TreeNode.Checked Properti

Definisi

Ruang nama:

System.Windows.Forms

Rakitan:

System.Windows.Forms.dll

Sumber:

TreeNode.cs

Mendapatkan atau menetapkan nilai yang menunjukkan apakah simpul pohon dalam keadaan diperiksa.

public:
 property bool Checked { bool get(); void set(bool value); };

public bool Checked { get; set; }

member this.Checked : bool with get, set

Public Property Checked As Boolean

Nilai Properti

Boolean

true jika simpul pohon dalam keadaan diperiksa; jika tidak, false.

Contoh

Contoh kode berikut menyoroti objek apa pun TreeNode yang memiliki propertinya Checked diatur ke true dengan mengatur propertinya BackColor ke Yellow.TreeView Kode ini mengharuskan Anda memiliki TreeView kontrol pada dengan Form kumpulan TreeNode objek.

public:
   void HighlightCheckedNodes()
   {
      int countIndex = 0;
      String^ selectedNode = "Selected customer nodes are : ";
      IEnumerator^ myEnum = myTreeView->Nodes[ 0 ]->Nodes->GetEnumerator();
      while ( myEnum->MoveNext() )
      {
         TreeNode^ myNode = safe_cast<TreeNode^>(myEnum->Current);
         
         // Check whether the tree node is checked.
         if ( myNode->Checked )
         {
            
            // Set the node's backColor.
            myNode->BackColor = Color::Yellow;
            selectedNode = String::Concat( selectedNode, myNode->Text, " " );
            countIndex++;
         }
         else
                  myNode->BackColor = Color::White;
      }

      if ( countIndex > 0 )
            MessageBox::Show( selectedNode );
      else
            MessageBox::Show( "No nodes are selected" );
   }

public void HighlightCheckedNodes()
{
   int countIndex = 0;
   string selectedNode = "Selected customer nodes are : ";
   foreach (TreeNode myNode in myTreeView.Nodes[0].Nodes)
   {
      // Check whether the tree node is checked.
      if(myNode.Checked)
      {
         // Set the node's backColor.
         myNode.BackColor = Color.Yellow;
         selectedNode += myNode.Text+" ";
         countIndex++;
      }
      else
            {
                myNode.BackColor = Color.White;
            }
        }

   if(countIndex > 0)
      MessageBox.Show(selectedNode);
   else
      MessageBox.Show("No nodes are selected");
}

Public Sub HighlightCheckedNodes()
   Dim countIndex As Integer = 0
   Dim selectedNode As String = "Selected customer nodes are : "
   Dim myNode As TreeNode
   For Each myNode In  myTreeView.Nodes(0).Nodes
      ' Check whether the tree node is checked.
      If myNode.Checked Then
         ' Set the node's backColor.
         myNode.BackColor = Color.Yellow
         selectedNode += myNode.Text + " "
         countIndex += 1
      Else
         myNode.BackColor = Color.White
      End If
   Next myNode

   If countIndex > 0 Then
      MessageBox.Show(selectedNode)
   Else
      MessageBox.Show("No nodes are selected")
   End If
End Sub

Lihat juga

• CheckBoxes