Space Example Output Screenshot

using System;
public class clsSpace
{
 
    public void Main()
    {
 
        //****************************************************************************************
        // Purpose: Returns a string that contains the specified number of spaces
        //
        // Syntax: 	new String(' ', number)
        //
        // Parameter1: number - Required - Integer representing number of spaces to return
        //
        // Result: string -  Returns a string that contains the specified number of spaces
        //
        // Quick Example:     string strField = "This";
        // Console.WriteLine("[" + strField.TrimStart(' ') + new String(' ', 5) + "]"); //Returns [This     ] with leading spaces removed
        //
        //****************************************************************************************
 
        //****************************************************************************************
        // Example #1: Space(number) - Returns a string that contains the specified number of spaces
        //****************************************************************************************
 
        Console.WriteLine("Example #1: Space(number) ");
 
        string strField = "This";
 
        Console.WriteLine("[" + strField.TrimStart(' ') + new String(' ', 5) + "]"); //Returns [This ] with leading spaces removed
 
        //write blank line to make output easier to read
        Console.WriteLine();
 
 
 
        //Prevent console from closing before you press enter
        Console.ReadLine();
 
    }
 
 
}
 
 

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
 
namespace CSharp_Syntax
{
    class Program
    {
        static void Main(string[] args)
        {
 
            clsSpace mySpace = new clsSpace();
            mySpace.Main();
 
        }
    }
}
 
 
 
 
 
 

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 Program.cs

Instructions:

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 CSharp_Syntax.
3. Add New folder named "StringManipulation"
   • Right-click project name in solution explorer;
   • add new folder;
   • name of folder could be: StringManipulation
4. Add Class Named clsSpace to StringManipulation folder
   • Right-click StringManipulation folder;
   • add new item;
   • Select class
   • Class name could be clsSpace
5. Click on C# in code in step 1 above to copy code into clsSpace.cs
6. Click on C# in code in step 2 above to copy code into Program.cs
7. Click green arrow or press F5 to run program

Replace Example Output Screenshot

using System;
public class clsReplace
{
 
    public void Main()
    {
 
        //****************************************************************************************
        // Purpose:  Returns a string with all occurrences of the old string in the string
        // replaced by the new string.
        //
        // Syntax: 	strField.Replace(strOldField, strNewField)
        //
        // Parameter1: strField - Required - string - that you use as the source
        // for having all occurrences of oldstring replaced with newstring
        //
        // Parameter2: strOldField - Required - string that you want to search
        // for so you can replace all occurrences of it.
        //
        // Parameter3: strNewField - Required - string that you want to replace
        // the oldstring with.
        //
        // Result: string -  Returns a string with all occurrences of the old string in the string
        // replaced by the new string.
        //
        // Quick Example:      string strField = "This is my string";
        // string strOldField = "my";
        // string strNewField = "your";
        // Console.WriteLine(strField.Replace(strOldField, strNewField)); //Returns This is your string
        //
        //****************************************************************************************
 
        //****************************************************************************************
        // Example #1: Replace(string, oldstring, newstring)
        // Returns a string with all occurrences of the old string in the string
        // replaced by the new string.
        //****************************************************************************************
 
        Console.WriteLine("Example #1: Replace(strField, strOldField, strNewField)");
 
        string strField = "This is my string";
        string strOldField = "my";
        string strNewField = "your";
 
        Console.WriteLine(strField.Replace(strOldField, strNewField)); //Returns This is your string
 
        //write blank line to make output easier to read
        Console.WriteLine();
 
 
 
        //Prevent console from closing before you press enter
        Console.ReadLine();
 
    }
 
 
}
 
 

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
 
namespace CSharp_Syntax
{
    class Program
    {
        static void Main(string[] args)
        {
 
            clsReplace myReplace = new clsReplace();
            myReplace.Main();
 
        }
    }
}
 
 
 
 
 
 

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 Program.cs

Instructions:

