Control.Anchor Property
Gets or sets the edges of the container to which a control is bound and determines how a control is resized with its parent.
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
Property Value
Type: System.Windows.Forms.AnchorStylesA bitwise combination of the AnchorStyles values. The default is Top and Left.
Use the Anchor property to define how a control is automatically resized as its parent control is resized. Anchoring a control to its parent control ensures that the anchored edges remain in the same position relative to the edges of the parent control when the parent control is resized.
You can anchor a control to one or more edges of its container. For example, if you have a Form with a Button whose Anchor property value is set to Top and Bottom, the Button is stretched to maintain the anchored distance to the top and bottom edges of the Form as the Height of the Form is increased.
Note
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The Anchor and Dock properties are mutually exclusive. Only one can be set at a time, and the last one set takes precedence. |
Notes to Inheritors
When overriding the Anchor property in a derived class, use the base class's Anchor property to extend the base implementation. Otherwise, you must provide all the implementation. You are not required to override both the get and set accessors of the Anchor property; you can override only one if needed.
The following code example adds a Button to a form and sets some of its common properties. The example anchors the button to the bottom-right corner of the form so it keeps its relative position as the form is resized. Next it sets the BackgroundImage and resizes the button to the same size as the Image. The example then sets the TabStop to true and sets the TabIndex property. Lastly, it adds an event handler to handle the Click event of the button. This example requires that you have an ImageList named imageList1.
// Add a button to a form and set some of its common properties. private void AddMyButton() { // Create a button and add it to the form. Button button1 = new Button(); // Anchor the button to the bottom right corner of the form button1.Anchor = (AnchorStyles.Bottom | AnchorStyles.Right); // Assign a background image. button1.BackgroundImage = imageList1.Images[0]; // Specify the layout style of the background image. Tile is the default. button1.BackgroundImageLayout = ImageLayout.Center; // Make the button the same size as the image. button1.Size = button1.BackgroundImage.Size; // Set the button's TabIndex and TabStop properties. button1.TabIndex = 1; button1.TabStop = true; // Add a delegate to handle the Click event. button1.Click += new System.EventHandler(this.button1_Click); // Add the button to the form. this.Controls.Add(button1); }
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
' Navigates to the URL in the address box when
' the ENTER key is pressed while the ToolStripTextBox has focus.
Private Sub toolStripTextBox1_KeyDown( _
ByVal sender As Object, ByVal e As KeyEventArgs) _
Handles toolStripTextBox1.KeyDown
If (e.KeyCode = Keys.Enter) Then
Navigate(toolStripTextBox1.Text)
End If
End Sub
' Navigates to the URL in the address box when
' the Go button is clicked.
Private Sub goButton_Click( _
ByVal sender As Object, ByVal e As EventArgs) _
Handles goButton.Click
Navigate(toolStripTextBox1.Text)
End Sub
' Navigates to the given URL if it is valid.
Private Sub Navigate(ByVal address As String)
If String.IsNullOrEmpty(address) Then Return
If address.Equals("about:blank") Then Return
If Not address.StartsWith("http://") And _
Not address.StartsWith("https://") Then
address = "http://" & address
End If
Try
webBrowser1.Navigate(New Uri(address))
Catch ex As System.UriFormatException
Return
End Try
End Sub
' Updates the URL in TextBoxAddress upon navigation.
Private Sub webBrowser1_Navigated(ByVal sender As Object, _
ByVal e As WebBrowserNavigatedEventArgs) _
Handles webBrowser1.Navigated
toolStripTextBox1.Text = webBrowser1.Url.ToString()
End Sub
- 1/10/2011
- andisthermal123456789
