ParameterInProperty.Required Property
NOTE: This API is now obsolete.
Gets or sets the required status of a parameter provided by a WebPart that implements the IParametersInConsumer interface when the ParametersInConsumerInitevent occurs.
Namespace: Microsoft.SharePoint.WebPartPages.Communication
Assembly: Microsoft.SharePoint (in Microsoft.SharePoint.dll)
Syntax
<ObsoleteAttribute("Use System.Web.UI.WebControls.WebParts.IWebPartParameters instead")> _
Public Property Required As Boolean
Get
Set
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 if the parameter is required; otherwise, false.
Remarks
The Required property indicates whether a parameter is required or not. If false is specified, indicating that the parameter is optional, and no mapping is specified by the user, then an empty string is passed as the value for the optional parameter to the consumer Web Part.
Examples
The following code example shows an overridden WebPart.PartCommunicationInitmethod that sets the Required property of an instance of the ParameterInProperty class. This code example is part of a larger example provided for the IParametersInConsumer interface.
' 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);
}
}