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 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();
}
}
}
