public static void BindSelectedItems(this ListView control, ListField <ListViewRow> field)
{
bool ignore = false;
control.SelectedIndexChanged += (sender, e) =>
{
ignore = true;
try
{
field.Set(control.SelectedItems.Cast <ListViewItem>().Select(x => x.Tag).Cast <ListViewRow>());
}
finally
{
ignore = false;
}
};
field.Changed += (sender, e) =>
{
// ignore is true when the ListField has changed as the result of the user selecting an item. Therefore,
// we don't want to redo that same change on the control.
if (ignore)
{
return;
}
control.BeginUpdate();
try
{
control.SelectedItems.Clear();
foreach (var row in field)
{
foreach (var item in control.Items.Cast <ListViewItem>())
{
if (item.Tag == row)
{
item.Selected = true;
break;
}
}
}
}
finally
{
control.EndUpdate();
}
};
}
public static void BindItems(this ComboBox control, ListField <string> field)
{
control.Items.AddRange(field.ToArray());
field.Changed += (sender, e) =>
{
int selectedIndex = control.SelectedIndex;
control.BeginUpdate();
try
{
control.Items.Clear();
control.Items.AddRange(field.ToArray());
if (control.Items.Count > 0)
{
control.SelectedIndex = Math.Max(0, Math.Min(control.Items.Count - 1, selectedIndex));
}
}
finally
{
control.EndUpdate();
}
};
}
private static void PopulateListView(ListView control, ListField <ListViewRow> field)
{
var groups =
field
.Select(x => x.GroupName)
.Where(x => x != null)
.Distinct()
.OrderBy(x => x)
.ToDictionary(
x => x,
x => new ListViewGroup(x, x));
var images =
field
.Select(x => x.Icon)
.Where(x => x != null)
.Distinct()
.Zip(Enumerable.Range(0, int.MaxValue), (image, index) => new { image, index })
.ToDictionary(x => x.image, x => x.index);
if (images.Any())
{
var imageList = new ImageList();
foreach (var pair in images)
{
imageList.Images.Add(pair.Key);
}
if (control.SmallImageList != null)
{
control.SmallImageList.Dispose();
}
control.SmallImageList = imageList;
}
var boldFont = new Font(control.Font, FontStyle.Bold);
control.BeginUpdate();
try
{
var selectedIndices = control.SelectedIndices.Cast <int>().ToList();
control.Groups.Clear();
control.Items.Clear();
control.Groups.AddRange(groups.Values.ToArray());
foreach (var row in field)
{
var lvi =
row.GroupName == null
? new ListViewItem()
: new ListViewItem(groups[row.GroupName]);
lvi.Tag = row;
lvi.Font = boldFont;
lvi.UseItemStyleForSubItems = false;
bool first = true;
foreach (string cell in row.Cells)
{
if (first)
{
lvi.Text = cell;
}
else
{
lvi.SubItems.Add(cell);
lvi.SubItems.Cast <ListViewItem.ListViewSubItem>().Last().Font = control.Font;
}
first = false;
}
if (row.Icon != null)
{
lvi.ImageIndex = images[row.Icon];
}
control.Items.Add(lvi);
}
control.SelectedIndices.Clear();
foreach (int index in selectedIndices.Where(x => x < control.Items.Count))
{
control.SelectedIndices.Add(index);
}
}
finally
{
control.EndUpdate();
}
}
public static void BindItems(this ListView control, ListField <ListViewRow> field)
{
PopulateListView(control, field);
field.Changed += (sender, e) => PopulateListView(control, field);
}
