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Window.RestoreBounds Property

Gets the size and location of a window before being either minimized or maximized.

Namespace:  System.Windows
Assembly:  PresentationFramework (in PresentationFramework.dll)

public Rect RestoreBounds { get; }
You cannot set this property in XAML.

Property Value

Type: System.Windows.Rect
A Rect that specifies the size and location of a window before being either minimized or maximized.

The restore rectangle is the region occupied by the window before it was minimized or maximized. You can use RestoreBounds to save the last size and location of a window before an application is closed, and retrieve those values the next time an application starts to restore a window to the way a user left it.

If you query RestoreBounds before the window has been shown or after it has been closed, Empty is returned.


You cannot get this property when a window is hosted in a browser.

The following example uses RestoreBounds and isolated storage to ensure the size and location of a window are the same as they were the previous time the window was shown.

<Window x:Class="WindowRestoreBoundsSnippets.MainWindow"


using System;
using System.ComponentModel;
using System.IO;
using System.IO.IsolatedStorage;
using System.Windows;


public partial class MainWindow : Window {

  string filename = "settings.txt";

  public MainWindow() {

    // Refresh restore bounds from previous window opening
    IsolatedStorageFile storage = IsolatedStorageFile.GetUserStoreForAssembly();
    try {
      using (IsolatedStorageFileStream stream = new IsolatedStorageFileStream(this.filename, FileMode.Open, storage))
      using (StreamReader reader = new StreamReader(stream)) {

        // Read restore bounds value from file
        Rect restoreBounds = Rect.Parse(reader.ReadLine());
        this.Left = restoreBounds.Left;
        this.Top = restoreBounds.Top;
        this.Width = restoreBounds.Width;
        this.Height = restoreBounds.Height;
    catch (FileNotFoundException ex) {
      // Handle when file is not found in isolated storage, which is when:
      // * This is first application session
      // * The file has been deleted


  void MainWindow_Closing(object sender, CancelEventArgs e) {
    // Save restore bounds for the next time this window is opened
    IsolatedStorageFile storage = IsolatedStorageFile.GetUserStoreForAssembly();
    using (IsolatedStorageFileStream stream = new IsolatedStorageFileStream(this.filename, FileMode.Create, storage))
    using (StreamWriter writer = new StreamWriter(stream)) {
      // Write restore bounds value to file

  • UIPermission 

    for permission to query for the size and location of a window's bounding rectangle. Associated enumeration: AllWindows

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0