs.ParameterInProperties[3] = new ParameterInProperty();
            parametersInConsumerInitEventArgs.ParameterInProperties[3].Description = _fontSizeParamDescription;
            parametersInConsumerInitEventArgs.ParameterInProperties[3].ParameterDisplayName = _fontSizeParamDisplayName;
            parametersInConsumerInitEventArgs.ParameterInProperties[3].ParameterName = _fontSizeParamName;
            parametersInConsumerInitEventArgs.ParameterInProperties[3].Required = false;

            // Fire the ParametersInConsumerInit event.
            ParametersInConsumerInit(this, parametersInConsumerInitEventArgs);
       
    }
}

請參閱

參照

ParameterInProperty class

ParameterInProperty members

Microsoft.SharePoint.WebPartPages.Communication namespace