DataGridView.RowsRemoved イベント
アセンブリ: System.Windows.Forms (system.windows.forms.dll 内)

Dim instance As DataGridView Dim handler As DataGridViewRowsRemovedEventHandler AddHandler instance.RowsRemoved, handler
public: event DataGridViewRowsRemovedEventHandler^ RowsRemoved { void add (DataGridViewRowsRemovedEventHandler^ value); void remove (DataGridViewRowsRemovedEventHandler^ value); }


このイベントを使用して、DataGridView の残高列の値を更新するコード例を次に示します。
Private Sub CellValueChanged(ByVal sender As Object, _ ByVal e As DataGridViewCellEventArgs) _ Handles DataGridView1.CellValueChanged ' Update the balance column whenever the values of any cell changes. UpdateBalance() End Sub Private Sub RowsRemoved(ByVal sender As Object, _ ByVal e As DataGridViewRowsRemovedEventArgs) _ Handles DataGridView1.RowsRemoved ' Update the balance column whenever rows are deleted. UpdateBalance() End Sub Private Sub UpdateBalance() Dim counter As Integer Dim balance As Integer Dim deposit As Integer Dim withdrawal As Integer ' Iterate through the rows, skipping the Starting Balance Row. For counter = 1 To (DataGridView1.Rows.Count - 2) deposit = 0 withdrawal = 0 balance = Integer.Parse(DataGridView1.Rows(counter - 1) _ .Cells("Balance").Value.ToString()) If Not DataGridView1.Rows(counter) _ .Cells("Deposits").Value Is Nothing Then ' Verify that the cell value is not an empty string. If Not DataGridView1.Rows(counter) _ .Cells("Deposits").Value.ToString().Length = 0 Then deposit = Integer.Parse(DataGridView1.Rows(counter) _ .Cells("Deposits").Value.ToString()) End If End If If Not DataGridView1.Rows(counter) _ .Cells("Withdrawals").Value Is Nothing Then If Not DataGridView1.Rows(counter) _ .Cells("Withdrawals").Value.ToString().Length = 0 Then withdrawal = Integer.Parse(DataGridView1.Rows(counter) _ .Cells("Withdrawals").Value.ToString()) End If End If DataGridView1.Rows(counter).Cells("Balance").Value = _ (balance + deposit + withdrawal).ToString() Next End Sub
private void DataGridView1_CellValueChanged( object sender, DataGridViewCellEventArgs e) { // Update the balance column whenever the value of any cell changes. UpdateBalance(); } private void DataGridView1_RowsRemoved( object sender, DataGridViewRowsRemovedEventArgs e) { // Update the balance column whenever rows are deleted. UpdateBalance(); } private void UpdateBalance() { int counter; int balance; int deposit; int withdrawal; // Iterate through the rows, skipping the Starting Balance row. for (counter = 1; counter < (DataGridView1.Rows.Count - 1); counter++) { deposit = 0; withdrawal = 0; balance = int.Parse(DataGridView1.Rows[counter - 1] .Cells["Balance"].Value.ToString()); if (DataGridView1.Rows[counter].Cells["Deposits"].Value != null) { // Verify that the cell value is not an empty string. if (DataGridView1.Rows[counter] .Cells["Deposits"].Value.ToString().Length != 0) { deposit = int.Parse(DataGridView1.Rows[counter] .Cells["Deposits"].Value.ToString()); } } if (DataGridView1.Rows[counter].Cells["Withdrawals"].Value != null) { if (DataGridView1.Rows[counter] .Cells["Withdrawals"].Value.ToString().Length != 0) { withdrawal = int.Parse(DataGridView1.Rows[counter] .Cells["Withdrawals"].Value.ToString()); } } DataGridView1.Rows[counter].Cells["Balance"].Value = (balance + deposit + withdrawal).ToString(); } }

Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
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DataGridView クラス
DataGridView メンバ
System.Windows.Forms 名前空間
DataGridViewRowsRemovedEventHandler
DataGridViewRowsRemovedEventArgs
OnRowsRemoved
その他の技術情報
DataGridView コントロール (Windows フォーム)
- DataGridView.RowsRemoved イベントのページへのリンク