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Como ancorar e encaixar controles filho em um controle FlowLayoutPanel

O FlowLayoutPanel controle oferece suporte às Anchor propriedades e Dock em seus controles filho.

Ancorar e encaixar controles filho em um controle FlowLayoutPanel

  1. Crie um FlowLayoutPanel controle em seu formulário.

  2. Defina o do controle como 300 e defina-o FlowDirectionWidth como TopDown.FlowLayoutPanel

  3. Crie dois Button controles e coloque-os FlowLayoutPanel no controle.

  4. Defina o Width do primeiro botão como 200.

  5. Defina a Dock propriedade do segundo botão como Fill.

    Observação

    O segundo botão assume a mesma largura que o primeiro. Ele não se estende por toda a largura do FlowLayoutPanel controle.

  6. Defina a Dock propriedade do segundo botão como None. Isso faz com que o botão assuma a largura original.

  7. Defina a Anchor propriedade do segundo botão como Left, Right.

    Importante

    O segundo botão assume a mesma largura que o primeiro. Ele não se estende por toda a largura do FlowLayoutPanel controle. Esta é a regra geral para ancoragem e encaixe no FlowLayoutPanel controle: para direções de fluxo vertical, o controle calcula FlowLayoutPanel a largura de uma coluna implícita a partir do controle filho mais largo na coluna. Todos os outros controles nesta coluna com Anchor propriedades ou são alinhados ou Dock esticados para se ajustar a essa coluna implícita. O comportamento funciona de maneira similar a direções de fluxo horizontal. O FlowLayoutPanel controle calcula a altura de uma linha implícita a partir do controle filho mais alto na linha, e todos os controles filho encaixados ou ancorados nessa linha são alinhados ou dimensionados para se ajustar à linha implícita.

Exemplo

A ilustração a seguir mostra quatro botões ancorados e encaixados em relação ao botão azul em um FlowLayoutPanelarquivo . O FlowDirection é LeftToRight.

Screenshot of horizontal FlowLayoutPanel, naming four buttons that are anchored and docked to centered button.

A ilustração a seguir mostra quatro botões ancorados e encaixados em relação ao botão azul em um FlowLayoutPanelarquivo . O FlowDirection é TopDown.

Screenshot of vertical FlowLayoutPanel, naming four buttons that are anchored and docked to centered button.

O exemplo de código a seguir demonstra vários Anchor valores de propriedade para um controle em um ButtonFlowLayoutPanel controle.

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Windows.Forms;

public class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();
    }
    private FlowLayoutPanel flowLayoutPanel3;
    private Label label2;
    private Button button11;
    private Button button12;
    private Button button13;
    private Button button14;
    private Button button15;
    private FlowLayoutPanel flowLayoutPanel1;
    private Label label1;
    private Button button1;
    private Button button2;
    private Button button3;
    private Button button4;
    private Button button5;

    private System.ComponentModel.IContainer components = null;

    protected override void Dispose(bool disposing)
    {
        if (disposing && (components != null))
        {
            components.Dispose();
        }
        base.Dispose(disposing);
    }

