Using Methods with Object Oriented Database Development with VB.NET 2005 - Developing methods with parameters as objects

(Page 4 of 5 )

In the previous section, I explained two different methods with the same name, "add." Now, I shall further extend the same class with one more method (again with the same name) with a different type of parameter, just to extend its flexibility further. Let us go through the code now:

PublicSub add(ByVal objEmp As Emp)
        m_empno = objEmp.m_empno
        m_ename = objEmp.m_ename
        m_sal = objEmp.m_sal
        m_deptno = objEmp.m_deptno
        add()
    End Sub

The above method will be the third method with the name "add" (but with a difference in parameters), still strengthening the "method overloading" concept.  The above method accepts a different type of parameter. It is nothing but a parameter which accepts an object of the type "emp" class. 

To execute the above method, you need to create a separate object of type "emp," assign values to the fields and pass the same object as a parameter, while calling the method "add." The code is shown below:

PrivateSub btnAdd_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles btnAdd.Click
        Me.lblErrMsg.Text = ""
        Try
            Dim objParam As New Emp
            With objParam
                .m_deptno = Me.txtDeptno.Text
                .m_empno = Me.txtEmpno.Text
                .m_ename = Me.txtEname.Text
                .m_sal = Me.txtSal.Text
            End With
            Dim ep As New Emp
            ep.add(objParam)
        Catch ex As Exception
            Me.lblErrMsg.Text = ex.Message
        End Try
    End Sub

Next: Developing methods which return objects >>
 

More Visual Basic.NET Articles
More By Jagadish Chaterjee

Comments On: Using Methods with Object Oriented Database Development with VB.NET 2005

· Hello guys! this is my next contribution on database oriented OOPS with VB.NET 2005....   >>> Post your comment now!