ConvertToInt64 Example Syntax C-Sharp ASP.NET | C# ConvertToInt64 | Source Code

Posted by on Tuesday, May 17, 2011 · Leave a Comment 

ConvertToInt64 Example Syntax C-Sharp ASP.NET | C# ConvertToInt64 | Source Code

Summary: – Illustrates using with in C-Sharp ASP.NET.


View Other C-Sharp ASP.NET Type Conversion Function Examples


Purpose:
Converts positive and negative numbers into Long data type

Syntax:
Convert.ToInt64(expression)

Parameters Description
expression -9,223,372,036,854,775,808 through 9,223,372,036,854,775,807; fractional parts are rounded.

Result Data Type Description
Long returns 64-bit (8-byte) whole number integers

Quick Example
Dim Long1 As Long = Convert.ToInt64(1.33)
TextBox1.Text = Long1.ToString() Returns 1

Step 1: Click on cs to Cut-n-paste code into ConvertToInt64.aspx.cs

using System;
using System.IO;
using System.Data;
 
//****************************************************************************************
// Purpose: Converts positive and negative numbers into Long data type
//
// Syntax: 	Convert.ToInt64(expression)
//
// Parameter1: expression - -9,223,372,036,854,775,808 through 9,223,372,036,854,775,807; fractional parts are rounded.
//
// Result: Long - returns 64-bit (8-byte) whole number integers 
//
// Quick Example: Dim Long1 As Long = Convert.ToInt64(1.33)
//        TextBox1.Text = Long1.ToString() // Returns 1
//
//****************************************************************************************
// This example is from http://idealprogrammer.com
 
 
partial class _ConvertToInt64 : System.Web.UI.Page
{
 
    protected void Page_Load(object sender, System.EventArgs e)
    {
 
        Label1.Text = "Example #1: 	Convert.ToInt64(1.33) ";
 
        long Long1 = Convert.ToInt64(1.33);
 
        TextBox1.Text = Long1.ToString(); // Returns 1
 
        Label2.Text = "Example #2: 	Convert.ToInt64(-3.4) ";
 
        long Long2 = Convert.ToInt64(-3.4);
 
        TextBox2.Text = Long2.ToString(); // Returns -3
 
        Label3.Text = "Example #3: 	Convert.ToInt64(5.5)";
 
        long Long3 = Convert.ToInt64(5.5);
 
        TextBox3.Text = Long3.ToString(); // Returns 6
 
 
    }
 
 
}

Step 2: Click on XML to Cut-n-paste code into ConvertToInt64.aspx

< %@ Page Language="VB" AutoEventWireup="false" CodeFile="ConvertToInt64.aspx.cs" Inherits="_ConvertToInt64" %>
 
< !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 />
          <h1><asp:label ID="Label3" runat="server" Text="Label"></asp:label> </h1>
         <asp:textbox ID="TextBox3" 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:

C-Sharp ASP.NET Syntax Functions ConversionFunctions ConvertToInt64
  1. Use Visual Web Developer 2010
  2. Create new web site;
    • Click File/New Web Site
    • Select ASP.NET Website Template
    • Select C-Sharp for Language
    • name of Web Site could be CSharp_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 Functions folder in solution explorer;
    • add new folder;
    • name of folder could be: TypeConversionFunctions
  6. Add Web Form Named ConvertToInt64 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 ConvertToInt64
  7. Click on cs in step 1 at the top of this page to copy code into code-behind ConvertToInt64.aspx.cs
  8. Click on XML in step 2 above to copy code into web form ConvertToInt64.aspx
  9. Right-click on ConvertToInt64.aspx in solution explorer and select view in browser

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