DataGridView.CurrentCellDirtyStateChanged 事件

定义

命名空间:

System.Windows.Forms

程序集:

System.Windows.Forms.dll

单元格状态因其内容更改而更改时发生。

public:
 event EventHandler ^ CurrentCellDirtyStateChanged;

public event EventHandler CurrentCellDirtyStateChanged;

member this.CurrentCellDirtyStateChanged : EventHandler 

Public Custom Event CurrentCellDirtyStateChanged As EventHandler 

事件类型

EventHandler

示例

下面的代码示例演示如何处理 CurrentCellDirtyStateChanged 事件。 在此示例中，事件处理程序调用 CommitEdit 方法以引发 CellValueChanged 事件并确定 的 DataGridViewCheckBoxCell当前值。 此代码示例是如何：禁用 Windows 窗体 DataGridView 控件中按钮列中的按钮中提供的更大示例的一部分。

// 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，则会将其标记为已修改。

当单元格已编辑但更改尚未提交到数据缓存时，或者取消编辑操作时，通常会发生此事件。

有关如何处理事件的详细信息，请参阅 处理和引发事件。

另请参阅

• DataGridView 控件（Windows 窗体）