VB.NET Insert() – Code Sample
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VB.NET Insert Example – Code Sample Syntax
Abstract: – Illustrates using VB.NET Insert Code Example.
*** 2. Insert Syntax ***
Purpose:
Returns a string with the specified string inserted beginning at
the specified position.
Syntax:
string.Insert(startIndex, stringtoinsert)
Parameters |
Description |
string |
Required – string that you want to insert something into
|
startIndex |
Optional. specifies where to start looking. Zero-based.
|
stringtoinsert |
Required – string that you are trying to
insert into parameter1
|
Result Data Type |
Description |
string |
Returns a string with the specified string inserted beginning at
the specified position.
|
*** 3. Insert – Quick Example ***
|
Dim strInsertExample As String = “This is a test string”
Dim intIndex As Integer = 0
‘ First find position of word test
intIndex = strInsertExample.IndexOf(“test”)
‘ Insert “simple” before “test”
Console.WriteLine(strInsertExample.Insert(intIndex, “simple “))
|
*** 4. Insert – Full Example ***
Insert Example Output Screenshot
Step 1: Click Visual Basic to Cut-n-paste code into clsInsert.vb
Public Class clsInsert
Public Sub Main()
'****************************************************************************************
' Purpose: Returns a string with the specified string inserted beginning at
' the specified position.
'
' Syntax: string.Insert(startIndex, stringtoinsert)
'
' Parameter1: string - Required - string that you want to insert something into
'
' Parameter2: startIndex - Optional. specifies where to start looking. Zero-based.
'
' Parameter3: stringtoinsert - Required - string that you are trying to
' insert into parameter1
'
' Result: string - Returns a string with the specified string inserted beginning at
' the specified position.
'
' Quick Example: Dim strInsertExample As String = "This is a test string"
' Dim intIndex As Integer = 0
' ' First find position of word test
' intIndex = strInsertExample.IndexOf("test")
' ' Insert "simple" before "test"
' Console.WriteLine(strInsertExample.Insert(intIndex, "simple "))
'
'****************************************************************************************
Console.WriteLine("Example #1: string.Insert(startIndex, stringtoinsert) ")
Dim strInsertExample As String = "This is a test string"
Dim intIndex As Integer = 0
' First find position of word test
intIndex = strInsertExample.IndexOf("test")
' Insert "simple" before "test"
Console.WriteLine(strInsertExample.Insert(intIndex, "simple "))
'write blank line to make output easier to read
Console.WriteLine()
'Prevent console from closing before you press enter
Console.ReadLine()
End Sub
End Class |
Public Class clsInsert
Public Sub Main()
'****************************************************************************************
' Purpose: Returns a string with the specified string inserted beginning at
' the specified position.
'
' Syntax: string.Insert(startIndex, stringtoinsert)
'
' Parameter1: string - Required - string that you want to insert something into
'
' Parameter2: startIndex - Optional. specifies where to start looking. Zero-based.
'
' Parameter3: stringtoinsert - Required - string that you are trying to
' insert into parameter1
'
' Result: string - Returns a string with the specified string inserted beginning at
' the specified position.
'
' Quick Example: Dim strInsertExample As String = "This is a test string"
' Dim intIndex As Integer = 0
' ' First find position of word test
' intIndex = strInsertExample.IndexOf("test")
' ' Insert "simple" before "test"
' Console.WriteLine(strInsertExample.Insert(intIndex, "simple "))
'
'****************************************************************************************
Console.WriteLine("Example #1: string.Insert(startIndex, stringtoinsert) ")
Dim strInsertExample As String = "This is a test string"
Dim intIndex As Integer = 0
' First find position of word test
intIndex = strInsertExample.IndexOf("test")
' Insert "simple" before "test"
Console.WriteLine(strInsertExample.Insert(intIndex, "simple "))
'write blank line to make output easier to read
Console.WriteLine()
'Prevent console from closing before you press enter
Console.ReadLine()
End Sub
End Class
Step 2: Click Visual Basic to Cut-n-paste code into Module1.vb
Module Module1
Sub Main()
Dim myclsInsert As New clsInsert
myclsInsert.Main()
End Sub
End Module |
Module Module1
Sub Main()
Dim myclsInsert As New clsInsert
myclsInsert.Main()
End Sub
End Module
Prerequistes:
- Install Visual Basic (Express or Standard Edition)
- Install SQL Server Express
- Download Northwind and pubs Database
- Attach Northwind Database to Databases in Sql Express
- 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:
- Use Visual Basic 2010 Express or Standard Edition
- Create new project;
- Click File/New Project
- Select Console Application Template
- Select Visual Basic for Language
- name of project could be VBNET_Syntax.
- Add New folder named “StringManipulation”
- Right-click project name in solution explorer;
- add new folder;
- name of folder could be: StringManipulation
- Add Class Named clsInsert to StringManipulation folder
- Right-click StringManipulation folder;
- add new item;
- Select class
- Class name could be clsInsert
- Click on Visual Basic in code in step 1 above to copy code into clsInsert.vb
- Click on Visual Basic in code in step 2 above to copy code into Module1.vb
- Click green arrow or press F5 to run program
|