StrComp() Example Syntax VB.NET ASP.NET | StrComp() | Source Code

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

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


 *** 1. Download Source Code *** 

VB.NET Syntax StringManipulation StrComp 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. Check back often to download the latest version of the project with even more code samples.


 *** 2. StrComp Syntax *** 


Purpose:
Returns -1, 0, or 1, based on the result of a string comparison.
-1 String1 sorts ahead of String2
0 String1 is equal to String2
1 String1 sorts after String2


Syntax:
StrComp(string1,string2,comparemethod) – returns integer

Parameters Description
string1 Required – string input that you want to
compare
string2 Required – string input that you want to
compare
comparemethod Optional – CompareMethod.Text – does case
insensitive comparisons; CompareMethod.Binary – does case sensitive
comparisons. If Comparemethod is omitted,
the Option Compare setting determines the compare method

Result Data Type Description
integer Returns -1, 0, or 1, based on the result of a string comparison.
-1 String1 sorts ahead of String2
0 String1 is equal to String2
1 String1 sorts after String2



 *** 3. StrComp – Quick Example *** 

Dim strString1 As String = "XYZ"
Dim strString2 As String = "xyz"
TextBox1.Text = StrComp(strString1, strString2, CompareMethod.Text).ToString 'Returns 0
TextBox1.Text = StrComp(strString1, strString2, CompareMethod.Binary).ToString 'Returns -1
strString2 = "ABC"
TextBox1.Text = StrComp(strString1, strString2).ToString 'Returns 1


 *** 4. StrComp – Full Example *** 

StrComp Example Output Screenshot


VB.NET Syntax StringManipulation StrComp screenshot


Step 1: Click on Visual Basic to Cut-n-paste code into StrComp.aspx.vb
 Visual Basic |  copy code |? 
Imports System
Imports System.IO
Imports System.Data
 
' This example is from http://idealprogrammer.com
' It shows how you can use StrComp syntax in VB.NET ASP.NET
 
'****************************************************************************************
' Purpose: Returns -1, 0, or 1, based on the result of a string comparison. 
' -1  String1 sorts ahead of String2
'  0  String1 is equal to String2
'  1  String1 sorts after String2
'
' Syntax: 	StrComp(string1,string2,comparemethod) - returns integer
'
' Parameter1: string1 - Required - string input that you want to 
' compare
'
' Parameter2: string2 - Required - string input that you want to 
' compare
'
' Parameter3: comparemethod - Optional - CompareMethod.Text - does case 
' insensitive comparisons; CompareMethod.Binary - does case sensitive
' comparisons. If Comparemethod is omitted, 
' the Option Compare setting determines the compare method 
'
' Result: integer -  Returns -1, 0, or 1, based on the result of a string comparison. 
' -1  String1 sorts ahead of String2
'  0  String1 is equal to String2
'  1  String1 sorts after String2
'
' Quick Example:     Dim strString1 As String = "XYZ"
' Dim strString2 As String = "xyz"
' TextBox1.Text = StrComp(strString1, strString2, CompareMethod.Text).ToString 'Returns 0
' TextBox1.Text = StrComp(strString1, strString2, CompareMethod.Binary).ToString 'Returns -1
' strString2 = "ABC"
' TextBox1.Text = StrComp(strString1, strString2).ToString 'Returns 1
'
'****************************************************************************************
 
 
Partial Class _StrComp
    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: 	StrComp(string1,string2,comparemethod)"
 
        Dim strString1 As String = "XYZ"
        Dim strString2 As String = "xyz"
 
        TextBox1.Text = Microsoft.VisualBasic.StrComp(strString1, strString2, CompareMethod.Text).ToString 'Returns 0
        TextBox2.Text = Microsoft.VisualBasic.StrComp(strString1, strString2, CompareMethod.Binary).ToString 'Returns -1
        strString2 = "ABC"
        TextBox3.Text = Microsoft.VisualBasic.StrComp(strString1, strString2).ToString 'Returns 1
 
 
 
 
    End Sub
End Class


Step 2: Click on XML to Cut-n-paste code into StrComp.aspx
 XML |  copy code |? 
< %@ Page Language="VB" AutoEventWireup="false" CodeFile="StrComp.aspx.vb" Inherits="_StrComp" %>
 
< !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 StrComp
  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 StrComp 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 StrComp
  5. Click on Visual Basic in step 1 at the top of this page to copy code into code-behind StrComp.aspx.vb
  6. Click on XML in step 2 above to copy code into web form StrComp.aspx
  7. Right-click on StrComp.aspx in solution explorer and select view in browser

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