Changed Event (NamedStyleCollection)

In This Topic

Occurs when a style is added, removed, or changed in the collection.

Syntax

Visual Basic
C#

'Declaration
 
Public Event Changed As NamedStyleCollectionEventHandler

'Usage
 
Dim instance As NamedStyleCollection
Dim handler As NamedStyleCollectionEventHandler
 
AddHandler instance.Changed, handler

public event NamedStyleCollectionEventHandler Changed

Event Data

The event handler receives an argument of type NamedStyleCollectionEventArgs containing data related to this event. The following NamedStyleCollectionEventArgs properties provide information specific to this event.

Property	Description
NewStyle	Gets the new style that was added, or null if no style was added.
OldStyle	Gets the old style that was removed or changed, or null if no style was removed or changed.
Type	Gets the type of event that occurred.

Example

This example causes the Changed event to occur for the NamedStyleCollection object.

FarPoint.Web.Spread.NamedStyleCollection nsc;

private void PageLoad(object sender, System.EventArgs e)
{
    this.nsc = new FarPoint.Web.Spread.NamedStyleCollection();
    this.nsc.Changed += new FarPoint.Web.Spread.NamedStyleCollectionEventHandler(this.nscChanged);
    FarPoint.Web.Spread.NamedStyle ns = new FarPoint.Web.Spread.NamedStyle("StyleData", "DataAreaDefault");
    FarPoint.Web.Spread.NamedStyle ns1 = new FarPoint.Web.Spread.NamedStyle("HeaderData", "HeaderDefault");
    ns.BackColor = Color.Yellow;
    ns.Border = new FarPoint.Web.Spread.Border(BorderStyle.Double, Color.Blue);
    ns1.BackColor = Color.Teal;
    ns1.Border = new FarPoint.Web.Spread.Border(BorderStyle.Double, Color.Red);
    nsc.AddRange(new Object[] {ns, ns1});
    FpSpread1.NamedStyles.Add(ns1);
    FpSpread1.ActiveSheetView.ColumnHeader.DefaultStyle = ns1;
    if(IsPostBack)
    {
        nsc.Remove(ns1);
        IEnumerator ie = nsc.GetEnumerator();
        foreach(FarPoint.Web.Spread.NamedStyle n in nsc)
        {
            ie.MoveNext();
            FpSpread1.NamedStyles.Add((FarPoint.Web.Spread.NamedStyle)ie.Current);
            FpSpread1.ActiveSheetView.ColumnHeader.DefaultStyle = (FarPoint.Web.Spread.NamedStyle)ie.Current;
        }
    }
}

private void nscChanged(object sender, FarPoint.Web.Spread.NamedStyleCollectionEventArgs e)
{
    TextBox1.Text = "The collection has changed!!";
}

Visual Basic

Friend WithEvents nsc As FarPoint.Web.Spread.NamedStyleCollection

Private Sub PageLoad(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
    nsc = New FarPoint.Web.Spread.NamedStyleCollection
    Dim ns As New FarPoint.Web.Spread.NamedStyle("StyleData", "DataAreaDefault")
    Dim ns1 As New FarPoint.Web.Spread.NamedStyle("HeaderData", "HeaderDefault")
    Dim n As FarPoint.Web.Spread.NamedStyle
    ns.BackColor = Color.Yellow
    ns.Border = New FarPoint.Web.Spread.Border(BorderStyle.Double, Color.Blue)
    ns1.BackColor = Color.Teal
    ns1.Border = New FarPoint.Web.Spread.Border(BorderStyle.Double, Color.Red)
    nsc.AddRange(New Object() {ns, ns1})
    FpSpread1.NamedStyles.Add(ns1)
    FpSpread1.ActiveSheetView.ColumnHeader.DefaultStyle = ns1
    If IsPostBack Then
        nsc.Remove(ns1)
        Dim ie As IEnumerator = nsc.GetEnumerator
        For Each n In nsc
            ie.MoveNext()
            FpSpread1.NamedStyles.Add(ie.Current)
           FpSpread1.ActiveSheetView.ColumnHeader.DefaultStyle = ie.Current
        Next
    End If
End Sub

Private Sub nscChanged(ByVal sender As Object, ByVal e As FarPoint.Web.Spread.NamedStyleCollectionEventArgs) Handles nsc.Changed
    TextBox1.Text = "The collection has changed!!"
End Sub

Reference

NamedStyleCollection Class
NamedStyleCollection Members

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