DataGridCell.GetHashCode メソッドとは何？わかりやすく解説 Weblio辞書

.NET Framework クラスライブラリリファレンス

索引トップ用語の索引ランキング

DataGridCell.GetHashCode メソッド

Hashtable に追加できるハッシュ値を取得します。

名前空間: System.Windows.Forms
アセンブリ: System.Windows.Forms (system.windows.forms.dll 内)
構文

Visual Basic (宣言)

Public Overrides Function
 GetHashCode As Integer

Visual Basic (使用法)

Dim instance As DataGridCell
Dim returnValue As Integer

returnValue = instance.GetHashCode

public override int GetHashCode ()

C++

public:
virtual int GetHashCode () override

public int GetHashCode ()

JScript

public override function GetHashCode () : int

戻り値
Hashtable の DataGridCell を一意に識別する番号。

使用例

System.Windows.Forms.DataGrid コントロールで選択されたセルのハッシュ値を Hashtable に追加する例を次に示します。

Visual Basic

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

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());
}

C++

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.get_CurrentCell();
    String tempkey = myCell.ToString();
    Console.WriteLine("Temp " + tempkey);
    if (myHashTable.Contains(tempkey)) {
        return ;
    }
    myHashTable.Add((System.String)tempkey, 
        (System.Int32)myCell.GetHashCode());
    Console.WriteLine("Hashcode: "
        + System.Convert.ToString(myCell.GetHashCode()));
} //Grid_MouseUp