/// <summary>
/// Stores the current row ids to the viewstate
/// </summary>
public void StoreViewStateRowIdsandItemIndexes()
{
// store the current ids of every child rows...
OSDataGridTable child = Controls[0] as OSDataGridTable;
ArrayList rowIds = new ArrayList(child.Rows.Count);
ArrayList itemIndexes = new ArrayList(child.Rows.Count);
int i = 1;
foreach (OSDataGridItem item in child.Rows)
{
if (item.ID == null)
{
item.ID = OSDataGridItem.FormatId(i, EnableLegacyRendering);
}
rowIds.Add(OSDataGridItem.GetIntegerId(item.ID, EnableLegacyRendering));
itemIndexes.Add(item.ItemIndex);
i++;
}
ViewState["RowIds"] = rowIds;
ViewState["RowIdxs"] = itemIndexes;
}
/// <summary>
/// Inserts an item to the datagrid
/// </summary>
/// <param name="param name="dataItemIndex"></param>
/// <param name="dataItem"></param>
public void InsertItem(int dataItemIndex, object dataItem)
{
// check if the current page is full
IOSList rl = DataSource;
// update the datasource
rl.Insert(dataItem, dataItemIndex);
// set the record list position and databind the item
rl.SetPosition(dataItemIndex);
// create an item at the end of the list
OSDataGridItem item = (OSDataGridItem)CreateItem(dataItemIndex, dataItemIndex, ListItemType.Item);
DataGridItemEventArgs e = new DataGridItemEventArgs(item);
// initialize item
item.DataItem = dataItem;
InitializeItem(item, true);
this.OnItemCreated(e);
OSDataGridTable child = (OSDataGridTable)Controls[0];
// remove any empty message row...
if (((OSDataGridItem)child.Rows[child.Rows.Count - 1]).IsEmptyMessageItem)
{
child.Rows.RemoveAt(child.Rows.Count - 1);
}
// insert the item before the footer and pager items
int footerIndex = child.Rows.Count - 2;
int footerId;
if (child.Rows[footerIndex].ID != null)
{
footerId = OSDataGridItem.GetIntegerId(child.Rows[footerIndex].ID, EnableLegacyRendering);
}
else
{
footerId = footerIndex + 1;
}
child.Rows.AddAt(footerIndex, item);
// generate a new item id for this control
int id = footerId;
item.ID = OSDataGridItem.FormatId(id, EnableLegacyRendering);
// increase the footer and pager items, so that no repateated ids exist in the page
child.Rows[child.Rows.Count - 2].ID = OSDataGridItem.FormatId(id + 1, EnableLegacyRendering);
child.Rows[child.Rows.Count - 1].ID = OSDataGridItem.FormatId(id + 2, EnableLegacyRendering);
ViewState["_!ItemCount"] = rl.Length;
_isEmpty = false;
// increase higher item indexes in the data grid
foreach (OSDataGridItem otherItem in child.Rows)
{
if (otherItem.ItemIndex >= dataItemIndex && otherItem != item)
{
otherItem.SetItemIndex(otherItem.ItemIndex + 1);
}
}
// update row ids in the viewstate
StoreViewStateRowIdsandItemIndexes();
SelectedIndex = dataItemIndex;
item.DataBind();
this.OnItemDataBound(e);
item.DataItem = null;
}