    private void InitializeComponent()
    {
        this.flowLayoutPanel3 = new System.Windows.Forms.FlowLayoutPanel();
        this.label2 = new System.Windows.Forms.Label();
        this.button11 = new System.Windows.Forms.Button();
        this.button12 = new System.Windows.Forms.Button();
        this.button13 = new System.Windows.Forms.Button();
        this.button14 = new System.Windows.Forms.Button();
        this.button15 = new System.Windows.Forms.Button();
        this.flowLayoutPanel1 = new System.Windows.Forms.FlowLayoutPanel();
        this.label1 = new System.Windows.Forms.Label();
        this.button1 = new System.Windows.Forms.Button();
        this.button2 = new System.Windows.Forms.Button();
        this.button3 = new System.Windows.Forms.Button();
        this.button4 = new System.Windows.Forms.Button();
        this.button5 = new System.Windows.Forms.Button();
        this.flowLayoutPanel3.SuspendLayout();
        this.flowLayoutPanel1.SuspendLayout();
        this.SuspendLayout();
        //
        // flowLayoutPanel3
        //
        this.flowLayoutPanel3.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
                    | System.Windows.Forms.AnchorStyles.Left)
                    | System.Windows.Forms.AnchorStyles.Right)));
        this.flowLayoutPanel3.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
        this.flowLayoutPanel3.Controls.Add(this.label2);
        this.flowLayoutPanel3.Controls.Add(this.button11);
        this.flowLayoutPanel3.Controls.Add(this.button12);
        this.flowLayoutPanel3.Controls.Add(this.button13);
        this.flowLayoutPanel3.Controls.Add(this.button14);
        this.flowLayoutPanel3.Controls.Add(this.button15);
        this.flowLayoutPanel3.Location = new System.Drawing.Point(12, 12);
        this.flowLayoutPanel3.Name = "flowLayoutPanel3";
        this.flowLayoutPanel3.Size = new System.Drawing.Size(631, 100);
        this.flowLayoutPanel3.TabIndex = 2;
        //
        // label2
        //
        this.label2.Anchor = System.Windows.Forms.AnchorStyles.None;
        this.label2.AutoSize = true;
        this.label2.Location = new System.Drawing.Point(3, 28);
        this.label2.Name = "label2";
        this.label2.Size = new System.Drawing.Size(138, 14);
        this.label2.TabIndex = 10;
        this.label2.Text = "FlowDirection=LeftToRight";
        //
        // button11
        //
        this.button11.Anchor = System.Windows.Forms.AnchorStyles.Bottom;
        this.button11.AutoSize = true;
        this.button11.Location = new System.Drawing.Point(147, 44);
        this.button11.Name = "button11";
        this.button11.Size = new System.Drawing.Size(86, 23);
        this.button11.TabIndex = 5;
        this.button11.Text = "Anchor=Bottom";
        //
        // button12
        //
        this.button12.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)));
        this.button12.AutoSize = true;
        this.button12.Location = new System.Drawing.Point(239, 3);
        this.button12.Name = "button12";
        this.button12.Size = new System.Drawing.Size(111, 64);
        this.button12.TabIndex = 6;
        this.button12.Text = "Anchor=Top, Bottom";
        //
        // button13
        //
        this.button13.Anchor = System.Windows.Forms.AnchorStyles.None;
        this.button13.BackColor = System.Drawing.SystemColors.GradientActiveCaption;
        this.button13.Location = new System.Drawing.Point(356, 3);
        this.button13.Name = "button13";
        this.button13.Size = new System.Drawing.Size(75, 64);
        this.button13.TabIndex = 7;
        //
        // button14
        //
        this.button14.Dock = System.Windows.Forms.DockStyle.Bottom;
        this.button14.Location = new System.Drawing.Point(437, 44);
        this.button14.Name = "button14";
        this.button14.TabIndex = 8;
