TabControl.TabPageCollection.IsReadOnly Eigenschaft

Definition

Namespace:

System.Windows.Forms

Assembly:

System.Windows.Forms.dll

Ruft einen Wert ab, der angibt, ob die Auflistung schreibgeschützt ist.

public:
 property bool IsReadOnly { bool get(); };

public bool IsReadOnly { get; }

member this.IsReadOnly : bool

Public ReadOnly Property IsReadOnly As Boolean

Eigenschaftswert

Boolean

Diese Eigenschaft gibt immer false zurück.

Implementiert

IsReadOnly

Beispiele

Im folgenden Codebeispiel wird ein TabControl Mit zwei TabPageerstellt. In diesem Beispiel wird die tabControl1 Steuerelementsammlung aufgerufen und bestimmt, ob die Eigenschaft schreibgeschützt ist IsReadOnly .

using namespace System::Drawing;
using namespace System::Windows::Forms;
public ref class Form1: public Form
{
public:
   Form1()
   {
      TabControl^ tabControl1 = gcnew TabControl;
      TabPage^ tabPage1 = gcnew TabPage;
      TabPage^ tabPage2 = gcnew TabPage;
      Label^ label1 = gcnew Label;
      
      // Determines if the tabControl1 controls collection is read-only.
      if ( tabControl1->TabPages->IsReadOnly == true )
            label1->Text = "The tabControl1 controls collection is read-only.";
      else
            label1->Text = "The tabControl1 controls collection is not read-only.";

      array<TabPage^>^tabPages = {tabPage1,tabPage2};
      tabControl1->TabPages->AddRange( tabPages );
      tabControl1->Location = Point(25,75);
      tabControl1->Size = System::Drawing::Size( 250, 200 );
      label1->Location = Point(25,25);
      label1->Size = System::Drawing::Size( 250, 25 );
      this->ClientSize = System::Drawing::Size( 300, 300 );
      array<Control^>^formControls = {tabControl1,label1};
      this->Controls->AddRange( formControls );
   }

};

int main()
{
   Application::Run( gcnew Form1 );
}

using System.Drawing;
using System.Windows.Forms;

public class Form1 : Form
{
    public Form1()
    {
        TabControl tabControl1 = new TabControl();
        TabPage tabPage1 = new TabPage();
        TabPage tabPage2 = new TabPage();
        Label label1 = new Label();

        // Determines if the tabControl1 controls collection is read-only.
        if (tabControl1.TabPages.IsReadOnly == true)
            label1.Text = "The tabControl1 controls collection is read-only.";
        else
            label1.Text = "The tabControl1 controls collection is not read-only.";

        tabControl1.TabPages.AddRange(new TabPage[] {tabPage1, tabPage2});
        tabControl1.Location = new Point(25, 75);
        tabControl1.Size = new Size(250, 200);

        label1.Location = new Point(25, 25);
        label1.Size = new Size(250, 25);

        this.ClientSize = new Size(300, 300);
        this.Controls.AddRange(new Control[] {tabControl1, label1});
    }

    static void Main() 
    {
        Application.Run(new Form1());
    }
}

Imports System.Drawing
Imports System.Windows.Forms

Public Class Form1
    Inherits Form

    Public Sub New()
        Dim tabControl1 As New TabControl()
        Dim tabPage1 As New TabPage()
        Dim tabPage2 As New TabPage()
        Dim label1 As New Label()

        ' Determines if the tabControl1 controls collection is read-only.
        If tabControl1.TabPages.IsReadOnly = True Then
            label1.Text = "The tabControl1 controls collection is read-only."
        Else
            label1.Text = "The tabControl1 controls collection is not read-only."
        End If
        tabControl1.TabPages.AddRange(New TabPage() {tabPage1, tabPage2})
        tabControl1.Location = New Point(25, 75)
        tabControl1.Size = New Size(250, 200)

        label1.Location = New Point(25, 25)
        label1.Size = New Size(250, 25)

        Me.ClientSize = New Size(300, 300)
        Me.Controls.AddRange(New Control() {tabControl1, label1})
    End Sub

    Shared Sub Main()
        Application.Run(New Form1())
    End Sub
End Class