Question

如果单元格中的DataGridView.CellValueChanged编辑控件更改了其选择，我如何强制引发DataGridViewCell.Value事件（并将更改的实际更改为ComboBox属性）？默认情况下，仅在具有ComboBox的单元格失去焦点后才会引发事件。

Answer 1

我解决了这个问题：

    myDataGridView.EditingControlShowing += new System.Windows.Forms.DataGridViewEditingControlShowingEventHandler(myDataGridView_EditingControlShowing);

    private void myDataGridView_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)
    {
        if (e.Control.GetType() == typeof(DataGridViewComboBoxEditingControl))
        {
            ComboBox cmb = (ComboBox)e.Control;
            cmb.SelectionChangeCommitted -= new EventHandler(cmb_SelectionChangeCommitted);
            cmb.SelectionChangeCommitted += new EventHandler(cmb_SelectionChangeCommitted);
        }
    }

    void cmb_SelectionChangeCommitted(object sender, EventArgs e)
    {
        dgvPresupuesto.CurrentCell.Value = ((DataGridViewComboBoxEditingControl)sender).EditingControlFormattedValue;
    }

Answer 2

我最终这样做了。我不知道这是否是“首选”的方式，或者它是否会在以后产生任何副作用，但现在似乎有效：

this.gridView.EditingControlShowing += this.GridViewOnEditingControlShowing;

private void GridViewOnEditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)
{
    ComboBox cellComboBox = e.Control as ComboBox;
    if (cellComboBox != null)
    {
        // make sure the handler doen't get registered twice
        cellComboBox.SelectionChangeCommitted -= this.CellComboBoxOnelectionChangeCommitted;
        cellComboBox.SelectionChangeCommitted += this.CellComboBoxOnelectionChangeCommitted;
    }
}

private void CellComboBoxOnelectionChangeCommitted(object sender, EventArgs e)
{ 
    DataGridViewComboBoxEditingControl comboBox = sender as DataGridViewComboBoxEditingControl;
    if (sender == null)
    {
        return;
    }     
    if (comboBox.SelectedValue == null)
    {
        return;
    }    
    if (this.gridView.CurrentCell.Value == comboBox.SelectedValue)
    {
        return;
    }    
    this.gridView.CurrentCell.Value = comboBox.SelectedValue;        
}

Answer 3

组合框的值的变化实际上是与网格关联的编辑控件。因此，要启动任何内容，您必须在DataGrid的EditingControlShowing事件中为该特定列添加这些

private void dg_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)
{
  if (dg.CurrentCell.ColumnIndex == 0)
  {
    ComboBox cmbox = e.Control as ComboBox;
    cmbox.SelectedValueChanged += new EventHandler(cmbox_SelectedValueChanged);
  }
}

您可以在Combobox的所选cvalue更改事件中调用单元格值更改事件

在ComboBox中更改选择时，在DataGridView中更改了提交

3 个答案: