/// <summary>
/// 通过用户名查找用户的个性签名
/// </summary>
/// <param name="userName"></param>
/// <returns></returns>
public string GetSignature(string userName)
{
User_dal user_dal = new User_dal();
object objSignature = user_dal.GetSignature(userName);
if (objSignature == null || objSignature == System.DBNull.Value)
{
///
}
return(objSignature.ToString());
}