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 CSharp_Syntax.
3. Add New folder named "StringManipulation"
   • Right-click project name in solution explorer;
   • add new folder;
   • name of folder could be: StringManipulation
4. Add Class Named clsReplace to StringManipulation folder
   • Right-click StringManipulation folder;
   • add new item;
   • Select class
   • Class name could be clsReplace
5. Click on C# in code in step 1 above to copy code into clsReplace.cs
6. Click on C# in code in step 2 above to copy code into Program.cs
7. Click green arrow or press F5 to run program

ArrayReverse Example Output Screenshot

Step 1: Click Visual Basic to Cut-n-paste code into clsArrayReverse.vb

Public Class clsArrayReverse
    Public Sub Main()
 
 
        '****************************************************************************************
        '
        ' Purpose: Reverses the order of elements in an array
        '
        ' Syntax: 	arrayname.Reverse
        '
        ' Result: array - contains a set of elements in the array in reverse order
        '
        ' Quick Example: Dim aryAuthors(2) As String
        ' aryAuthors(0) = "Plato"
        ' aryAuthors(1) = "Aristotle"
        ' aryAuthors(2) = "Hume"
        ' Array.Reverse(aryAuthors)
        '
        '****************************************************************************************
        ' This example is from http://idealprogrammer.com
 
        '****************************************************************************************
        Console.WriteLine("Example #1: Dim aryAuthors(2) As String")
        '****************************************************************************************
 
        Dim aryAuthors(2) As String
        ' we start with elements in alphabetical order and then reverse
        aryAuthors(0) = "Aristotle"
        aryAuthors(1) = "Hume"
        aryAuthors(2) = "Plato"
        Array.Reverse(aryAuthors)
 
 
 
        For Each myElement In aryAuthors
            Console.WriteLine(myElement) ' Returns elements in reverse
        Next
 
 
 
 
 
 
        'Prevent console from closing before you press enter
        Console.ReadLine()
 
    End Sub
 
End Class
 
 
 
 

Module Module1
 
    Sub Main()
 
 
        Dim myclsArrayReverse As New clsArrayReverse
        myclsArrayReverse.Main()
 
 
 
    End Sub
 
End Module
 
 
 
 

1. Install Visual Basic (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.vb

Instructions:

1. Use Visual Basic 2010 Express or Standard Edition
2. Create new project;
   • Click File/New Project
   • Select Console Application Template
   • Select Visual Basic for Language
   • name of project could be VBNET_Syntax.
3. Add New folder named "DataStructures"
   • Right-click project name in solution explorer;
   • add new folder;
   • name of folder could be: DataStructures
4. Add Class Named clsArrayReverse to DataStructures folder
   • Right-click DataStructures folder;
   • add new item;
   • Select class
   • Class name could be clsArrayReverse
5. Click on Visual Basic in code in step 1 above to copy code into clsArrayReverse.vb
6. Click on Visual Basic in code in step 2 above to copy code into Module1.vb
7. Click green arrow or press F5 to run program

ArrayOneDimensional Example Output Screenshot

Step 1: Click Visual Basic to Cut-n-paste code into clsArrayOneDimensional.vb

Public Class clsArrayOneDimensional
 
    Public Sub Main()
 
 
        '****************************************************************************************
        '
        ' Purpose: Creates one dimensional array
        '
        ' Syntax: 	arrayname(upperbound) As type
        '
        ' Parameter1: upperbound - specifies number of elements in array
        ' Arrays are zero based so there is one more element 
        '  than the upperbound specifies
        '
        ' Result: array - contains a set of elements
        '
        ' Syntax2: 	arrayname() As type
        ' ReDim [Preserve] arrayname(upperbound) 
        '
        ' Parameter1: Preserve - optional - specifies that existing data 
        ' in array is to be kept
        '
        ' Parameter2: upperbound - specifies number of elements in array
        ' Arrays are zero based so there is one more element
        '  than the upperbound specifies
        '
        ' Result: array - initial array is set to nothing and then
        ' the ReDim is used to specify size.
        '
        ' Quick Example: Dim aryIntegers(9) as Integer
        ' Dim aryStrings() As String 'size not specified so ReDim is needed
        ' Dim aryObjects(2) As myBook 'array of book objects
        '
        '****************************************************************************************
        ' This example is from http://idealprogrammer.com
 
