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

Posted by on Tuesday, May 17, 2011 · Leave a Comment 

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

Summary: – Illustrates using with in C-Sharp ASP.NET.


View Other C-Sharp ASP.NET Type Conversion Function Examples


Purpose:
Converts Char or first character of string into Char data type

Syntax:
Convert.ToChar(expression)

Parameters Description
expression char or string

Result Data Type Description
Char only one character can be used for strings

Quick Example
TextBox1.Text = Convert.ToChar(“T”) // Returns T

Step 1: Click on cs to Cut-n-paste code into ConvertToChar.aspx.cs

using System;
using System.IO;
using System.Data;
 
//****************************************************************************************
// Purpose: Converts Char or first character of string into Char data type
//
// Syntax: 	Convert.ToChar(expression)
//
// Parameter1: expression - char or string
//
// Result: Char - only one character can be used for strings
//
// Quick Example:  TextBox1.Text = Convert.ToChar("T") // Returns T
//
//
//****************************************************************************************
// This example is from http://idealprogrammer.com
// It shows how you can use CChar syntax in C-Sharp ASP.NET
 
 
partial class _ConvertToChar : System.Web.UI.Page
{
 
    protected void Page_Load(object sender, System.EventArgs e)
    {
 
        Label1.Text = "Example #1: 	Convert.ToChar(string) ";
 
        TextBox1.Text = Convert.ToChar("T").ToString(); // Returns T
 
        Label2.Text = "Example #2: 	Convert.ToChar(char) ";
 
        char myChar = '\0';
        myChar = 'A';
        TextBox2.Text = Convert.ToChar(myChar).ToString(); // Returns A
 
 
 
    }
 
 
}

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

< %@ Page Language="VB" AutoEventWireup="false" CodeFile="ConvertToChar.aspx.cs" Inherits="_ConvertToChar" %>
 
< !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:

C-Sharp ASP.NET Syntax Functions ConversionFunctions ConvertToChar
  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 “Functions”
    • Right-click project name in solution explorer;
    • add new folder;
    • name of folder could be: Functions
  4. Add New subfolder named “ConversionFunctions”
    • Right-click Functions folder in solution explorer;
    • add new folder;
    • name of folder could be: ConversionFunctions
  5. Add New subfolder named “TypeConversionFunctions”
    • Right-click Functions folder in solution explorer;
    • add new folder;
    • name of folder could be: TypeConversionFunctions
  6. Add Web Form Named ConvertToChar to TypeConversionFunctions folder
    • Right-click TypeConversionFunctions folder;
    • add new item;
    • Select Web Form
    • Check place code behind in separate file
    • Web Form name could be ConvertToChar
  7. Click on cs in step 1 at the top of this page to copy code into code-behind ConvertToChar.aspx.cs
  8. Click on XML in step 2 above to copy code into web form ConvertToChar.aspx
  9. Right-click on ConvertToChar.aspx in solution explorer and select view in browser

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