protected virtual void OnItemsRemoving(ItemsRemovingEventArgs e)
{
if (this.ItemsRemoving != null)
{
this.ItemsRemoving(this, e);
}
}
/// <summary>
/// Remove all of the given objects from the control
/// </summary>
/// <param name="modelObjects">Collection of objects to be removed</param>
/// <remarks>
/// <para>Nulls and model objects that are not in the ListView are silently ignored.</para>
/// <para>Due to problems in the underlying ListView, if you remove all the objects from
/// the control using this method and the list scroll vertically when you do so,
/// then when you subsequenially add more objects to the control,
/// the vertical scroll bar will become confused and the control will draw one or more
/// blank lines at the top of the list. </para>
/// </remarks>
public override void RemoveObjects(ICollection <object> modelObjects)
{
if (VirtualListDataSource == null)
{
return;
}
// Give the world a chance to cancel or change the removed objects
ItemsRemovingEventArgs args = new ItemsRemovingEventArgs(modelObjects);
OnItemsRemoving(args);
if (args.Canceled)
{
return;
}
try
{
BeginUpdate();
VirtualListDataSource.RemoveObjects(args.ObjectsToRemove);
BuildList();
}
finally
{
EndUpdate();
}
}
public override void RemoveObjects(ICollection modelObjects)
{
if (this.DataSource != null)
{
ItemsRemovingEventArgs e = new ItemsRemovingEventArgs(modelObjects);
this.OnItemsRemoving(e);
if (!e.Canceled)
{
this.ClearCachedInfo();
this.DataSource.RemoveObjects(e.ObjectsToRemove);
this.UpdateVirtualListSize();
}
}
}
/// <summary>
/// Remove all of the given objects from the control
/// </summary>
/// <param name="modelObjects">Collection of objects to be removed</param>
/// <remarks>
/// <para>Nulls and model objects that are not in the ListView are silently ignored.</para>
/// <para>Due to problems in the underlying ListView, if you remove all the objects from
/// the control using this method and the list scroll vertically when you do so,
/// then when you subsequenially add more objects to the control,
/// the vertical scroll bar will become confused and the control will draw one or more
/// blank lines at the top of the list. </para>
/// </remarks>
override public void RemoveObjects(ICollection modelObjects)
{
if (this.DataSource == null)
{
return;
}
// Give the world a chance to cancel or change the removed objects
ItemsRemovingEventArgs args = new ItemsRemovingEventArgs(modelObjects);
this.OnItemsRemoving(args);
if (args.Canceled)
{
return;
}
this.DataSource.RemoveObjects(args.ObjectsToRemove);
this.UpdateVirtualListSize();
}
/// <summary>
/// Remove all of the given objects from the control
/// </summary>
/// <param name="modelObjects">Collection of objects to be removed</param>
/// <remarks>
/// <para>Nulls and model objects that are not in the ListView are silently ignored.</para>
/// <para>Due to problems in the underlying ListView, if you remove all the objects from
/// the control using this method and the list scroll vertically when you do so,
/// then when you subsequenially add more objects to the control,
/// the vertical scroll bar will become confused and the control will draw one or more
/// blank lines at the top of the list. </para>
/// </remarks>
public override void RemoveObjects(ICollection modelObjects)
{
if (VirtualListDataSource == null)
{
return;
}
// Give the world a chance to cancel or change the removed objects
var args = new ItemsRemovingEventArgs(modelObjects);
OnItemsRemoving(args);
if (args.Canceled)
{
return;
}
ClearCachedInfo();
VirtualListDataSource.RemoveObjects(args.ObjectsToRemove);
UpdateVirtualListSize();
}
/// <summary>
/// Remove all of the given objects from the control.
