BackHistory プロパティ

以前にナビゲートした項目を表す列挙可能なコレクションを取得します。

シンタックス

Visual Basic

'宣言
 
Public ReadOnly Property BackHistory As IEnumerable(Of NavigationHistoryItem)

C#

public IEnumerable<NavigationHistoryItem> BackHistory {get;}

使用例

Visual Basic

Imports System.Xml
Imports Infragistics.Win.UltraWinToolbars

Private Sub btnSaveHistory_Click(ByVal sender As Object, ByVal e As EventArgs)
	Dim writer As XmlTextWriter = Nothing

	Try
		writer = New XmlTextWriter("History.xml", Nothing)
		writer.Formatting = Formatting.Indented
		writer.Namespaces = False
		writer.WriteStartDocument()
		writer.WriteStartElement("History")

		' Serialize the back history
		If Me.UltraToolbarsManager1.NavigationToolbar.BackHistoryCount > 0 Then
			writer.WriteStartElement("BackHistory")
			Dim backHistoryItem As NavigationHistoryItem
			For Each backHistoryItem In Me.UltraToolbarsManager1.NavigationToolbar.BackHistory
				writer.WriteStartElement("Item")
				writer.WriteString(backHistoryItem.Text)
				writer.WriteEndElement()
			Next
			writer.WriteEndElement()
		End If

		' Serialize the current item
		Dim currentItem As NavigationHistoryItem = Me.UltraToolbarsManager1.NavigationToolbar.CurrentItem
		If Not currentItem Is Nothing Then
			writer.WriteStartElement("CurrentItem")
			writer.WriteString(currentItem.Text)
			writer.WriteEndElement()
		End If

		' Serialize the forward history
		If Me.UltraToolbarsManager1.NavigationToolbar.ForwardHistoryCount > 0 Then
			writer.WriteStartElement("ForwardHistory")
			Dim forwardHistoryItem As NavigationHistoryItem
			For Each forwardHistoryItem In Me.UltraToolbarsManager1.NavigationToolbar.ForwardHistory
				writer.WriteStartElement("Item")
				writer.WriteString(forwardHistoryItem.Text)
				writer.WriteEndElement()
			Next
			writer.WriteEndElement()
		End If

		writer.WriteEndElement()
		writer.WriteEndDocument()
		writer.Flush()
	Catch ex As Exception
		MessageBox.Show("Could not serialize history\n\n" + ex.Message)
	Finally
		If Not writer Is Nothing Then
			writer.Close()
		End If
	End Try
End Sub

C#

using System.Xml;
using Infragistics.Win.UltraWinToolbars;

private void btnSaveHistory_Click(object sender, EventArgs e)
{
    XmlTextWriter writer = null;
    try
    {
        writer = new XmlTextWriter("History.xml", null);
        writer.Formatting = Formatting.Indented;
        writer.Namespaces = false;
        writer.WriteStartDocument();
        writer.WriteStartElement("History");

        // Serialize the back history
        if (this.ultraToolbarsManager1.NavigationToolbar.BackHistoryCount > 0)
        {
            writer.WriteStartElement("BackHistory");
            foreach (NavigationHistoryItem backHistoryItem in this.ultraToolbarsManager1.NavigationToolbar.BackHistory)
            {
                writer.WriteStartElement("Item");                        
                writer.WriteString(backHistoryItem.Text);
                writer.WriteEndElement();
            }
            writer.WriteEndElement();
        }

        // Serialize the current item
        NavigationHistoryItem currentItem = this.ultraToolbarsManager1.NavigationToolbar.CurrentItem;
        if (currentItem != null)
        {
            writer.WriteStartElement("CurrentItem");
            writer.WriteString(currentItem.Text);
            writer.WriteEndElement();
        }

        // Serialize the forward history
        if (this.ultraToolbarsManager1.NavigationToolbar.ForwardHistoryCount > 0)
        {
            writer.WriteStartElement("ForwardHistory");
            foreach (NavigationHistoryItem forwardHistoryItem in this.ultraToolbarsManager1.NavigationToolbar.ForwardHistory)
            {
                writer.WriteStartElement("Item");
                writer.WriteString(forwardHistoryItem.Text);
                writer.WriteEndElement();
            }
            writer.WriteEndElement();
        }

        writer.WriteEndElement();
        writer.WriteEndDocument();
        writer.Flush();
    }
    catch (Exception ex)
    {
        MessageBox.Show("Could not serialize history\n\n" + ex.Message);
    }
    finally
    {
        if (writer != null)
            writer.Close();
    }
}