CByte Example Syntax VB.NET ASP.NET | CByte | Source Code

CByte Example Syntax VB.NET ASP.NET | CByte | Source Code

Summary: – Illustrates using with in VB.NET ASP.NET.



Purpose:
Converts 0 to 255 unsigned (rounded) into byte data type

Syntax:
CByte(numeric expression)

Parameters Description
numeric expression 0 to 255

Result Data Type Description
Byte 0 to 255 unsigned and parameter1 is rounded

Step 1: Click on Visual Basic to Cut-n-paste code into CByte.aspx.vb

Imports System
Imports System.IO
Imports System.Data
 
'****************************************************************************************
' Purpose: Converts 0 to 255 unsigned (rounded) into byte data type
'
' Syntax: 	CByte(numeric expression)
'
' Parameter1: numeric expression - 0 to 255
'
' Result: Byte - 0 to 255 unsigned and parameter1 is rounded
'
'****************************************************************************************
' This example is from http://idealprogrammer.com
' It shows how you can use CByte syntax in VB.NET ASP.NET
 
 
Partial Class _CByte
    Inherits System.Web.UI.Page
 
    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
 
        Label1.Text = "Example #1: 	CByte(numeric expression) "
 
        TextBox1.Text = CByte(255) ' Returns 255
 
        Label2.Text = "Example #2: 	CByte(numeric expression) "
 
        Dim intField As Integer = 1.5
        TextBox2.Text = CByte(intField) 'Returns 2
 
 
 
    End Sub
End Class

Step 2: Click on XML to Cut-n-paste code into CByte.aspx

< %@ Page Language="VB" AutoEventWireup="false" CodeFile="CByte.aspx.vb" Inherits="_CByte" %>
 
< !DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
 
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <h1><asp:label ID="Label1" runat="server" Text="Label"></asp:label> </h1>
         <asp:textbox ID="TextBox1" runat="server"></asp:textbox><br />
          <h1><asp:label ID="Label2" runat="server" Text="Label"></asp:label> </h1>
         <asp:textbox ID="TextBox2" runat="server"></asp:textbox><br />
 
 
 
 
    </div>
    </form>
</body>
</html>

Prerequistes:

  1. Install Visual Web Developer 2010
  2. Install SQL Server Express
  3. Download Northwind and Pubs Databases
  4. Attach Northwind Database to Databases in Sql Express
  5. Attach pubs Database to Databases in Sql Express

Notes:

  • You can build your own library of syntax examples by using same web site over and over and just add new web forms to it.

Instructions:

VB.NET ASP.NET Syntax Functions CByte
  1. Use Visual Web Developer 2010
  2. Create new web site;
    • Click File/New Web Site
    • Select ASP.NET Website Template
    • Select Visual Basic for Language
    • name of Web Site could be VBNET_ASPNET_Syntax.
  3. Add New folder named “Functions”
    • Right-click project name in solution explorer;
    • add new folder;
    • name of folder could be: Functions
  4. Add New subfolder named “ConversionFunctions”
    • Right-click Functions folder in solution explorer;
    • add new folder;
    • name of folder could be: ConversionFunctions
  5. Add New subfolder named “TypeConversionFunctions”
    • Right-click ConversionFunctions folder in solution explorer;
    • add new folder;
    • name of folder could be: TypeConversionFunctions
  6. Add Web Form Named CByte to TypeConversionFunctions folder
    • Right-click TypeConversionFunctions folder;
    • add new item;
    • Select Web Form
    • Check place code behind in separate file
    • Web Form name could be CByte
  7. Click on Visual Basic in step 1 at the top of this page to copy code into code-behind CByte.aspx.vb
  8. Click on XML in step 2 above to copy code into web form CByte.aspx
  9. Right-click on CByte.aspx in solution explorer and select view in browser