How to query an image service

public static IFIDSet QueryIS_PixelSize(IImageServer imageServer)
{
    //Cast:
    IImageServer3 imageServer3 = (IImageServer3)imageServer;

    //Create a filter using a pixel size of 0.28/0.28.
    IImageQueryFilter imageQueryFilter = new ImageQueryFilterClass();
    IPoint pixelSize = new PointClass();
    pixelSize.PutCoords(0.28, 0.28);
    imageQueryFilter.PixelSize = pixelSize;

    //Return feature IDs.
    IFIDSet fidSet = imageServer3.GetCatalogItemIDs((IQueryFilter)imageQueryFilter);
    return fidSet;
}

Public Shared Function QueryIS_PixelSize(ByVal imageServer As IImageServer) As IFIDSet
'Cast:
Dim imageServer3 As IImageServer3 = CType(imageServer, IImageServer3)

'Create a filter using a pixel size of 0.28/0.28.
Dim imageQueryFilter As IImageQueryFilter = New ImageQueryFilterClass()
Dim pixelSize As IPoint = New PointClass()
pixelSize.PutCoords(0.28, 0.28)
imageQueryFilter.PixelSize = pixelSize

'Return feature IDs.
Dim fidSet As IFIDSet = imageServer3.GetCatalogItemIDs(CType(imageQueryFilter, IQueryFilter))
Return fidSet
End Function

public static IRecordSet QueryIS_Spatial(IImageServer imageServer, IGeometry
    queryGeometry)
{
    //Cast:
    IImageServer3 imageServer3 = (IImageServer3)imageServer;
    //Create a spatial filter using the provided geometry.
    ISpatialFilter spatFilter = new ImageQueryFilterClass();
    spatFilter.Geometry = queryGeometry;
    spatFilter.SpatialRel = esriSpatialRelEnum.esriSpatialRelEnvelopeIntersects;

    //Return a record set.
    IRecordSet recordSet = imageServer3.GetCatalogItems((IQueryFilter)spatFilter);
    return recordSet;
}

Public Shared Function QueryIS_Spatial(ByVal imageServer As IImageServer, ByVal queryGeometry As IGeometry) As IRecordSet
'Cast:
Dim imageServer3 As IImageServer3 = CType(imageServer, IImageServer3)

'Create a spatial filter using the provided geometry.
Dim spatFilter As ISpatialFilter = New ImageQueryFilterClass()
spatFilter.Geometry = queryGeometry
spatFilter.SpatialRel = esriSpatialRelEnum.esriSpatialRelEnvelopeIntersects

'Return a record set.
Dim recordSet As IRecordSet = imageServer3.GetCatalogItems(CType(spatFilter, IQueryFilter))
Return recordSet
End Function

public static int QueryIS_Attribute(IImageServer imageServer)
{
    //Cast:
    IImageServer3 imageServer3 = (IImageServer3)imageServer;
    //Create an attribute filter that queries primary rasters.
    IQueryFilter attFilter = new ImageQueryFilterClass();
    attFilter.WhereClause = "Category = 1";

    //Return the primary rasters's count.
    int count = imageServer3.GetCatalogItemCount(attFilter);
    return count;
}

Public Shared Function QueryIS_Attribute(ByVal imageServer As IImageServer) As Integer
'Cast:
Dim imageServer3 As IImageServer3 = CType(imageServer, IImageServer3)

'Create an attribute filter that queries primary rasters.
Dim attFilter As IQueryFilter = New ImageQueryFilterClass()
attFilter.WhereClause = "Category = 1"

'Return the primary rasters's count.
Dim Count As Integer = imageServer3.GetCatalogItemCount(attFilter)
Return Count
End Function