Conversion from type 'DBNull' to type 'String' is not valid. Computer based training Videos - VB.Net - Memory Management
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VB.Net
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Introduction

  1. Introduction
    (1)
  2. Object Oriented Thinking
    (1)
  3. Hello World Program
    (1)

Language Features

  1. Memory Management
    (1)
  2. ALU
    (1)
  3. Console Output
    (1)
  4. Console Input
    (1)
  5. Control Statements
    (1)
  6. Looping Statements
    (1)
  7. Functions And Subroutines
    (1)
  8. Arrays
    (1)

Practice Programs

  1. Sum Of Even Integers
    (1)
  2. Product Of Odd Integers
    (1)
  3. Factorial Table
    (1)
  4. Histogram
    (1)
  5. Smallest Of Several Integers
    (1)
  6. Text Analysis
    (1)
  7. Vowel And Consonant Counting
    (1)
  8. Heat Analysis
    (1)
  9. Color Analysis
    (1)
  10. Ice Water Steam
    (1)
  11. Str Rev
    (1)
  12. Number Pyramid
    (1)

Random Numbers

  1. Random Numbers
    (2)

File Operations

  1. Create A File
    (2)
  2. Process Text File
    (2)
  3. File - Machine Readings
    (1)

Introduction to Class

  1. Class - Introduction
    (2)
  2. Class - Read Only Property - Private And Shared Members
    (2)
  3. Class - Constructors And Finalize
    (1)

Variable Scope & Debugging

  1. Variable Scope And Life Time
    (2)
  2. Debugging
    (2)

Windows Forms

  1. Creating First Windows Application
    (3)
  2. Analysing the Concepts Involved In First Windows Application
    (2)
  3. Circle Form
    (1)
  4. Circle With Business Object
    (1)
  5. Employee Form
    (2)
  6. Employee Form With Save Load Provision
    (2)
  7. Simple Document Interface
    (1)
  8. Multiple Document Interface
    (2)
  9. Menu Strip Status Bar Tool Bar
    (2)
  10. Form Properties
    (1)
  11. Form Properties - Layout Properties
    (1)
  12. Form Properties - Window Style - Properties
    (2)
  13. Form Events
    (1)
  14. Form Methods
    (2)
  15. Form Mouse Events
    (1)

Windows Controls-1

  1. Controls - Anchor And Docking
    (2)
  2. Controls - Key Press Events
    (1)
  3. Controls - Focus And Validation Events
    (2)
  4. Text Box
    (2)
  5. Numeric Up Down Control
    (1)
  6. Date Time Picker
    (2)
  7. Label
    (1)
  8. Link Label
    (1)
  9. Button
    (1)
  10. Group Box And Radio Button
    (1)
  11. Check Box
    (1)

Windows Controls-2

  1. List View Image List
    (2)
  2. Creating Land Measurement Class
    (2)
  3. Land Measurement Forms
    (2)
  4. Land Measurement Load And List View
    (2)

Windows Controls-3

  1. Combo Box And List Box
    (3)
  2. Panel
    (1)
  3. Progress Bar
    (1)
  4. Dialog Boxes
    (2)
  5. Rich Text Box
    (2)
  6. Tab Control
    (1)
  7. Timer
    (1)
  8. Picture Box
    (1)

Database, ADO Object-I

  1. Introduction To Database
    (2)
  2. Trading Project
    (2)
  3. Structure Query Language
    (3)
  4. ADO- Basics
    (1)
  5. ADO - Interface
    (1)
  6. ADO - Data Table Concept
    (2)

Building Project (Part-I)

  1. Starting Trading Solution
    (1)
  2. Application Settings
    (2)
  3. Get Data Table
    (2)
  4. List Viewfrom Data Table
    (1)
  5. Data Grid View
    (1)
  6. Data Grid View - Customizing
    (1)
  7. Data Grid View - Events And Methods
    (3)
  8. Combo Box With Data Table
    (2)
  9. Concept Of CRUD
    (1)
  10. Supplier BO
    (2)
  11. Testing Create Function
    (1)
  12. Supplier-Read
    (1)
  13. Supplier-Listing
    (1)
  14. Supplier-Update And Delete
    (1)
  15. Supplier Master - Navigation
    (1)
  16. Supplier Master - Find
    (1)
  17. Supplier Master - Modify
    (1)
  18. Supplier Master - Save
    (1)
  19. Assignment 1
    (1)

ADO Object-II

  1. Looping Through ADO Objects
    (1)

User Controls

  1. User Control
    (1)
  2. UserControl - Find
    (3)
  3. User Control - New Modify Save Cancel Actions
    (4)

Building Project (Part-II)

  1. SalesEntry - Building BO And DAL
    (1)
  2. Sales Entry - Creating Front End
    (3)
  3. New Modify
    (2)
  4. Sales Entry - Add Detail View
    (1)
  5. Sales Entry - Detail View - Combo Box Binding
    (1)
  6. Sales Entry - Save Detail Table Using Update Table
    (1)

Crystal Reports

  1. Crystal Reports
    (1)
  2. Cystal Reports - Customer List Design
    (1)
  3. Crystal Reports - Customer List Preview
    (1)
  4. Sales Bill - Header Part
    (2)
  5. Sales Bill - Detail And Footer
    (2)
Language Features » Memory Management
0:17:36
Description
  • Constant Types. Boolean, Numeric, Date, String, Character.
  • Variable Types.
  • Declaring Variables.
  • Declaring and initializing variables.
  • Variables are Objects in Visual Basic.
  • Introduction to Object Oriented Programming.
  • Storing and retrieving the values from Memory.
  • Short form Assignment Statements.
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