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.NET Development
.NET Framework 4
Control Class
Control Properties
 Left Property
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.NET Framework Class Library
Control..::.Left Property

Gets or sets the distance, in pixels, between the left edge of the control and the left edge of its container's client area.

Namespace:  System.Windows.Forms
Assembly:  System.Windows.Forms (in System.Windows.Forms.dll)
Visual Basic
<BrowsableAttribute(False)> _
Public Property Left As Integer
C#
[BrowsableAttribute(false)]
public int Left { get; set; }
Visual C++
[BrowsableAttribute(false)]
public:
property int Left {
    int get ();
    void set (int value);
}
F#
[<BrowsableAttribute(false)>]
member Left : int with get, set

Property Value

Type: System..::.Int32
An Int32 representing the distance, in pixels, between the left edge of the control and the left edge of its container's client area.

The Left property value is equivalent to the Point..::.X property of the Location property value of the control.

Changes made to the Width and Left property values cause the Right property value of the control to change.

The following code example creates three Button controls on a form and sets their size and location by using the various size-related and location-related properties. This example requires that you have a Form that has a width and height of at least 300 pixels.

Visual Basic
' Create three buttons and place them on a form using 
' several size and location related properties. 
Private Sub AddOKCancelButtons()
   ' Set the button size and location using 
      ' the Size and Location properties. 
   Dim buttonOK As New Button()
   buttonOK.Location = New Point(136, 248)
   buttonOK.Size = New Size(75, 25)
   ' Set the Text property and make the 
   ' button the form's default button. 
   buttonOK.Text = "&OK"
   Me.AcceptButton = buttonOK

   ' Set the button size and location using the Top, 
   ' Left, Width, and Height properties. 
   Dim buttonCancel As New Button()
   buttonCancel.Top = buttonOK.Top
   buttonCancel.Left = buttonOK.Right + 5
   buttonCancel.Width = buttonOK.Width
   buttonCancel.Height = buttonOK.Height
   ' Set the Text property and make the 
   ' button the form's cancel button. 
   buttonCancel.Text = "&Cancel"
   Me.CancelButton = buttonCancel

   ' Set the button size and location using 
   ' the Bounds property. 
   Dim buttonHelp As New Button()
   buttonHelp.Bounds = New Rectangle(10, 10, 75, 25)
   ' Set the Text property of the button.
   buttonHelp.Text = "&Help"

   ' Add the buttons to the form.
   Me.Controls.AddRange(New Control() {buttonOK, buttonCancel, buttonHelp})
End Sub
C#
// Create three buttons and place them on a form using 
// several size and location related properties. 
private void AddOKCancelButtons()
{
   // Set the button size and location using 
   // the Size and Location properties.
   Button buttonOK = new Button();
   buttonOK.Location = new Point(136,248);
   buttonOK.Size = new Size(75,25);
   // Set the Text property and make the 
   // button the form's default button. 
   buttonOK.Text = "&OK";
   this.AcceptButton = buttonOK;

   // Set the button size and location using the Top, 
   // Left, Width, and Height properties.
   Button buttonCancel = new Button();
   buttonCancel.Top = buttonOK.Top;
   buttonCancel.Left = buttonOK.Right + 5;
   buttonCancel.Width = buttonOK.Width;
   buttonCancel.Height = buttonOK.Height;
   // Set the Text property and make the 
   // button the form's cancel button.
   buttonCancel.Text = "&Cancel";
   this.CancelButton = buttonCancel;

   // Set the button size and location using 
   // the Bounds property.
   Button buttonHelp = new Button();
   buttonHelp.Bounds = new Rectangle(10,10, 75, 25);
   // Set the Text property of the button.
   buttonHelp.Text = "&Help";

   // Add the buttons to the form.
   this.Controls.AddRange(new Control[] {buttonOK, buttonCancel, buttonHelp} );
}
Visual C++
// Create three buttons and place them on a form using
// several size and location related properties.
void AddOKCancelButtons()
{

   // Set the button size and location using
   // the Size and Location properties.
   Button^ buttonOK = gcnew Button;
   buttonOK->Location = Point(136,248);
   buttonOK->Size = System::Drawing::Size( 75, 25 );

   // Set the Text property and make the
   // button the form's default button.
   buttonOK->Text = "&OK";
   this->AcceptButton = buttonOK;

   // Set the button size and location using the Top,
   // Left, Width, and Height properties.
   Button^ buttonCancel = gcnew Button;
   buttonCancel->Top = buttonOK->Top;
   buttonCancel->Left = buttonOK->Right + 5;
   buttonCancel->Width = buttonOK->Width;
   buttonCancel->Height = buttonOK->Height;

   // Set the Text property and make the
   // button the form's cancel button.
   buttonCancel->Text = "&Cancel";
   this->CancelButton = buttonCancel;

   // Set the button size and location using
   // the Bounds property.
   Button^ buttonHelp = gcnew Button;
   buttonHelp->Bounds = Rectangle(10,10,75,25);

   // Set the Text property of the button.
   buttonHelp->Text = "&Help";

   // Add the buttons to the form.
   array<Control^>^temp1 = {buttonOK,buttonCancel,buttonHelp};
   this->Controls->AddRange( temp1 );
}

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

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.
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