DataGridCell.GetHashCode Metodo

Definizione

Spazio dei nomi:

System.Windows.Forms

Assembly:

System.Windows.Forms.dll

Ottiene un valore hash che è possibile aggiungere a un oggetto Hashtable.

public:
 override int GetHashCode();

public override int GetHashCode ();

override this.GetHashCode : unit -> int

Public Overrides Function GetHashCode () As Integer

Restituisce

Int32

Numero che identifica in modo univoco l'oggetto DataGridCell in un oggetto Hashtable.

Esempio

Nell'esempio seguente viene aggiunto il valore hash della cella selezionata in un System.Windows.Forms.DataGrid controllo a un Hashtableoggetto .

private:
   Hashtable^ myHashTable;

public:
   Form1()
   {
      myHashTable = gcnew Hashtable;
   }

private:
   void Grid_MouseUp( Object^ sender, System::Windows::Forms::MouseEventArgs^ /*e*/ )
   {
      DataGrid^ dg = dynamic_cast<DataGrid^>(sender);
      DataGridCell myCell = dg->CurrentCell;
      String^ tempkey = myCell.ToString();
      Console::WriteLine( "Temp {0}", tempkey );
      if ( myHashTable->Contains( tempkey ) )
      {
         return;
      }
      myHashTable->Add( tempkey, myCell.GetHashCode() );
      Console::WriteLine( "Hashcode: {0}", myCell.GetHashCode() );
   }

private Hashtable myHashTable = new Hashtable();

private void Grid_MouseUp(object sender, System.Windows.Forms.MouseEventArgs e)
{
   DataGrid dg = (DataGrid)sender;
   DataGridCell myCell = dg.CurrentCell;
   string tempkey = myCell.ToString();
   Console.WriteLine("Temp " + tempkey);
   if(myHashTable.Contains(tempkey)){return;}
   myHashTable.Add(tempkey, myCell.GetHashCode());
   Console.WriteLine("Hashcode: " + myCell.GetHashCode().ToString());
}

Private myHashTable As New Hashtable()

   Private Sub DataGrid1_MouseUp(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs)
       Dim dg As DataGrid = CType(sender, DataGrid)
       Dim myCell As DataGridCell = dg.CurrentCell
       Dim tempkey As String = myCell.ToString
       Console.WriteLine("Temp " & tempkey)
       If myHashTable.Contains(tempkey) Then Exit Sub
       myHashTable.Add(tempkey, myCell.GetHashCode)
       Console.WriteLine("Hashcode: " & myCell.GetHashCode.ToString)
   End Sub

Vedi anche

• CurrentCell
• DataGrid