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  • Článek

InvalidDataSourceReference Class

Represents a state in which a data source reference is no longer valid.

Namespace:  ReportService2005
Assembly:  ReportService2005 (in ReportService2005.dll)

Syntax

'Declaration
<SerializableAttribute> _
Public Class InvalidDataSourceReference _
    Inherits DataSourceDefinitionOrReference
'Usage
Dim instance As InvalidDataSourceReference

[SerializableAttribute]
public class InvalidDataSourceReference : DataSourceDefinitionOrReference

[SerializableAttribute]
public ref class InvalidDataSourceReference : public DataSourceDefinitionOrReference

[<SerializableAttribute>]
type InvalidDataSourceReference =  
    class
        inherit DataSourceDefinitionOrReference
    end

public class InvalidDataSourceReference extends DataSourceDefinitionOrReference

Remarks

An InvalidDataSourceReference object is used with the Item property as output by GetItemDataSources method.

In most cases, an InvalidDataSourceReference object is returned when a shared data source has been deleted.

To evaluate whether a data source reference is valid, use the is keyword in C# (TypeOf/Is in Visual Basic) to determine the type of object returned by the Item property of the DataSource class, as shown in the following C# code:

DataSource[] dataSource;
dataSource = service.GetReportDataSources( "/MyReport" );

foreach ( DataSource ds in dataSource )
{
    if ( ds.Item is InvalidDataSourceReference )
    {
        // Code to handle a corrupt or missing data source reference goes here...
    }
}

Inheritance Hierarchy

System.Object
  ReportService2005.DataSourceDefinitionOrReference
    ReportService2005.InvalidDataSourceReference

Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.