String contains special characters
string-contains-special-characters.aspx
<%@ Page Language="C#" AutoEventWireup="true"%>
<!DOCTYPE html>
<script runat="server">
protected void Button1_Click(object sender, System.EventArgs e)
{
//this section create string variables.
string colors = "1 Red 2 green 3 blue";
string colors2 = "#red #green #blue";
string colors3 = "red* green* blue*";
Label1.Text = "string..................<br />";
Label1.Text += "colors: " + colors;
Label1.Text += "<br />colors2: " + colors2;
Label1.Text += "<br />colors3: " + colors3;
//check string contains any special characters without space
Regex rex = new Regex("^[a-z0-9 ]+$",RegexOptions.IgnoreCase);
Boolean result = rex.IsMatch(colors);
Boolean result2 = rex.IsMatch(colors2);
Boolean result3 = rex.IsMatch(colors3);
Label1.Text += "<br /><br />colors contains no special characters without space? " + result.ToString();
Label1.Text += "<br /><br />colors2 contains no special characters without space? " + result2.ToString();
Label1.Text += "<br /><br />colors3 contains no special characters without space? " + result3.ToString();
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title>c# example - string contains special characters</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<h2 style="color:MidnightBlue; font-style:italic;">
c# example - string contains special characters
</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 contains special characters"
OnClick="Button1_Click"
Height="40"
Font-Bold="true"
/>
</div>
</form>
</body>
</html>
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