Interfaccia ISmartTagExtension

Articolo
08/11/2011

Rappresenta un'estensione di uno smart tag in un foglio di lavoro di Excel personalizzato tramite gli Strumenti di sviluppo di Microsoft Office per Visual Studio. L'estensione definisce un sistema di riconoscimento personalizzato per lo smart tag.

Spazio dei nomi: Microsoft.Office.Tools.Excel
Assembly: Microsoft.Office.Tools.Excel (in Microsoft.Office.Tools.Excel.dll)

Sintassi

'Dichiarazione
<GuidAttribute("baa275c5-e25c-49ba-87be-dbe0712f7eb1")> _
Public Interface ISmartTagExtension _
    Inherits IExtension

[GuidAttribute("baa275c5-e25c-49ba-87be-dbe0712f7eb1")]
public interface ISmartTagExtension : IExtension

Il tipo ISmartTagExtension espone i seguenti membri.

Proprietà

	Nome	Descrizione
	ExtensionBase	Ottiene l'oggetto che viene esteso da questo oggetto IExtension. (Ereditato da IExtension)

In alto

Metodi

	Nome	Descrizione
	Recognize	Cerca nel testo della cella i termini riconosciuti.

In alto

Note

Implementare l'interfaccia ISmartTagExtension per controllare come Excel riconosce smart tag nei fogli di lavoro. Per ulteriori informazioni, vedere Architettura degli smart tag e Procedura: creare smart tag con sistemi di riconoscimento personalizzati in Excel e .NET Framework 4.

Utilizzo

Questo tipo deve essere utilizzato solo nei progetti per Excel 2007. Gli smart tag sono deprecati in Excel 2010. Per ulteriori informazioni, vedere Cenni preliminari sugli smart tag.

Esempi

Nell'esempio di codice seguente viene illustrato come implementare ISmartTagExtension per creare un sistema di riconoscimento degli smart tag personalizzato. L'esempio implementa il metodo Recognize per riconoscere tutti i termini smart tag ubicati in una cella. Nell'esempio si presuppone che sia stato aggiunto un riferimento a Microsoft.Office.Interop.SmartTag dalla scheda .NET della finestra di dialogo Aggiungi riferimento.

Imports System
Imports System.Windows.Forms
Imports Microsoft.Office.Interop.SmartTag
Imports Microsoft.Office.Tools.Excel

Public Class CustomSmartTag
    Implements ISmartTagExtension

    ' Declare the smart tag.
    Private smartTagDemo As Microsoft.Office.Tools.Excel.SmartTag

    ' Declare actions for this smart tag.
    WithEvents Action1 As Microsoft.Office.Tools.Excel.Action
    WithEvents Action2 As Microsoft.Office.Tools.Excel.Action

    Public Sub New()
        Me.smartTagDemo = Globals.Factory.CreateSmartTag(
            "https://www.contoso.com/Demo#DemoSmartTag", "Custom Smart Tag", Me)

        Action1 = Globals.Factory.CreateAction("Display property value")
        Action2 = Globals.Factory.CreateAction("Display smart tag details")

        smartTagDemo.Terms.AddRange(New String() {"sales", "organization"})
        smartTagDemo.Actions = New Microsoft.Office.Tools.Excel.Action() {Action1, Action2}
    End Sub

    Private Sub Recognize(ByVal text As String, 
        ByVal site As ISmartTagRecognizerSite, ByVal tokenList As ISmartTagTokenList, 
        ByVal context As SmartTagRecognizeContext) Implements ISmartTagExtension.Recognize

        ' Determine whether each smart tag term exists in the document text.
        Dim Term As String
        For Each Term In smartTagDemo.Terms

            ' Search the cell text for the first instance of 
            ' the current smart tag term.
            Dim index As Integer = context.CellText.IndexOf(Term, 0)

            If (index >= 0) Then

                ' Create a smart tag token and a property bag for the 
                ' recognized term.
                Dim propertyBag As ISmartTagProperties = site.GetNewPropertyBag()

                ' Write a new property value.
                Dim key As String = "Key1"
                propertyBag.Write(key, DateTime.Now)

                ' Attach the smart tag to the term in the document.
                context.PersistTag(propertyBag)

                ' This implementation only finds the first instance
                ' of a smart tag term in the cell. 
                Exit For
            End If
        Next
    End Sub

