public override object EditValue(ITypeDescriptorContext context, IServiceProvider provider, object value)
{
object retvalue = value;
try
{
IDesignerHost host = (IDesignerHost)context.GetService(typeof(IDesignerHost));
IWindowsFormsEditorService srv = (IWindowsFormsEditorService)context.GetService(typeof(IWindowsFormsEditorService));
if (srv != null && host != null)
{
DataUIMapper dm = (DataUIMapper)context.Instance;
IDesigner designer = host.GetDesigner(dm);
MappingsEditorForm form = new MappingsEditorForm(designer);
//form.SetMappings(dm.Mappings);
form.Host = host;
form.DataUIMapper = dm;
//Show form.
if (srv.ShowDialog(form) == DialogResult.OK)
{
MapperInfoList mappings = form.GetMappings();
context.PropertyDescriptor.SetValue(context.Instance, mappings);
//if (form.ShowDialog() == System.Windows.Forms.DialogResult.OK)
//{
// MapperInfoList mappings = form.GetMappings();
// context.PropertyDescriptor.SetValue(context.Instance, mappings);
//}
}
}
}
catch (Exception ex)
{
System.Windows.Forms.MessageBox.Show(
"��������ʱ�쳣: " + ex.ToString());
}
return(retvalue);
}
void OnEditMappings(object sender, EventArgs e)
{
try
{
MappingsEditorForm form = new MappingsEditorForm(this);
form.SetMappings(CurrentMapper.Mappings);
if (form.ShowDialog() == System.Windows.Forms.DialogResult.OK)
{
MapperInfoList mappings = form.GetMappings();
PropertyDescriptor prop = TypeDescriptor.GetProperties(Component)["Mappings"];
prop.SetValue(Component, mappings);
}
}
catch (Exception ex)
{
System.Windows.Forms.MessageBox.Show(
"´íÎó: " + ex.ToString());
}
}