private void btnChangeType_Click(object sender, EventArgs e) { cbxTypes.Items.Clear(); foreach (TagType type in TagType.EnumerateTypes()) { if (TagType.CanConvert(this.EditValue, type)) { cbxTypes.Items.Add(type.Name); } } btnChangeType.Enabled = false; cbxTypes.Enabled = true; cbxTypes.Text = this.EditTag.Type.Name; }