Xtragrid SelectionChanged或Alternative

Question

我在这里遇到问题。

我在winforms中有一个XtraGrid多选模式为true，我需要验证我选择的行是否匹配条件，选择它，如果没有，则取消选择它。我目前正在使用SelectionChanged这样的方法：

private void grdProducts_SelectionChanged(object sender, DevExpress.Data.SelectionChangedEventArgs e)
{
    try
    {
        GridView view = sender as GridView;
        int[] selectedRows = view.GetSelectedRows();
        for (int i = 0; i < selectedRows.Length; i++)
        {
            if (view.IsRowSelected(selectedRows[i]))
            {
                Product product = view.GetRow(selectedRows[i]) as Candidato;
                ProcessStatus processStatus = _procesoStatusService.GetProduct(product.IdProduct);
                if (processStatus.Proccess.Inventory == (int)ProductInventory.Yes)
                {
                    view.UnselectRow(selectedRows[i]);
                    XtraMessageBox.Show("One or more products are currently in inventory.");
                }
            }
        }
    }
    catch (Exception)
    {
        throw;
    }
}

此处的问题是当代码到达view.UnselectRow(selectedRows[i]);行时，再次调用SelectionChanged方法并且程序发送多个XtraMessageBox。

任何帮助？

Answer 1

您必须在代码之前使用BaseView.BeginSelection方法，并在代码之后使用BaseView.EndSelection方法。这样可以防止ColumnView.SelectionChanged事件发生 这是一个例子：

private void grdProducts_SelectionChanged(object sender, DevExpress.Data.SelectionChangedEventArgs e)
{
    var view = sender as GridView;
    if (view == null) return;
    view.BeginSelection();
    try
    {
        int[] selectedRows = view.GetSelectedRows();
        for (int i = 0; i < selectedRows.Length; i++)
        {
            if (view.IsRowSelected(selectedRows[i]))
            {
                Product product = view.GetRow(selectedRows[i]) as Candidato;
                ProcessStatus processStatus = _procesoStatusService.GetProduct(product.IdProduct);
                if (processStatus.Proccess.Inventory == (int)ProductInventory.Yes)
                {
                    view.UnselectRow(selectedRows[i]);
                    XtraMessageBox.Show("One or more products are currently in inventory.");
                }
            }
        }
    }
    catch (Exception)
    {
        view.EndSelection();
        throw;
    }
    view.EndSelection();        
}