ListObject.OriginalDataRestored Event

Definition

Occurs when a user performs an action that is not allowed, and the ListObject control then reverts back to its original state.

event Microsoft.Office.Tools.Excel.OriginalDataRestoredEventHandler OriginalDataRestored;

Examples

The following code example creates a DataTable and a ListObject, and binds the ListObject to the DataTable. It then creates an OriginalDataRestored event handler. To test the event, right-click a column letter above the ListObject on sheet 1 and then click Delete in the shortcut menu. The event handler replaces the column and column header data and displays a message for each action.

This version is for a document-level customization.

private void ListObject_OriginalDataRestored()
{
    // Create a new DataSet and DataTable.
    DataSet ds = new DataSet();
    DataTable dt = ds.Tables.Add("Customers");
    DataColumn lastName = new DataColumn("LastName");
    dt.Columns.Add(lastName);
    dt.Columns.Add(new DataColumn("FirstName"));

    // Add two new rows to the DataTable.
    DataRow dr1 = dt.NewRow();
    dr1["LastName"] = "Chan";
    dr1["FirstName"] = "Gareth";
    dt.Rows.Add(dr1);
    DataRow dr2 = dt.NewRow();
    dr2["LastName"] = "Nitsche";
    dr2["FirstName"] = "Sonja";
    dt.Rows.Add(dr2);

    // Create a list object.
    Microsoft.Office.Tools.Excel.ListObject list1 = 
        this.Controls.AddListObject(
        this.Range["A1"], "list1");

    // Bind the list object to the DataTable.
    list1.AutoSetDataBoundColumnHeaders = true;
    list1.SetDataBinding(ds, "Customers", "LastName",
        "FirstName");

    // Create the event handler.
    list1.OriginalDataRestored += new 
        Microsoft.Office.Tools.Excel.
        OriginalDataRestoredEventHandler(list1_OriginalDataRestored);
}

void list1_OriginalDataRestored(object sender, 
    Microsoft.Office.Tools.Excel.OriginalDataRestoredEventArgs e)
{
    MessageBox.Show("This data is bound to a data source and " +
    "will be restored. This change is: " + e.ChangeType.ToString() +
    ". The reason is: " + e.ChangeReason.ToString() + ".");
}
WithEvents OriginalDataRestoredList As _
    Microsoft.Office.Tools.Excel.ListObject
Private Sub ListObject_OriginalDataRestored()
    ' Create a new DataSet and DataTable.
    Dim ds As New DataSet()
    Dim dt As DataTable = ds.Tables.Add("Customers")
    Dim lastName As New DataColumn("LastName")
    dt.Columns.Add(lastName)
    dt.Columns.Add(New DataColumn("FirstName"))

    ' Add two new rows to the DataTable.
    Dim dr1 As DataRow = dt.NewRow()
    dr1("LastName") = "Chan"
    dr1("FirstName") = "Gareth"
    dt.Rows.Add(dr1)
    Dim dr2 As DataRow = dt.NewRow()
    dr2("LastName") = "Nitsche"
    dr2("FirstName") = "Sonja"
    dt.Rows.Add(dr2)

    ' Create a list object.
    OriginalDataRestoredList = Me.Controls.AddListObject( _
        Me.Range("A1"), "OriginalDataRestoredList")

    ' Bind the list object to the DataTable.
    OriginalDataRestoredList.AutoSetDataBoundColumnHeaders = True
    OriginalDataRestoredList.SetDataBinding(ds, "Customers", _
        "LastName", "FirstName")
End Sub

Private Sub List1_OriginalDataRestored(ByVal sender As Object, _
    ByVal e As Microsoft.Office.Tools.Excel.OriginalDataRestoredEventArgs) _
    Handles OriginalDataRestoredList.OriginalDataRestored
    MessageBox.Show("This data is bound to a data source and " & _
    "will be restored. This change is: " & e.ChangeType.ToString() & _
    ". The reason is: " & e.ChangeReason.ToString() + ".")
End Sub

This version is for an application-level add-in. To use this code example, add the using System.Data; directive if you are using C# or the Imports System.Data statement if you are using Visual Basic.

private void ListObject_OriginalDataRestored()
{
    // Create a new DataSet and DataTable.
    DataSet ds = new DataSet();
    DataTable dt = ds.Tables.Add("Customers");
    DataColumn lastName = new DataColumn("LastName");
    dt.Columns.Add(lastName);
    dt.Columns.Add(new DataColumn("FirstName"));

    // Add two new rows to the DataTable.
    DataRow dr1 = dt.NewRow();
    dr1["LastName"] = "Chan";
    dr1["FirstName"] = "Gareth";
    dt.Rows.Add(dr1);
    DataRow dr2 = dt.NewRow();
    dr2["LastName"] = "Nitsche";
    dr2["FirstName"] = "Sonja";
    dt.Rows.Add(dr2);

    // Create a list object.
    Worksheet vstoWorksheet =
        Globals.Factory.GetVstoObject(this.Application.ActiveWorkbook.Worksheets[1]);
    ListObject list1 =
        vstoWorksheet.Controls.AddListObject(
        vstoWorksheet.Range["A1"], "list1");

    // Bind the list object to the DataTable.
    list1.AutoSetDataBoundColumnHeaders = true;
    list1.SetDataBinding(ds, "Customers", "LastName",
        "FirstName");

    // Create the event handler.
    list1.OriginalDataRestored += new
        OriginalDataRestoredEventHandler(list1_OriginalDataRestored);
}

void list1_OriginalDataRestored(object sender,
    Microsoft.Office.Tools.Excel.OriginalDataRestoredEventArgs e)
{
    System.Windows.Forms.MessageBox.Show("This data is bound to a data source and " +
    "will be restored. This change is: " + e.ChangeType.ToString() +
    ". The reason is: " + e.ChangeReason.ToString() + ".");
}
WithEvents OriginalDataRestoredList As ListObject
Private Sub ListObject_OriginalDataRestored()
    ' Create a new DataSet and DataTable.
    Dim ds As New DataSet()
    Dim dt As DataTable = ds.Tables.Add("Customers")
    Dim lastName As New DataColumn("LastName")
    dt.Columns.Add(lastName)
    dt.Columns.Add(New DataColumn("FirstName"))

    ' Add two new rows to the DataTable.
    Dim dr1 As DataRow = dt.NewRow()
    dr1("LastName") = "Chan"
    dr1("FirstName") = "Gareth"
    dt.Rows.Add(dr1)
    Dim dr2 As DataRow = dt.NewRow()
    dr2("LastName") = "Nitsche"
    dr2("FirstName") = "Sonja"
    dt.Rows.Add(dr2)

    ' Create a list object.
    Dim NativeWorksheet As Microsoft.Office.Interop.Excel.Worksheet =
        Me.Application.Worksheets(1)
    Dim vstoWorksheet As Microsoft.Office.Tools.Excel.Worksheet =
            Globals.Factory.GetVstoObject(NativeWorksheet)
    OriginalDataRestoredList = vstoWorksheet.Controls.AddListObject( _
        vstoWorksheet.Range("A1"), "OriginalDataRestoredList")

    ' Bind the list object to the DataTable.
    OriginalDataRestoredList.AutoSetDataBoundColumnHeaders = True
    OriginalDataRestoredList.SetDataBinding(ds, "Customers", _
        "LastName", "FirstName")
End Sub

Private Sub List1_OriginalDataRestored(ByVal sender As Object, _
    ByVal e As Microsoft.Office.Tools.Excel.OriginalDataRestoredEventArgs) _
    Handles OriginalDataRestoredList.OriginalDataRestored
    System.Windows.Forms.MessageBox.Show( _
        "This data is bound to a data source and " & _
        "will be restored. This change is: " & e.ChangeType.ToString() & _
        ". The reason is: " & e.ChangeReason.ToString() + ".")
End Sub

Remarks

An example of an action that would cause this event to be raised is if a user makes changes to data that is read-only. The ListObject control undoes the changes and replaces the original values.

This event provides information in an enumeration that contains what was restored and why.

Applies to