        this.button14.Text = "Dock=Bottom";
        //
        // button15
        //
        this.button15.Dock = System.Windows.Forms.DockStyle.Fill;
        this.button15.Location = new System.Drawing.Point(518, 3);
        this.button15.Name = "button15";
        this.button15.Size = new System.Drawing.Size(75, 64);
        this.button15.TabIndex = 9;
        this.button15.Text = "Dock=Fill";
        //
        // flowLayoutPanel1
        //
        this.flowLayoutPanel1.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left)
                    | System.Windows.Forms.AnchorStyles.Right)));
        this.flowLayoutPanel1.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
        this.flowLayoutPanel1.Controls.Add(this.label1);
        this.flowLayoutPanel1.Controls.Add(this.button1);
        this.flowLayoutPanel1.Controls.Add(this.button2);
        this.flowLayoutPanel1.Controls.Add(this.button3);
        this.flowLayoutPanel1.Controls.Add(this.button4);
        this.flowLayoutPanel1.Controls.Add(this.button5);
        this.flowLayoutPanel1.FlowDirection = System.Windows.Forms.FlowDirection.TopDown;
        this.flowLayoutPanel1.Location = new System.Drawing.Point(12, 118);
        this.flowLayoutPanel1.Name = "flowLayoutPanel1";
        this.flowLayoutPanel1.Size = new System.Drawing.Size(200, 209);
        this.flowLayoutPanel1.TabIndex = 3;
        //
        // label1
        //
        this.label1.AutoSize = true;
        this.label1.Location = new System.Drawing.Point(3, 3);
        this.label1.Name = "label1";
        this.label1.Size = new System.Drawing.Size(128, 14);
        this.label1.TabIndex = 11;
        this.label1.Text = "FlowDirection=TopDown";
        //
        // button1
        //
        this.button1.Anchor = System.Windows.Forms.AnchorStyles.Right;
        this.button1.Location = new System.Drawing.Point(74, 23);
        this.button1.Name = "button1";
        this.button1.TabIndex = 5;
        this.button1.Text = "Anchor=Right";
        //
        // button2
        //
        this.button2.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Left | System.Windows.Forms.AnchorStyles.Right)));
        this.button2.Location = new System.Drawing.Point(3, 52);
        this.button2.Name = "button2";
        this.button2.Size = new System.Drawing.Size(146, 23);
        this.button2.TabIndex = 6;
        this.button2.Text = "Anchor=Left, Right";
        //
        // button3
        //
        this.button3.BackColor = System.Drawing.SystemColors.GradientActiveCaption;
        this.button3.Location = new System.Drawing.Point(3, 81);
        this.button3.Name = "button3";
        this.button3.Size = new System.Drawing.Size(146, 23);
        this.button3.TabIndex = 7;
        //
        // button4
        //
        this.button4.Dock = System.Windows.Forms.DockStyle.Right;
        this.button4.Location = new System.Drawing.Point(74, 110);
        this.button4.Name = "button4";
        this.button4.TabIndex = 8;
        this.button4.Text = "Dock=Right";
        //
        // button5
        //
        this.button5.Dock = System.Windows.Forms.DockStyle.Fill;
        this.button5.Location = new System.Drawing.Point(3, 139);
        this.button5.Name = "button5";
        this.button5.Size = new System.Drawing.Size(146, 23);
        this.button5.TabIndex = 9;
        this.button5.Text = "Dock=Fill";
        //
        // Form1
        //
        this.ClientSize = new System.Drawing.Size(658, 341);
        this.Controls.Add(this.flowLayoutPanel1);
        this.Controls.Add(this.flowLayoutPanel3);
        this.Name = "Form1";
        this.Text = "Form1";
        this.flowLayoutPanel3.ResumeLayout(false);
        this.flowLayoutPanel3.PerformLayout();
        this.flowLayoutPanel1.ResumeLayout(false);
        this.flowLayoutPanel1.PerformLayout();
        this.ResumeLayout(false);
    }

