public override object EditValue(ITypeDescriptorContext context, IServiceProvider provider, object value)
{
if (provider != null)
{
IWindowsFormsEditorService service = (IWindowsFormsEditorService) provider.GetService(typeof(IWindowsFormsEditorService));
if ((service == null) || (context.Instance == null))
{
return value;
}
IDesignerHost host = (IDesignerHost) provider.GetService(typeof(IDesignerHost));
if (host == null)
{
return value;
}
if (this.dataGridViewColumnCollectionDialog == null)
{
this.dataGridViewColumnCollectionDialog = new DataGridViewColumnCollectionDialog(((DataGridView) context.Instance).Site);
}
this.dataGridViewColumnCollectionDialog.SetLiveDataGridView((DataGridView) context.Instance);
using (DesignerTransaction transaction = host.CreateTransaction(System.Design.SR.GetString("DataGridViewColumnCollectionTransaction")))
{
if (service.ShowDialog(this.dataGridViewColumnCollectionDialog) == DialogResult.OK)
{
transaction.Commit();
return value;
}
transaction.Cancel();
}
}
return value;
}
public ListBoxItem(System.Windows.Forms.DataGridViewColumn column, DataGridViewColumnCollectionDialog owner, ComponentDesigner compDesigner)
{
this.column = column;
this.owner = owner;
this.compDesigner = compDesigner;
if (this.compDesigner != null)
{
this.compDesigner.Initialize(column);
TypeDescriptor.CreateAssociation(this.column, this.compDesigner);
}
ToolboxBitmapAttribute attribute = TypeDescriptor.GetAttributes(column)[DataGridViewColumnCollectionDialog.toolboxBitmapAttributeType] as ToolboxBitmapAttribute;
if (attribute != null)
{
this.toolboxBitmap = attribute.GetImage(column, false);
}
else
{
this.toolboxBitmap = this.owner.SelectedColumnsItemBitmap;
}
System.Windows.Forms.Design.DataGridViewColumnDesigner designer = compDesigner as System.Windows.Forms.Design.DataGridViewColumnDesigner;
if (designer != null)
{
designer.LiveDataGridView = this.owner.liveDataGridView;
}
}
public void OnEditColumns(object sender, EventArgs e)
{
IDesignerHost service = base.Component.Site.GetService(typeof(IDesignerHost)) as IDesignerHost;
DataGridViewColumnCollectionDialog dialog = new DataGridViewColumnCollectionDialog(((DataGridView) base.Component).Site);
dialog.SetLiveDataGridView((DataGridView) base.Component);
DesignerTransaction transaction = service.CreateTransaction(System.Design.SR.GetString("DataGridViewEditColumnsTransactionString"));
DialogResult cancel = DialogResult.Cancel;
try
{
cancel = this.ShowDialog(dialog);
}
finally
{
if (cancel == DialogResult.OK)
{
transaction.Commit();
}
else
{
transaction.Cancel();
}
}
}