C-Sharp ConvertToUInt64 Example – Code Sample Syntax

C-Sharp ConvertToUInt64 Example – Code Sample Syntax

Purpose: – Illustrates using .

Purpose:
Converts numbers into ULong data type – ULong data type is a
64-bit (8-byte) unsigned integer that can hold values from 0 to
18,446,744,073,709,551,615 (unsigned). Rounds fractions to whole numbers

Syntax:
Convert.ToUInt64(expression)

Parameters Description
expression 0 to 0 through 18,446,744,073,709,551,615 (unsigned) – will throw
Exception() if negative number is passed in. Rounds fractions to whole numbers

Result Data Type Description
ULong 64-bit (8-byte) unsigned integer

Quick Example
Convert.ToUInt64(1.33) // Returns 1

Step 1: Click cs to Cut-n-paste code into clsConvertToUInt64.cs

using System;
 
public class clsConvertToUInt64
{
 
    public void Main()
    {
 
 
        //********************************************************************************
        // Purpose: Converts numbers into ULong data type - ULong data type is a
        // 64-bit (8-byte) unsigned integer that can hold values from 0 to
        // 18,446,744,073,709,551,615 (unsigned). Rounds fractions to whole numbers
        // 
        // Syntax: 	Convert.ToUInt64(expression)
        //
        // Parameter1: expression -   0 to 0 through 18,446,744,073,709,551,615 (unsigned) - will throw 
        // Exception() if negative number is passed in.  Rounds fractions to whole numbers
        //
        // Result: ULong - 64-bit (8-byte) unsigned integer
        //
        // Quick Example: Convert.ToUInt64(1.33) // Returns 1
        //
        //********************************************************************************
        // This example is from http://idealprogrammer.com
 
        Console.WriteLine("Example #1: 	Convert.ToUInt64(1.33)");
 
        ulong ULong1 = Convert.ToUInt64(1.33);
 
        Console.WriteLine(ULong1); // Returns 1
 
        //write blank line to make output easier to read
        Console.WriteLine();
 
        Console.WriteLine("Example #2: 	Convert.ToUInt64(3.4)");
 
        ulong ULong2 = Convert.ToUInt64(3.4);
 
        Console.WriteLine(ULong2); // Returns 3
        //write blank line to make output easier to read
        Console.WriteLine();
 
        Console.WriteLine("Example #3: 	Convert.ToUInt64(5.5)");
 
        ulong ULong3 = Convert.ToUInt64(5.5);
 
        Console.WriteLine(Convert.ToUInt64(ULong3)); // Returns 6
 
        //Prevent console from closing before you press enter
        Console.ReadLine();
 
    }
 
}

Step 2: Click cs to Cut-n-paste code into Module1.cs

Module Module1
 
    Sub Main()
 
 
        Dim myclsConvertToUInt64 As New clsConvertToUInt64
        myclsConvertToUInt64.Main()
 
 
 
    End Sub
 
End Module

Prerequistes:

  1. Install C-Sharp (Express or Standard Edition)
  2. Install SQL Server Express
  3. Download Northwind and pubs Database
  4. Attach Northwind Database to Databases in Sql Express
  5. Attach pubs Database to Databases in Sql Express

Notes:

  • Console Application is used to simplify things, but Windows Forms or Web Forms could also be used
  • You can build a library of syntax examples by using same project over and over and just commenting out what you do not want to execute in Module1.cs

Instructions:
C-Sharp Syntax Functions ConversionFunctions ConvertToUInt64

  1. Use C-Sharp 2010 Express or Standard Edition
  2. Create new project;
    • Click File/New Project
    • Select Console Application Template
    • Select C-Sharp for Language
    • name of project could be C-Sharp_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 Class Named clsConvertToUInt64 to TypeConversionFunctions folder
    • Right-click TypeConversionFunctions folder;
    • add new item;
    • Select class
    • Class name could be clsConvertToUInt64
  7. Click on cs in code in step 1 above to copy code into clsConvertToUInt64.cs
  8. Click on cs in code in step 2 above to copy code into Module1.cs
  9. Click green arrow or press F5 to run program