Delete() メソッド

行を削除します。

シンタックス

Visual Basic

'宣言
 
Public Overloads Function Delete() As Boolean

C#

public bool Delete()

解説

行が削除される際、BeforeRowsDeleted イベントが生成されます。その後、行はコントロールから削除されて、それに対応するレコードもデータソースから削除されます。レコードをデータソースから削除できない場合は、Error イベントが生成されます。

コントロールの DeleteSelectedRows メソッドを呼び出せば、選択されたすべての行を削除できます。

使用例

Visual Basic

Imports Infragistics.Shared
Imports Infragistics.Win
Imports Infragistics.Win.UltraWinGrid

  Private Sub Button69_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles button69.Click

      ' Get the row to delete. In this case we will use the active row.
      Dim row As UltraGridRow = Me.UltraGrid1.ActiveRow

      If Not row Is Nothing Then
          ' Delete the row by calling Delete method. Enclose the call in a try-catch
          ' block so if there is an error, we can catch it and show an error message box
          ' to the user.
          Try
              row.Delete()

              ' IsDeleted should be true after a row has been deleted.
              Debug.WriteLine("Row.IsDeleted = " & row.IsDeleted)
          Catch exc As Exception
              MessageBox.Show("Error occured during deleting the row.\n" & exc.Message, _
                              "Error deleting row", MessageBoxButtons.OK, MessageBoxIcon.Error)
          End Try
      Else
          ' If there is no active row, then prompt the user to select one.
          MessageBox.Show("Please select a single row to delete.")
      End If

  End Sub

C#

using Infragistics.Shared;
using Infragistics.Win;
using Infragistics.Win.UltraWinGrid;
using System.Diagnostics;

private void button69_Click(object sender, System.EventArgs e)
{

	// Get the row to delete. In this case we will use the active row.
	UltraGridRow row = this.ultraGrid1.ActiveRow;

	if ( null != row )
	{
		// Delete the row by calling Delete method. Enclose the call in a try-catch
		// block so if there is an error, we can catch it and show an error message box
		// to the user.
		try
		{
			row.Delete( );

			// IsDeleted should be true after a row has been deleted.
			Debug.WriteLine( "Row.IsDeleted = " + row.IsDeleted );
		}
		catch ( Exception exc )
		{
			MessageBox.Show( "Error occured during deleting the row.\n" + exc.Message, 
					"Error deleting row", MessageBoxButtons.OK, MessageBoxIcon.Error );
		}
	}
	else
	{
		// If there is no active row, then prompt the user to select one.
		MessageBox.Show( "Please select a single row to delete." );
	}

}