private void OnTableLoaded()
{
TableLoaded?.Invoke();
}
/// <summary>Populates the table with all the requested shell items.</summary>
/// <param name="columns">The columns to populate.</param>
/// <param name="cancellationToken">The cancellation token.</param>
public async Task PopulateTableAsync(IEnumerable <DataColumn> columns, CancellationToken cancellationToken)
{
var columnsToGet = columns.ToArray();
if (columnsToGet.Except(Columns.Cast <DataColumn>()).Any())
{
throw new ArgumentException("Columns specified that are not in table.", nameof(columnsToGet));
}
colsToGet = columnsToGet;
if (!(parent is null))
{
items = parent.IShellFolder.EnumObjects((SHCONTF)itemFilter);
}
if (items is null && !(parent is null))
{
items = parent.IShellFolder.EnumObjects((SHCONTF)itemFilter);
}
if (Rows.Count > 0)
{
Rows.Clear();
}
var f2 = parent?.IShellFolder as IShellFolder2;
if (!(items is null))
{
var slowFetchItems = new List <Task>();
var cInfo = columnsToGet.ToLookup(c => IsColumnSlow(c), c => ((PROPERTYKEY)c.ExtendedProperties[extPropKey], c));
var fastCols = cInfo[false].ToList();
var slowCols = cInfo[true].ToList();
foreach (var i in items)
{
if (cancellationToken.IsCancellationRequested)
{
break;
}
// Add row with fast properties
var row = NewRow();
row[colId] = i.GetBytes();
foreach (var(pk, col) in fastCols)
{
row[col] = GetProp(pk, i) ?? DBNull.Value;
}
Rows.Add(row);
// If there are slow props, spawn thread to get them
if (slowCols.Count > 0)
{
slowFetchItems.Add(GetSlowProps(i, row, slowCols, cancellationToken));
}
}
AllFastRowsAdded?.Invoke(this, EventArgs.Empty);
AcceptChanges();
await TaskAgg.WhenAll(slowFetchItems);
}
TableLoaded?.Invoke(this, EventArgs.Empty);
return;
object GetProp(in PROPERTYKEY pk, PIDL i)
{
object o = null;
try
{
if (f2 is null)
{
using var si = new ShellItem(i);
o = si.Properties[pk];
}
else
{
f2.GetDetailsEx(i, pk, out o).ThrowIfFailed();
}
}
catch { }
return(o switch
{
System.Runtime.InteropServices.ComTypes.FILETIME ft => ft.ToDateTime(),
_ => o
});
public void OnTableLoaded(TableContent e)
{
TableLoaded?.Invoke(this, e);
}