DataGridView.CurrentCellDirtyStateChanged DataGridView.CurrentCellDirtyStateChanged DataGridView.CurrentCellDirtyStateChanged DataGridView.CurrentCellDirtyStateChanged Event

定义

单元格状态因其内容更改而更改时发生。Occurs when the state of a cell changes in relation to a change in its contents.

public:
 event EventHandler ^ CurrentCellDirtyStateChanged;
public event EventHandler CurrentCellDirtyStateChanged;
member this.CurrentCellDirtyStateChanged : EventHandler 
Public Custom Event CurrentCellDirtyStateChanged As EventHandler 

示例

下面的代码示例演示如何处理CurrentCellDirtyStateChanged事件。The following code example demonstrates how to handle the CurrentCellDirtyStateChanged event. 在此示例中,事件处理程序调用CommitEdit方法来CellValueChanged引发事件,并确定的当前值DataGridViewCheckBoxCellIn this example, the event handler calls the CommitEdit method to raise the CellValueChanged event and determine the current value of a DataGridViewCheckBoxCell. 此代码示例摘自了如何:禁用 Windows 窗体 DataGridView 控件的按钮列中的按钮。This code example is part of a larger example provided in How to: Disable Buttons in a Button Column in the Windows Forms DataGridView Control.

// This event handler manually raises the CellValueChanged event
// by calling the CommitEdit method.
void dataGridView1_CurrentCellDirtyStateChanged(object sender,
    EventArgs e)
{
    if (dataGridView1.IsCurrentCellDirty)
    {
        dataGridView1.CommitEdit(DataGridViewDataErrorContexts.Commit);
    }
}

// If a check box cell is clicked, this event handler disables  
// or enables the button in the same row as the clicked cell.
public void dataGridView1_CellValueChanged(object sender,
    DataGridViewCellEventArgs e)
{
    if (dataGridView1.Columns[e.ColumnIndex].Name == "CheckBoxes")
    {
        DataGridViewDisableButtonCell buttonCell =
            (DataGridViewDisableButtonCell)dataGridView1.
            Rows[e.RowIndex].Cells["Buttons"];

        DataGridViewCheckBoxCell checkCell =
            (DataGridViewCheckBoxCell)dataGridView1.
            Rows[e.RowIndex].Cells["CheckBoxes"];
        buttonCell.Enabled = !(Boolean)checkCell.Value;

        dataGridView1.Invalidate();
    }
}
' This event handler manually raises the CellValueChanged event
' by calling the CommitEdit method.
Sub dataGridView1_CurrentCellDirtyStateChanged( _
    ByVal sender As Object, ByVal e As EventArgs) _
    Handles dataGridView1.CurrentCellDirtyStateChanged

    If dataGridView1.IsCurrentCellDirty Then
        dataGridView1.CommitEdit(DataGridViewDataErrorContexts.Commit)
    End If
End Sub

' If a check box cell is clicked, this event handler disables  
' or enables the button in the same row as the clicked cell.
Public Sub dataGridView1_CellValueChanged(ByVal sender As Object, _
    ByVal e As DataGridViewCellEventArgs) _
    Handles dataGridView1.CellValueChanged

    If dataGridView1.Columns(e.ColumnIndex).Name = "CheckBoxes" Then
        Dim buttonCell As DataGridViewDisableButtonCell = _
            CType(dataGridView1.Rows(e.RowIndex).Cells("Buttons"), _
            DataGridViewDisableButtonCell)

        Dim checkCell As DataGridViewCheckBoxCell = _
            CType(dataGridView1.Rows(e.RowIndex).Cells("CheckBoxes"), _
            DataGridViewCheckBoxCell)
        buttonCell.Enabled = Not CType(checkCell.Value, [Boolean])

        dataGridView1.Invalidate()
    End If
End Sub

注解

如果单元格的内容已更改但尚未保存更改,则将其标记为已修改。A cell is marked as modified if its contents have changed but the change has not been saved.

此事件通常在以下情况下发生:已编辑单元格,但尚未将更改提交到数据缓存,或者当取消编辑操作时。This event typically occurs when a cell has been edited but the change has not been committed to the data cache, or when an edit operation is canceled.

有关如何处理事件的详细信息,请参阅处理和引发事件For more information about how to handle events, see Handling and Raising Events.

适用于

另请参阅