public static IGridColumn FromNativeColumn(AccessibleColumnHeader nativeColumn)
{
var gridColumn = new GridColumn
{
Name = nativeColumn.Name,
Caption = nativeColumn.Text,
Visible = nativeColumn.Visible,
};
return(gridColumn);
}
public static AccessibleColumnHeader ToNativeColumn(IGridColumn gridColumn)
{
var ourGridColumn = (GridColumn)gridColumn;
var nativeColumn = new AccessibleColumnHeader
{
Name = ourGridColumn.Name,
Text = ourGridColumn.Caption,
Visible = ourGridColumn.Visible,
};
return(nativeColumn);
}
private void DataBind()
{
using (new BeforeAfter(BeginUpdate, EndUpdate))
{
this.Items.Clear();
if (_dataSource != null)
{
// TODO: We might be better off never creating the hidden columns' headers in the first place
var columns = _dataSource.Columns.Count;
var visibleColumns = Columns.Cast <AccessibleColumnHeader>().Where(c => c.Visible).ToList();
if (Columns.Count != visibleColumns.Count)
{
Columns.Clear();
foreach (var accessibleColumnHeader in visibleColumns)
{
Columns.Add(accessibleColumnHeader);
}
}
var lastColumn = (AccessibleColumnHeader)Columns[Columns.Count - 1];
if (lastColumn.Text != String.Empty)
{
// dummy column for the auto-sizing
var header = new AccessibleColumnHeader {
Text = String.Empty
};
Columns.Add(header);
visibleColumns.Add(header);
}
var dataRows = _dataSource.AsEnumerable();
var sourceColumn = MapToSourceColumn(_dataSource.Columns.Cast <DataColumn>(), _sortingColumn);
var potentiallySortedRows = dataRows;
if (_sortingColumn != -1)
{
if (_sortOrder == SortOrder.Ascending)
{
potentiallySortedRows = dataRows.OrderBy(r => r[sourceColumn], TheColumnComparer);
}
else
{
potentiallySortedRows = dataRows.OrderByDescending(r => r[sourceColumn], TheColumnComparer);
}
}
var row = 0;
foreach (var dataRow in potentiallySortedRows)
{
var strings = new List <string>(columns);
for (var c = 0; c < columns; c++)
{
if (_dataSource.Columns[c].IsVisible())
{
var value = dataRow.ItemArray[c];
strings.Add(value == null ? String.Empty : value.ToString());
}
}
var listViewItem = new ListViewItem(strings.ToArray())
{
BackColor = (row % 2 == 0) ? this.BackColor : AlternatingBackColor,
Tag = dataRow,
};
row++;
this.Items.Add(listViewItem);
}
}
}
}
