ALTER PROCEDURE dbo.Login @AdminName nvarchar(50)=null, @AdminPassword nvarchar(50)=null, @LoginState int output AS if exists (SELECT * FROM [Admin] WHERE AdminName=@AdminName and AdminPassword=@AdminPassword and State='1')--这个State是用来表示该用户是否被禁用 set @LoginState=1 --登录成功 else set @LoginState=0 --登录失败

string connStr = ConfigurationManager.ConnectionStrings["conStr"].ConnectionString; SqlConnection con = new SqlConnection(connStr); con.Open(); SqlCommand thisCommand = new SqlCommand("Login", con); thisCommand.CommandType = CommandType.StoredProcedure; thisCommand.Parameters.Add("@AdminName", SqlDbType.NVarChar, 50).Value =AdminNameText.Text.Trim(); thisCommand.Parameters.Add("@AdminPassword", SqlDbType.Char, 200).Value = PasswordText.Text.Trim(); thisCommand.Parameters.Add("@LoginState", SqlDbType.Int); thisCommand.Parameters["@LoginState"].Direction = ParameterDirection.Output; thisCommand.ExecuteNonQuery(); Object objTempRole = thisCommand.Parameters["@LoginState"].Value; LoginLabel.Text = objTempRole.ToString();