Letras y Números

Excel Services es o no es un WEB Service. May 31, 2010

Pues si y no, empecemos con el NO

Excel Services tiene gran cantidad de funcionalidades bastante interesante las cuales permiten que por medio de Presentación de archivos de Excel utilizando ExcelWEBAccess, tener en un ambiente web funcionalidades interesantes como búsquedas, presentación de zonas definidas utilizando DefineNames, permite cálculos de formato y cálculos entre celdas, etc.
Ahora el Si, (WebService).

Pero igualmente podemos utilizar el WEBService el cual expone varios metodos WEB para realizar modificaciones sobre archivos de Excel que se encuentren en una librería de documentos de SharePoint.

La dirección de acceso de este Web Service es http://server/_vti_bin/excelservice.asmx?WSDL
El cual expone los siguientes métodos.
Methods
Calculate ( sessionId As string ,  sheetName As string ,  rangeCoordinates As RangeCoordinates ) As ArrayOfStatus

CalculateA1 ( sessionId As string ,  sheetName As string ,  rangeName As string ) As ArrayOfStatus

CalculateWorkbook ( sessionId As string ,  calculateType As CalculateType ) As ArrayOfStatus

CancelRequest ( sessionId As string ) As ArrayOfStatus

CloseWorkbook ( sessionId As string ) As ArrayOfStatus

GetApiVersion ( ) As string

GetCell ( sessionId As string ,  sheetName As string ,  row As int ,  column As int ,  formatted As boolean ) As ArrayOfStatus

GetCellA1 ( sessionId As string ,  sheetName As string ,  rangeName As string ,  formatted As boolean ) As ArrayOfStatus

GetRange ( sessionId As string ,  sheetName As string ,  rangeCoordinates As RangeCoordinates ,  formatted As boolean ) As ArrayOfAnyType

GetRangeA1 ( sessionId As string ,  sheetName As string ,  rangeName As string ,  formatted As boolean ) As ArrayOfAnyType

GetSessionInformation ( sessionId As string ) As string

GetWorkbook ( sessionId As string ,  workbookType As WorkbookType ) As base64Binary

OpenWorkbook ( workbookPath As string ,  uiCultureName As string ,  dataCultureName As string ) As string

Refresh ( sessionId As string ,  connectionName As string ) As ArrayOfStatus

SetCell ( sessionId As string ,  sheetName As string ,  row As int ,  column As int ,  cellValue As ) As ArrayOfStatus

SetCellA1 ( sessionId As string ,  sheetName As string ,  rangeName As string ,  cellValue As ) As ArrayOfStatus

SetRange ( sessionId As string ,  sheetName As string ,  rangeCoordinates As RangeCoordinates ,  rangeValues As ArrayOfAnyType ) As ArrayOfStatus

SetRangeA1 ( sessionId As string ,  sheetName As string ,  rangeName As string ,  rangeValues As ArrayOfAnyType ) As ArrayOfStatus

Para consultar una celda pueden utilizar el siguiente código

    Private Sub _GetCell()
        Dim sessionId As String = Nothing
        Dim cellValue As Object = Nothing
        Dim objExcelService As New shphost.ExcelService()
        Dim status As shphost.Status() = Nothing
        Try

            objExcelService.UseDefaultCredentials = True
            objExcelService.SoapVersion = Services.Protocols.SoapProtocolVersion.Soap12
            sessionId = objExcelService.OpenWorkbook(_workbookPath, “en-US”, “en-US”, status)

            ‘ Retrieve the data from the referenced cell.
            cellValue = objExcelService.GetCell(sessionId, _sheetName, _row, _column, True, status)
            _cell = cellValue

        Catch ex As SoapException
            Dim objLog As New EventViewerLog
            objLog.CreateLogSharePointComponents(“An error has occurred.SOAPException” & ex.Message)
            _cell = “An error has occurred.” & ex.Message
        Catch ex As System.Exception
            Dim objLog As New EventViewerLog
            objLog.CreateLogSharePointComponents(“An error has occurred.Normal Exception” & ex.Message)
            _cell = “An error has occurred.” & ex.Message
        Finally
            Try
                If Not String.IsNullOrEmpty(sessionId) Then
                    objExcelService.CloseWorkbook(sessionId)
                End If
            Catch ex As Exception
                Dim objLog As New EventViewerLog
                objLog.CreateLogSharePointComponents(“An error has occurred.Finally Exception” & ex.Message)
            End Try
        End Try
    End Sub