        '****************************************************************************************
        Console.WriteLine("Example #1: Dim aryIntegers(9) as Integer")
        '****************************************************************************************
 
        Dim aryIntegers(9) As Integer
 
        Dim intCtr As Integer = 0
 
        'assign values to each element of array
        For intCtr = 0 To 9
            aryIntegers(intCtr) = intCtr
        Next
 
        ' find average value of elements in array
        Dim intAvg As Integer = 0
        Dim intElement As Integer = 0
        Dim intSum As Integer = 0
        Dim intCount As Integer = 0
 
        For Each intElement In aryIntegers
            intSum = intElement + intSum
            intCount = intCount + 1
        Next
 
        intAvg = intSum / intCount
 
 
 
 
 
        Console.WriteLine(intAvg.ToString()) ' Returns 4
 
 
        'write blank line to make output easier to read
        Console.WriteLine()
 
        '****************************************************************************************
        Console.WriteLine("Example #2: 	Dim aryStrings() As String - size is not specified at first")
        '****************************************************************************************
 
        Dim aryStrings() As String
 
        'do something like read a file to determine length of table
 
        ReDim aryStrings(2)
 
        'assign values to elements
 
        aryStrings(0) = "First"
        aryStrings(1) = "Second"
        aryStrings(2) = "Third"
 
        ' you decide you want to add another element
 
        ReDim Preserve aryStrings(3)
 
        aryStrings(3) = "Forth"
 
        For Each strElement As String In aryStrings
            Console.WriteLine(strElement) ' Returns the array one element at a time
        Next
 
        'write blank line to make output easier to read
        Console.WriteLine()
 
        '****************************************************************************************
        Console.WriteLine("Example #3: 	Dim aryObject() As myBook - array of class objects")
        '****************************************************************************************
 
        Dim aryObjects(2) As myBook
 
 
        'assign values to elements
        Dim oBook1 As New myBook
        oBook1.Author = "Plato"
        oBook1.Title = "Republic"
        aryObjects(0) = oBook1
 
        Dim oBook2 As New myBook
        oBook2.Author = "Aristotle"
        oBook2.Title = "Ethics"
        aryObjects(1) = oBook2
 
        Dim oBook3 As New myBook
        oBook3.Author = "Locke"
        oBook3.Title = "Essay Concerning Human Understanding"
        aryObjects(2) = oBook3
 
 
 
        For Each objElement As myBook In aryObjects
            Console.WriteLine(String.Format("{0} - {1}", objElement.Author, objElement.Title)) ' Returns the array one element at a time
        Next
 
 
        'Prevent console from closing before you press enter
        Console.ReadLine()
 
    End Sub
 
End Class
 
Friend Class myBook
 
    Private _author As String
    Public Property Author() As String
        Get
            Return _author
        End Get
        Set(ByVal value As String)
            _author = value
        End Set
    End Property
 
 
    Private _title As String
    Public Property Title() As String
        Get
            Return _title
        End Get
        Set(ByVal value As String)
            _title = value
        End Set
    End Property
 
 
End Class
 
 
 

Module Module1
 
    Sub Main()
 
 
        Dim myclsArrayOneDimensional As New clsArrayOneDimensional
        myclsArrayOneDimensional.Main()
 
 
 
    End Sub
 
End Module
 
 
 
 

1. Install Visual Basic (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.vb

Instructions:

1. Use Visual Basic 2010 Express or Standard Edition
2. Create new project;
   • Click File/New Project
   • Select Console Application Template
   • Select Visual Basic for Language
   • name of project could be VBNET_Syntax.
3. Add New folder named "DataStructures"
   • Right-click project name in solution explorer;
   • add new folder;
   • name of folder could be: DataStructures
4. Add Class Named clsArrayOneDimensional to DataStructures folder
   • Right-click DataStructures folder;
   • add new item;
   • Select class
   • Class name could be clsArrayOneDimensional
5. Click on Visual Basic in code in step 1 above to copy code into clsArrayOneDimensional.vb
6. Click on Visual Basic in code in step 2 above to copy code into Module1.vb
7. Click green arrow or press F5 to run program