    [STAThread]
    static void Main()
    {
        Application.EnableVisualStyles();
        Application.Run(new Form1());
    }
}
Imports System.Collections.Generic
Imports System.ComponentModel
Imports System.Drawing
Imports System.Windows.Forms




Public Class Form1
   Inherits Form
   
   Public Sub New()
      InitializeComponent()
   End Sub
   Private flowLayoutPanel3 As FlowLayoutPanel
   Private label2 As Label
   Private button11 As Button
   Private button12 As Button
   Private button13 As Button
   Private button14 As Button
   Private button15 As Button
   Private flowLayoutPanel1 As FlowLayoutPanel
   Private label1 As Label
   Private button1 As Button
   Private button2 As Button
   Private button3 As Button
   Private button4 As Button
   Private button5 As Button
   
   Private components As System.ComponentModel.IContainer = Nothing
   
   
   Protected Overrides Sub Dispose(disposing As Boolean)
      If disposing AndAlso (components IsNot Nothing) Then
         components.Dispose()
      End If
      MyBase.Dispose(disposing)
   End Sub
   
   
   Private Sub InitializeComponent()
      Me.flowLayoutPanel3 = New System.Windows.Forms.FlowLayoutPanel()
      Me.label2 = New System.Windows.Forms.Label()
      Me.button11 = New System.Windows.Forms.Button()
      Me.button12 = New System.Windows.Forms.Button()
      Me.button13 = New System.Windows.Forms.Button()
      Me.button14 = New System.Windows.Forms.Button()
      Me.button15 = New System.Windows.Forms.Button()
      Me.flowLayoutPanel1 = New System.Windows.Forms.FlowLayoutPanel()
      Me.label1 = New System.Windows.Forms.Label()
      Me.button1 = New System.Windows.Forms.Button()
      Me.button2 = New System.Windows.Forms.Button()
      Me.button3 = New System.Windows.Forms.Button()
      Me.button4 = New System.Windows.Forms.Button()
      Me.button5 = New System.Windows.Forms.Button()
      Me.flowLayoutPanel3.SuspendLayout()
      Me.flowLayoutPanel1.SuspendLayout()
      Me.SuspendLayout()
      ' 
      ' flowLayoutPanel3
      ' 
      Me.flowLayoutPanel3.Anchor = CType(System.Windows.Forms.AnchorStyles.Top Or System.Windows.Forms.AnchorStyles.Bottom Or System.Windows.Forms.AnchorStyles.Left Or System.Windows.Forms.AnchorStyles.Right, System.Windows.Forms.AnchorStyles)
      Me.flowLayoutPanel3.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle
      Me.flowLayoutPanel3.Controls.Add(Me.label2)
      Me.flowLayoutPanel3.Controls.Add(Me.button11)
      Me.flowLayoutPanel3.Controls.Add(Me.button12)
      Me.flowLayoutPanel3.Controls.Add(Me.button13)
      Me.flowLayoutPanel3.Controls.Add(Me.button14)
      Me.flowLayoutPanel3.Controls.Add(Me.button15)
      Me.flowLayoutPanel3.Location = New System.Drawing.Point(12, 12)
      Me.flowLayoutPanel3.Name = "flowLayoutPanel3"
      Me.flowLayoutPanel3.Size = New System.Drawing.Size(631, 100)
      Me.flowLayoutPanel3.TabIndex = 2
      ' 
      ' label2
      ' 
      Me.label2.Anchor = System.Windows.Forms.AnchorStyles.None
      Me.label2.AutoSize = True
      Me.label2.Location = New System.Drawing.Point(3, 28)
      Me.label2.Name = "label2"
      Me.label2.Size = New System.Drawing.Size(138, 14)
      Me.label2.TabIndex = 10
      Me.label2.Text = "FlowDirection=LeftToRight"
      ' 
      ' button11
      ' 
      Me.button11.Anchor = System.Windows.Forms.AnchorStyles.Bottom
      Me.button11.AutoSize = True
      Me.button11.Location = New System.Drawing.Point(147, 44)
      Me.button11.Name = "button11"
      Me.button11.Size = New System.Drawing.Size(86, 23)
      Me.button11.TabIndex = 5
      Me.button11.Text = "Anchor=Bottom"
      ' 
      ' button12
      ' 
      Me.button12.Anchor = CType(System.Windows.Forms.AnchorStyles.Top Or System.Windows.Forms.AnchorStyles.Bottom, System.Windows.Forms.AnchorStyles)
      Me.button12.AutoSize = True
      Me.button12.Location = New System.Drawing.Point(239, 3)
      Me.button12.Name = "button12"
      Me.button12.Size = New System.Drawing.Size(111, 64)
      Me.button12.TabIndex = 6
      Me.button12.Text = "Anchor=Top, Bottom"
      ' 
      ' button13
      ' 
      Me.button13.Anchor = System.Windows.Forms.AnchorStyles.None
      Me.button13.BackColor = System.Drawing.SystemColors.GradientActiveCaption
