如何:根据 Windows 窗体 DataGridView 控件的单元格中的更改执行自定义操作
更新:2007 年 11 月
DataGridView 控件具有多个可用于检测 DataGridView 单元格状态更改的事件。最常用的两个事件是 CellValueChanged 和 CellStateChanged 事件。
检测 DataGridView 单元格的值更改
编写 CellValueChanged 事件处理程序。
Private Sub dataGridView1_CellValueChanged(ByVal sender As Object, _ ByVal e As DataGridViewCellEventArgs) _ Handles dataGridView1.CellValueChanged Dim msg As String = String.Format( _ "Cell at row {0}, column {1} value changed", _ e.RowIndex, e.ColumnIndex) MessageBox.Show(msg, "Cell Value Changed") End Sub
private void dataGridView1_CellValueChanged(object sender, DataGridViewCellEventArgs e) { string msg = String.Format( "Cell at row {0}, column {1} value changed", e.RowIndex, e.ColumnIndex); MessageBox.Show(msg, "Cell Value Changed"); }
检测 DataGridView 单元格的状态更改
编写 CellStateChanged 事件处理程序。
Private Sub dataGridView1_CellStateChanged(ByVal sender As Object, _ ByVal e As DataGridViewCellStateChangedEventArgs) _ Handles dataGridView1.CellStateChanged Dim state As DataGridViewElementStates = e.StateChanged Dim msg As String = String.Format( _ "Row {0}, Column {1}, {2}", _ e.Cell.RowIndex, e.Cell.ColumnIndex, e.StateChanged) MessageBox.Show(msg, "Cell State Changed") End Sub
private void dataGridView1_CellStateChanged(object sender, DataGridViewCellStateChangedEventArgs e) { DataGridViewElementStates state = e.StateChanged; string msg = String.Format("Row {0}, Column {1}, {2}", e.Cell.RowIndex, e.Cell.ColumnIndex, e.StateChanged); MessageBox.Show(msg, "Cell State Changed"); }
编译代码
此示例需要:
名为 dataGridView1 的 DataGridView 控件。对于 C#,事件处理程序必须连接到相应的事件。
对 System 和 System.Windows.Forms 程序集的引用。
请参见
任务
演练:验证 Windows 窗体 DataGridView 控件中的数据