Vb Net Lab Programs For Bca Students Fix 'link' Here

Design a class Student with attributes RollNo and Name . Derive a class Exam from Student with marks for three subjects. Calculate and display the total marks.

The program crashes or concatenation occurs instead of mathematical addition (e.g., 5 + 5 results in 55 ).

Ensure your MS Access version matches the provider ( ACE.OLEDB.12.0 for .accdb , Jet.OLEDB.4.0 for .mdb ). vb net lab programs for bca students fix

: Design a parent form that can open and manage multiple child forms. 4. Advanced Application Logic

Ultimate VB.NET Lab Programs Guide for BCA Students: Code & Fixes Design a class Student with attributes RollNo and Name

InvalidCastException when text boxes are left blank. Traditional lab manuals often use num1 = Val(txtNum1.Text) . While Val() prevents crashes, it returns 0 for strings, leading to silent logical errors.

Dim maxVal As Integer = numbers(0) Dim minVal As Integer = numbers(0) Dim sum As Integer = 0 The program crashes or concatenation occurs instead of

: Attempting to name the constructor function the same as the class (like in Java/C++). In VB.NET, constructors must always be named Sub New .