VB.NET ASP.NET Option Compare Source Code | Option Compare Example Syntax
Posted by asp.net videos on Saturday, March 5, 2011 · Leave a Comment
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OptionCompare Example Syntax VB.NET ASP.NET | OptionCompare | Source Code
Summary: – Illustrates using OptionCompare with Source Code Syntax Example in VB.NET ASP.NET.
*** 2. OptionCompare Syntax ***
Purpose:
Declares the default comparison method to use when comparing string data.
Syntax:
Option Compare { Binary | Text }
| Parameters | Description |
|---|
Binary/Text | Binary – Optional – compares based on binary representation – case sensitive
Text – Optional – compares based on text representation – case insensitive |
| Result Data Type | Description |
|---|
comparisons | case sensitive if binary is specified; case insensitive if
text is specified. NOTE: Option statement must appear in a file before
any other source code statements |
*** 3. OptionCompare – Quick Example *** |
|---|
TextBox1.Text = "A" = "a" ' Returns True when Option Compare Text is specified at top of page
|
*** 4. OptionCompare – Full Example *** OptionCompare Example Output Screenshot
Step 1: Click on Visual Basic to Cut-n-paste code into OptionCompare.aspx.vb
| Option Compare Text | Imports System | Imports System.IO | Imports System.Data | | | | | ' This example is from http://idealprogrammer.com | ' It shows how you can use OptionCompare syntax in VB.NET ASP.NET | '**************************************************************************************** | ' Purpose: Declares the default comparison method to use when comparing string data. | ' | ' Syntax: Option Compare { Binary | Text } | ' | ' Parameter1: Binary/Text - Binary - Optional - compares based on binary representation - case sensitive | ' Text - Optional - compares based on text representation - case insensitive | ' | ' Result: comparisons - case sensitive if binary is specified; case insensitive if | ' text is specified. NOTE: Option statement must appear in a file before | ' any other source code statements | ' | ' Quick Example: | ' TextBox1.Text = "A" = "a" ' Returns True when Option Compare Text is specified at top of page | ' | '**************************************************************************************** | | Partial Class _OptionCompare | 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: Option Compare Text " | | Dim strOptionCompareExample As String = "This is a test string" | | TextBox1.Text = "A" = "a" ' Returns True | | | End Sub | End Class | |
Step 2: Click on XML to Cut-n-paste code into OptionCompare.aspx
| < %@ Page Language="VB" AutoEventWireup="false" CodeFile="OptionCompare.aspx.vb" Inherits="_OptionCompare" %> | | < !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 OptionCompare 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 OptionCompare
- Click on Visual Basic in step 1 at the top of this page to copy code into code-behind OptionCompare.aspx.vb
- Click on XML in step 2 above to copy code into web form OptionCompare.aspx
- Right-click on OptionCompare.aspx in solution explorer and select view in browser
|
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