VB.NET ASP.NET Insert() Source Code Syntax Example

Posted by on Sunday, February 20, 2011 · Leave a Comment 

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

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

 *** 1. Download Source Code *** 
VB.NET Syntax StringManipulation Insert download Download Source Code for All VB ASP.NET Examples in One Project – source code for hundreds of VB.NET ASP.NET examples neatly organized in a single project.

 *** 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”
TextBox1.Text = strInsertExample.Insert(intIndex, “simple “)

 *** 4. Insert – Full Example *** 

Insert Example Output Screenshot


VB.NET Syntax StringManipulation Insert screenshot


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

Imports System
Imports System.IO
Imports System.Data
 
 
' This example is from http://idealprogrammer.com
' It shows how you can use Insert syntax in VB.NET ASP.NET
'****************************************************************************************
' 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"
' TextBox1.Text = strInsertExample.Insert(intIndex, "simple ")
'
'****************************************************************************************
 
Partial Class _Insert
    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: Insert(startIndex, string) "
 
        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"
        TextBox1.Text = strInsertExample.Insert(intIndex, "simple ")
 
 
    End Sub
End Class

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

< %@ Page Language="VB" AutoEventWireup="false" CodeFile="Insert.aspx.vb" Inherits="_Insert" %>
 
< !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:

VB.NET ASP.NET Syntax StringManipulation Insert
  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 “StringManipulation”
    • Right-click project name in solution explorer;
    • add new folder;
    • name of folder could be: StringManipulation
  4. Add Web Form Named Insert to StringManipulation folder
    • Right-click StringManipulation folder;
    • add new item;
    • Select Web Form
    • Check place code behind in separate file
    • Web Form name could be Insert
  5. Click on Visual Basic in step 1 at the top of this page to copy code into code-behind Insert.aspx.vb
  6. Click on XML in step 2 above to copy code into web form Insert.aspx
  7. Right-click on Insert.aspx in solution explorer and select view in browser

Filed under Code Samples · Tagged with , , , , ,