VB.NET ASP.NET Insert() Source Code Syntax Example
Posted by asp.net videos on Sunday, February 20, 2011 · Leave a Comment
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Insert Example Syntax VB.NET ASP.NET | Insert | Source Code
Summary: – Illustrates using Insert with Source Code Syntax Example in VB.NET ASP.NET.
*** 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
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:- Install Visual Web Developer 2010
- Install SQL Server Express
- Download Northwind and Pubs Databases
- Attach Northwind Database to Databases in Sql Express
- 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: - Use Visual Web Developer 2010
- 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.
- Add New folder named "StringManipulation"
- Right-click project name in solution explorer;
- add new folder;
- name of folder could be: StringManipulation
- 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
- Click on Visual Basic in step 1 at the top of this page to copy code into code-behind Insert.aspx.vb
- Click on XML in step 2 above to copy code into web form Insert.aspx
- Right-click on Insert.aspx in solution explorer and select view in browser
|
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