/// <summary>
/// Handles the Validated event of the txtUserId control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="System.EventArgs"/> instance containing the event data.</param>
private void txtUserId_Validated(object sender, EventArgs e)
{
if (string.IsNullOrEmpty(txtUserId.Text.Trim())) return;
using (var db = new UserBase())
_user = db.GetById(txtUserId.Text.Trim());
}
