C-Sharp Replace Example | ASP.NET C# Replace Syntax | Source Code

Posted by on Saturday, April 2, 2011 · Leave a Comment 

C-Sharp Replace Example | ASP.NET C# Replace Syntax | Source Code

Purpose: – Here is a that illustrates the .

View Other C-Sharp ASP.NET Source Code Examples »

Step 1: Click on C# to Cut-n-paste code into Replace.aspx.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
 
// This example is from http://idealprogrammer.com
// It shows how you can use Replace syntax in C-Sharp ASP.NET
//****************************************************************************************
// Example #1: Replace(string, oldstring, newstring)
// Returns a string with all occurrences of the old string in the string
// replaced by the new string.
//****************************************************************************************
 
 
 
public partial class StringManipulation_Replace : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        Label1.Text = "Example #1: Replace(strField, strOldField, strNewField)";
 
        string strField = "This is my string";
        string strOldField = "my";
        string strNewField = "your";
 
        // Replace rest of string starting with word "test"
        Label2.Text = strField.Replace(strOldField, strNewField); //Returns This is your string
 
 
    }
}

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

< %@ Page Language="C#" AutoEventWireup="true" CodeFile="Replace.aspx.cs" Inherits="StringManipulation_Replace" %>
 
< !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:label ID="Label2" runat="server" Text="Label"></asp:label><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:

CS Syntax String Manipulation Replace
CS Syntax String Manipulation Replace
  1. Use Visual Web Developer 2010
  2. Create new web site;
    • Click File/New Web Site
    • Select ASP.NET Website Template
    • Select C-Sharp for Language
    • name of Web Site could be CSharp_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 Replace.aspx 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 Replace.aspx
  5. Click on C-Sharp in step 1 at the top of this page to copy code into web form Replace.aspx
  6. Click on XML in step 2 above to copy code into code-behind Replace.aspx.cs
  7. Right-click on Replace.aspx in solution explorer and select view in browser

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