/// <summary>
/// Inserts item to <see cref="DataGrid" />.
/// </summary>
/// <param name="owner">The owner.</param>
/// <param name="index">The index.</param>
/// <returns>
/// Returns <c>true</c> if insertion is successful, <c>false</c> otherwise.
/// </returns>
public override bool InsertItem(DataGrid owner, int index)
{
var list = owner.ItemsSource;
if (list == null)
{
return false;
}
var itemType = TypeHelper.GetItemType(list);
var newList = owner.CreateInstance(itemType) as IList;
var innerType = TypeHelper.GetInnerTypeOfList(list);
if (innerType == null)
{
return false;
}
if (owner.ItemsInRows)
{
if (newList != null)
{
for (var ii = 0; ii < owner.Columns; ii++)
{
newList.Add(owner.CreateInstance(innerType));
}
if (index < 0)
{
list.Add(newList);
}
else
{
list.Insert(index, newList);
}
}
}
else
{
// insert/append one new element to each list.
foreach (var row in list.OfType<IList>())
{
var newItem = owner.CreateInstance(innerType);
if (index < 0)
{
row.Add(newItem);
}
else
{
row.Insert(index, newItem);
}
}
}
return true;
}
/// <summary>
/// Inserts item to <see cref="DataGrid" />.
/// </summary>
/// <param name="owner">The owner.</param>
/// <param name="index">The index.</param>
/// <returns>
/// <c>true</c> if insertion is successful, <c>false</c> otherwise.
/// </returns>
public override bool InsertItem(DataGrid owner, int index)
{
var list = owner.ItemsSource;
if (list == null)
{
return false;
}
var itemType = TypeHelper.GetItemType(list);
object newItem = null;
if (itemType == typeof(string))
{
newItem = string.Empty;
}
if (itemType == typeof(double))
{
newItem = 0.0;
}
if (itemType == typeof(int))
{
newItem = 0;
}
try
{
if (newItem == null)
{
newItem = owner.CreateInstance(itemType);
}
}
catch
{
return false;
}
if (index < 0)
{
list.Add(newItem);
}
else
{
list.Insert(index, newItem);
}
return true;
}