IndexExists<T>(String) Method

Returns true if the index exists for the passed in type and index name

Syntax

Visual Basic (Declaration)
Visual Basic (Usage)
C#
C++/CLI

Public Overloads Function IndexExists(Of T As {Class, New})( _
   ByVal indexName As String _
) As Boolean

Dim instance As NinjaDbPro
Dim indexName As String
Dim value As Boolean
 
value = instance.IndexExists(Of T)(indexName)

public bool IndexExists<T>( 
   string indexName
)
where T: class, new()

public:
bool IndexExistsgeneric<typename T>
( 
   String^ indexName
) 
where T: ref class, gcnew()

Parameters

indexName: The name of the index, case sensitive

Type Parameters

T: The type of the class

Return Value

True if it exists

Example

NinjaDbPro db = new NinjaDbPro("MyDatabaseDirectory", "MyDatabaseName");
 
db.OpenDatabase();
 
//Add the index if it doesn't exist
if (!db.IndexExists<Person>("NameIndex"))
{
    db.AddIndex<Person>("NameIndex", "Name", IndexStyle.NonUnique);
}
 
bool indexExists = db.IndexExists<Person>("NameIndex");
 
db.CloseDatabase();

VB.NET

Dim db As New NinjaDbPro("MyDatabaseDirectory", "MyDatabaseName")
db.OpenDatabase()
 
'Add the index if it doesn't exist
If Not db.IndexExists(Of Person)("NameIndex") Then
    db.AddIndex(Of Person)("NameIndex", "Name", IndexStyle.NonUnique)
End If
 
Dim indexExists As Boolean = db.IndexExists(Of Person)("NameIndex")
 
db.CloseDatabase()

Requirements

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

NinjaDbPro Class
NinjaDbPro Members
Overload List