/// </summary>
/// <param name="modelObjects">Collection of objects to be removed</param>
/// <remarks>
/// <para>Nulls and model objects that are not in the ListView are silently ignored.</para>
/// <para>This method is thread-safe.</para>
/// </remarks>
public virtual void RemoveObjects(ICollection modelObjects)
{
if (this.InvokeRequired) {
this.Invoke((MethodInvoker)delegate() { this.RemoveObjects(modelObjects); });
return;
}
if (modelObjects == null)
return;
this.BeginUpdate();
try {
// Give the world a chance to cancel or change the added objects
ItemsRemovingEventArgs args = new ItemsRemovingEventArgs(modelObjects);
this.OnItemsRemoving(args);
if (args.Canceled)
return;
modelObjects = args.ObjectsToRemove;
this.TakeOwnershipOfObjects();
ArrayList ourObjects = (ArrayList)this.Objects;
foreach (object modelObject in modelObjects) {
if (modelObject != null) {
ourObjects.Remove(modelObject);
int i = this.IndexOf(modelObject);
if (i >= 0)
this.Items.RemoveAt(i);
}
}
this.PostProcessRows();
// Tell the world that the list has changed
this.OnItemsChanged(new ItemsChangedEventArgs());
} finally {
this.EndUpdate();
}
}
/// <summary>
///
/// </summary>
/// <param name="e"></param>
protected virtual void OnItemsRemoving(ItemsRemovingEventArgs e) {
if (this.ItemsRemoving != null)
this.ItemsRemoving(this, e);
}
/// <summary>
/// Remove all of the given objects from the control
/// </summary>
/// <param name="modelObjects">Collection of objects to be removed</param>
/// <remarks>
/// <para>Nulls and model objects that are not in the ListView are silently ignored.</para>
/// <para>Due to problems in the underlying ListView, if you remove all the objects from
/// the control using this method and the list scroll vertically when you do so,
/// then when you subsequenially add more objects to the control,
/// the vertical scroll bar will become confused and the control will draw one or more
/// blank lines at the top of the list. </para>
/// </remarks>
public override void RemoveObjects(ICollection modelObjects) {
if (this.VirtualListDataSource == null)
return;
// Give the world a chance to cancel or change the removed objects
ItemsRemovingEventArgs args = new ItemsRemovingEventArgs(modelObjects);
this.OnItemsRemoving(args);
if (args.Canceled)
return;
try {
this.BeginUpdate();
this.VirtualListDataSource.RemoveObjects(args.ObjectsToRemove);
this.BuildList();
this.UnsubscribeNotifications(args.ObjectsToRemove);
}
finally {
this.EndUpdate();
}
}
/// <summary>
/// Remove all of the given objects from the control.
/// </summary>
/// <param name="modelObjects">Collection of objects to be removed</param>
/// <remarks>
/// <para>Nulls and model objects that are not in the ListView are silently ignored.</para>
/// <para>This method is thread-safe.</para>
/// </remarks>
public virtual void RemoveObjects(ICollection modelObjects) {
if (this.InvokeRequired) {
this.Invoke((MethodInvoker)delegate() { this.RemoveObjects(modelObjects); });
return;
}
if (modelObjects == null)
return;
this.BeginUpdate();
try {
// Give the world a chance to cancel or change the added objects
ItemsRemovingEventArgs args = new ItemsRemovingEventArgs(modelObjects);
this.OnItemsRemoving(args);
if (args.Canceled)
return;
modelObjects = args.ObjectsToRemove;
this.TakeOwnershipOfObjects();
ArrayList ourObjects = ObjectListView.EnumerableToArray(this.Objects, false);
foreach (object modelObject in modelObjects) {
if (modelObject != null) {
// ReSharper disable PossibleMultipleEnumeration
ourObjects.Remove(modelObject);
// ReSharper restore PossibleMultipleEnumeration
int i = this.IndexOf(modelObject);
if (i >= 0)
this.Items.RemoveAt(i);
}
}
this.PostProcessRows();
// Tell the world that the list has changed
this.UnsubscribeNotifications(modelObjects);
this.OnItemsChanged(new ItemsChangedEventArgs());
} finally {
this.EndUpdate();
}
}
/// <summary>
/// Remove all of the given objects from the control
/// </summary>
/// <param name="modelObjects">Collection of objects to be removed</param>
/// <remarks>
/// <para>Nulls and model objects that are not in the ListView are silently ignored.</para>
/// <para>Due to problems in the underlying ListView, if you remove all the objects from
/// the control using this method and the list scroll vertically when you do so,
/// then when you subsequenially add more objects to the control,
/// the vertical scroll bar will become confused and the control will draw one or more
/// blank lines at the top of the list. </para>
/// </remarks>
public override void RemoveObjects(ICollection modelObjects) {
if (this.VirtualListDataSource == null)
return;
// Give the world a chance to cancel or change the removed objects
ItemsRemovingEventArgs args = new ItemsRemovingEventArgs(modelObjects);
this.OnItemsRemoving(args);
if (args.Canceled)
return;
this.ClearCachedInfo();
this.VirtualListDataSource.RemoveObjects(args.ObjectsToRemove);
this.UpdateVirtualListSize();
}