    ' This action displays the property value for the term.
    Private Sub Action1_Click(ByVal sender As Object,
        ByVal e As Microsoft.Office.Tools.Excel.ActionEventArgs) Handles Action1.Click

        Dim propertyBag As ISmartTagProperties = e.Properties
        Dim key As String = "Key1"
        MessageBox.Show("The corresponding value of " & key & " is: " &
            propertyBag.Read(key))
    End Sub

    ' This action displays smart tag details.
    Private Sub Action2_Click(ByVal sender As Object,
        ByVal e As Microsoft.Office.Tools.Excel.ActionEventArgs) Handles Action2.Click
        MessageBox.Show("The current smart tag caption is '" &
        smartTagDemo.Caption & "'. The current smart tag type is '" &
        smartTagDemo.SmartTagType & "'.")
    End Sub

    Public ReadOnly Property Base() As Microsoft.Office.Tools.Excel.SmartTag
        Get
            Return smartTagDemo
        End Get
    End Property

    Public ReadOnly Property ExtensionBase() As Object Implements ISmartTagExtension.ExtensionBase
        Get
            Return smartTagDemo
        End Get
    End Property
End Class

using System;
using System.Windows.Forms;
using Microsoft.Office.Interop.SmartTag;
using Microsoft.Office.Tools.Excel;

namespace Trin_ExcelDerivedSmartTags4
{
    class CustomSmartTag : ISmartTagExtension
    {
        // Declare the smart tag.
        Microsoft.Office.Tools.Excel.SmartTag smartTagDemo;

        // Declare actions for this smart tag.
        private Microsoft.Office.Tools.Excel.Action Action1;
        private Microsoft.Office.Tools.Excel.Action Action2;

        public CustomSmartTag()
        {
            this.smartTagDemo = Globals.Factory.CreateSmartTag(
                "https://www.contoso.com/Demo#DemoSmartTag", "Custom Smart Tag", this);

            Action1 = Globals.Factory.CreateAction("Display property value");
            Action2 = Globals.Factory.CreateAction("Display smart tag details");

            smartTagDemo.Terms.AddRange(new string[] { "sales", "organization" });
            smartTagDemo.Actions = new Microsoft.Office.Tools.Excel.Action[] { 
                Action1, Action2 };

            Action1.Click += new ActionClickEventHandler(Action1_Click);
            Action2.Click += new ActionClickEventHandler(Action2_Click);
        }

        void ISmartTagExtension.Recognize(string text, ISmartTagRecognizerSite site, 
            ISmartTagTokenList tokenList, SmartTagRecognizeContext context)
        {

            // Determine whether each smart tag term exists in the document text.
            foreach (string term in smartTagDemo.Terms)
            {
                // Search the cell text for the first instance of the current smart tag term.
                int index = context.CellText.IndexOf(term, 0);

                if (index >= 0)
                {
                    // Create a smart tag token and a property bag for the recognized term.
                    ISmartTagProperties propertyBag = site.GetNewPropertyBag();

                    // Write a new property value.                 
                    string key = "Key1";
                    propertyBag.Write(key, DateTime.Now.ToString());

                    // Attach the smart tag to the term in the document
                    context.PersistTag(propertyBag);

                    // This implementation only finds the first instance of a 
                    // smart tag term in the cell. 
                    break;
                }
            }
        }

        // This action displays the property value for the term.
        private void Action1_Click(object sender,
            Microsoft.Office.Tools.Excel.ActionEventArgs e)
        {
            ISmartTagProperties propertyBag = e.Properties;
            string key = "Key1";
            MessageBox.Show("The corresponding value of " + key +
                " is: " + propertyBag.get_Read(key));
        }

        // This action displays smart tag details.
        private void Action2_Click(object sender,
            Microsoft.Office.Tools.Excel.ActionEventArgs e)
        {
            MessageBox.Show("The current smart tag caption is '" +
                smartTagDemo.Caption + "'. The current smart tag type is '" +
                smartTagDemo.SmartTagType + "'.");
        }

        public Microsoft.Office.Tools.Excel.SmartTag Base
        {
            get { return smartTagDemo; }
        }

        public object ExtensionBase
        {
            get { return smartTagDemo; }
        }
    }