      Me.button13.Location = New System.Drawing.Point(356, 3)
      Me.button13.Name = "button13"
      Me.button13.Size = New System.Drawing.Size(75, 64)
      Me.button13.TabIndex = 7
      ' 
      ' button14
      ' 
      Me.button14.Dock = System.Windows.Forms.DockStyle.Bottom
      Me.button14.Location = New System.Drawing.Point(437, 44)
      Me.button14.Name = "button14"
      Me.button14.TabIndex = 8
      Me.button14.Text = "Dock=Bottom"
      ' 
      ' button15
      ' 
      Me.button15.Dock = System.Windows.Forms.DockStyle.Fill
      Me.button15.Location = New System.Drawing.Point(518, 3)
      Me.button15.Name = "button15"
      Me.button15.Size = New System.Drawing.Size(75, 64)
      Me.button15.TabIndex = 9
      Me.button15.Text = "Dock=Fill"
      ' 
      ' flowLayoutPanel1
      ' 
      Me.flowLayoutPanel1.Anchor = CType(System.Windows.Forms.AnchorStyles.Bottom Or System.Windows.Forms.AnchorStyles.Left Or System.Windows.Forms.AnchorStyles.Right, System.Windows.Forms.AnchorStyles)
      Me.flowLayoutPanel1.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle
      Me.flowLayoutPanel1.Controls.Add(Me.label1)
      Me.flowLayoutPanel1.Controls.Add(Me.button1)
      Me.flowLayoutPanel1.Controls.Add(Me.button2)
      Me.flowLayoutPanel1.Controls.Add(Me.button3)
      Me.flowLayoutPanel1.Controls.Add(Me.button4)
      Me.flowLayoutPanel1.Controls.Add(Me.button5)
      Me.flowLayoutPanel1.FlowDirection = System.Windows.Forms.FlowDirection.TopDown
      Me.flowLayoutPanel1.Location = New System.Drawing.Point(12, 118)
      Me.flowLayoutPanel1.Name = "flowLayoutPanel1"
      Me.flowLayoutPanel1.Size = New System.Drawing.Size(200, 209)
      Me.flowLayoutPanel1.TabIndex = 3
      ' 
      ' label1
      ' 
      Me.label1.AutoSize = True
      Me.label1.Location = New System.Drawing.Point(3, 3)
      Me.label1.Name = "label1"
      Me.label1.Size = New System.Drawing.Size(128, 14)
      Me.label1.TabIndex = 11
      Me.label1.Text = "FlowDirection=TopDown"
      ' 
      ' button1
      ' 
      Me.button1.Anchor = System.Windows.Forms.AnchorStyles.Right
      Me.button1.Location = New System.Drawing.Point(74, 23)
      Me.button1.Name = "button1"
      Me.button1.TabIndex = 5
      Me.button1.Text = "Anchor=Right"
      ' 
      ' button2
      ' 
      Me.button2.Anchor = CType(System.Windows.Forms.AnchorStyles.Left Or System.Windows.Forms.AnchorStyles.Right, System.Windows.Forms.AnchorStyles)
      Me.button2.Location = New System.Drawing.Point(3, 52)
      Me.button2.Name = "button2"
      Me.button2.Size = New System.Drawing.Size(146, 23)
      Me.button2.TabIndex = 6
      Me.button2.Text = "Anchor=Left, Right"
      ' 
      ' button3
      ' 
      Me.button3.BackColor = System.Drawing.SystemColors.GradientActiveCaption
      Me.button3.Location = New System.Drawing.Point(3, 81)
      Me.button3.Name = "button3"
      Me.button3.Size = New System.Drawing.Size(146, 23)
      Me.button3.TabIndex = 7
      ' 
      ' button4
      ' 
      Me.button4.Dock = System.Windows.Forms.DockStyle.Right
      Me.button4.Location = New System.Drawing.Point(74, 110)
      Me.button4.Name = "button4"
      Me.button4.TabIndex = 8
      Me.button4.Text = "Dock=Right"
      ' 
      ' button5
      ' 
      Me.button5.Dock = System.Windows.Forms.DockStyle.Fill
      Me.button5.Location = New System.Drawing.Point(3, 139)
      Me.button5.Name = "button5"
      Me.button5.Size = New System.Drawing.Size(146, 23)
      Me.button5.TabIndex = 9
      Me.button5.Text = "Dock=Fill"
      ' 
      ' Form1
      ' 
      Me.ClientSize = New System.Drawing.Size(658, 341)
      Me.Controls.Add(flowLayoutPanel1)
      Me.Controls.Add(flowLayoutPanel3)
      Me.Name = "Form1"
      Me.Text = "Form1"
      Me.flowLayoutPanel3.ResumeLayout(False)
      Me.flowLayoutPanel3.PerformLayout()
      Me.flowLayoutPanel1.ResumeLayout(False)
      Me.flowLayoutPanel1.PerformLayout()
      Me.ResumeLayout(False)
   End Sub
    
   
   <STAThread()>  _
   Shared Sub Main()
      Application.EnableVisualStyles()
      Application.Run(New Form1())
   End Sub
End Class

Compilando o código

Este exemplo requer:

  • Referências aos assemblies System, System.Data, System.Drawing e System.Windows.Forms.

Confira também