RadDropDownListEditorElement Items visible

[Вадим]

private void radGridView5_CellEditorInitialized(object sender, GridViewCellEventArgs e)
        {
            if (e.Column.Name == "operati")
            {
                RadDropDownListEditor editors = (RadDropDownListEditor)e.ActiveEditor;
                RadDropDownListEditorElement elements = (RadDropDownListEditorElement)editors.EditorElement;

                switch (_endOperationSoc)
                {
                    case "принят":
                        elements.Items.RemoveAt(4);
                        elements.Items.RemoveAt(1);
                        break;
                    case "приостановлен":
                        elements.Items.RemoveAt(3);
                        elements.Items.RemoveAt(1);
                        break;
                    case "снят":
                        elements.Items.RemoveAt(4);
                        elements.Items.RemoveAt(3);
                        elements.Items.RemoveAt(2);
                        break;
                    case "возобновлен":
                        elements.Items.RemoveAt(4);
                        elements.Items.RemoveAt(1);
                        break;
                }
            }

            if (e.Column.HeaderText == "соц. работник")
            {
                RadDropDownListEditor editors = (RadDropDownListEditor)e.ActiveEditor;
                RadDropDownListEditorElement elements = (RadDropDownListEditorElement)editors.EditorElement;
                if (radGridView5.RowCount != 0)
                    elements.SelectedIndex = elements.FindString(radGridView5.Rows[radGridView5.RowCount - 1].Cells[1].Value.ToString());
            }

            RadDropDownListEditor editor = e.ActiveEditor as RadDropDownListEditor;

            if (editor == null)
            {
                return;
            }

            RadDropDownListElement element = editor.EditorElement as RadDropDownListEditorElement;

            int scrolBarWidth = 0;

            if (element.DefaultItemsCountInDropDown < element.Items.Count)
            {
                scrolBarWidth = 35;
            }

            foreach (RadListDataItem item in element.Items)
            {
                string text = item.Text;
                Size size = TextRenderer.MeasureText(text, element.Font);

                if (element.DropDownWidth < size.Width)
                {
                    element.DropDownWidth = size.Width + scrolBarWidth;
                }
            }
        }

here is this moment:

switch (_endOperationSoc)
                {
                    case "принят":
                        //elements.Items[4].IsVisible = false;
                        elements.Items.RemoveAt(4);
                        elements.Items.RemoveAt(1);
                        RadMessageBox.Show("принят", "Ошибка", MessageBoxButtons.OK, RadMessageIcon.Exclamation);
                        break;
                    case "приостановлен":
                        elements.Items.RemoveAt(3);
                        elements.Items.RemoveAt(1);
                        RadMessageBox.Show("приостановлен", "Ошибка", MessageBoxButtons.OK, RadMessageIcon.Exclamation);
                        break;
                    case "снят":
                        elements.Items.RemoveAt(4);
                        elements.Items.RemoveAt(3);
                        elements.Items.RemoveAt(2);
                        RadMessageBox.Show("снят", "Ошибка", MessageBoxButtons.OK, RadMessageIcon.Exclamation);
                        break;
                    case "возобновлен":
                        elements.Items.RemoveAt(4);
                        elements.Items.RemoveAt(1);
                        RadMessageBox.Show("возобновлен", "Ошибка", MessageBoxButtons.OK, RadMessageIcon.Exclamation);
                        break;
                }
            }

How do I not delete items but just hide or display them?
It is necessary to do it in this moment.
Thank you.

 

[Dimitar]

Hello Vadim,

The only other way is to set the Height of the items:

RadDropDownListEditor editor = (RadDropDownListEditor)e.ActiveEditor;
if (editor != null)
{
    RadDropDownListEditorElement element = (RadDropDownListEditorElement)editor.EditorElement;
    element.Items[0].Height = 0;
}

I hope this will be useful. 

Regards,
Dimitar
Progress Telerik