Convert String to ASCII values
The String represents text as a sequence of UTF-16 code units. The String is a sequential collection of characters that is used to represent text. The String is a sequential collection of System.Char objects.
The following .net c# tutorial code demonstrates how we can convert a String instance to ASCII values. Here we will use ASCII encoding and the Encoding class GetBytes() method.
The Encoding class represents the character encoding. Encoding is the process of transforming a set of Unicode characters into a sequence of bytes and decoding is the process of transforming a sequence of encoded bytes into a set of Unicode characters. The Encoding ASCII property gets an encoding for the ASCII (7-bit) character set.
The Encoding GetBytes() method when overridden in a derived class, encodes a set of characters into a sequence of bytes. The Encoding GetBytes(String) method overload when overridden in a derived class, encodes all the characters in the specified string into a sequence of bytes.
The GetBytes(string s) method’s s parameter value is the String containing the characters to encode. This method returns a byte array containing the results of encoding the specified set of characters. So using this Encoding GetBytes(String) method we can get the ASCII values from a String instance.
The Encoding GetBytes(string s) method throws ArgumentNullException if the provided s is null. It also throws EncoderFallbackException if a fallback occurred and EncoderFallback is set to EncoderExceptionFallback.
The following .net c# tutorial code demonstrates how we can convert a String instance to ASCII values. Here we will use ASCII encoding and the Encoding class GetBytes() method.
The Encoding class represents the character encoding. Encoding is the process of transforming a set of Unicode characters into a sequence of bytes and decoding is the process of transforming a sequence of encoded bytes into a set of Unicode characters. The Encoding ASCII property gets an encoding for the ASCII (7-bit) character set.
The Encoding GetBytes() method when overridden in a derived class, encodes a set of characters into a sequence of bytes. The Encoding GetBytes(String) method overload when overridden in a derived class, encodes all the characters in the specified string into a sequence of bytes.
The GetBytes(string s) method’s s parameter value is the String containing the characters to encode. This method returns a byte array containing the results of encoding the specified set of characters. So using this Encoding GetBytes(String) method we can get the ASCII values from a String instance.
The Encoding GetBytes(string s) method throws ArgumentNullException if the provided s is null. It also throws EncoderFallbackException if a fallback occurred and EncoderFallback is set to EncoderExceptionFallback.
string-to-ascii.aspx
<%@ Page Language="C#" AutoEventWireup="true"%>
<!DOCTYPE html>
<script runat="server">
protected void Button1_Click(object sender, System.EventArgs e)
{
//this section create a string variable.
string birds = "Smew. Penguin.";
Label1.Text = "string of birds..................<br />";
Label1.Text += birds;
//this line convert string to byte array.
byte[] bytes = Encoding.ASCII.GetBytes(birds);
Label1.Text += "<br /><br />ASSCII codes of string characters........";
foreach(byte b in bytes)
{
//represent the ASCII code of characters.
Label1.Text += "<br />" + b;
}
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title>c# example - string to ascii</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<h2 style="color:MidnightBlue; font-style:italic;">
c# example - string to ascii
</h2>
<hr width="550" align="left" color="Gainsboro" />
<asp:Label
ID="Label1"
runat="server"
Font-Size="Large"
>
</asp:Label>
<br /><br />
<asp:Button
ID="Button1"
runat="server"
Text="string to ascii"
OnClick="Button1_Click"
Height="40"
Font-Bold="true"
/>
</div>
</form>
</body>
</html>

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