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TextBoxBase.SelectAll Method

Selects all text in the text box.

Namespace: System.Windows.Forms
Assembly: System.Windows.Forms (in system.windows.forms.dll)

public void SelectAll ()
public void SelectAll ()
public function SelectAll ()
Not applicable.

This method enables you to select all text within the control. You can use this method in conjunction with the Cut method, which requires text to be selected in the control, to cut the entire contents of the control and paste them into the Clipboard.

The following code example uses TextBox, a derived class, to determine if any text is selected in the control. If no text is selected, a call is made to the SelectAll method before copying the contents of the control to the Clipboard. This example requires that a TextBox has been created named textBox1.

public void CopyAllMyText()
 {
    // Determine if any text is selected in the TextBox control.
    if(textBox1.SelectionLength == 0)
       // Select all text in the text box.
       textBox1.SelectAll();
    
    // Copy the contents of the control to the Clipboard.
    textBox1.Copy();
 }


public void CopyAllMyText()
{
    // Determine if any text is selected in the TextBox control.
    if (textBox1.get_SelectionLength() == 0) {
        // Select all text in the text box.
        textBox1.SelectAll();
    }
    // Copy the contents of the control to the Clipboard.
    textBox1.Copy();
} //CopyAllMyText

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0

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