Following is the code-snippet demostrate functions:
<%@ Page Language="C#" Debug="true" %>
<script runat="server">
void Page_Load()
{
if (IsPostBack)
{
// Assign the result of Disguise() to a variable named DisguisedWord
string DisguisedWord = Disguise(txtIn1.Text);
lblDisguised.Text = DisguisedWord;
// Assign the result of JoinWithDash() to the property of an object
lblJoinedText.Text = JoinWithDash(txtIn1.Text, txtIn2.Text);
// Use the result of JoinWithDash() as the argument of Blank()
lblJoinedAndBlanked.Text = Blank(JoinWithDash(txtIn1.Text, txtIn2.Text));
// Use the result of IsString1Longer() as the expression in a control structure
if (IsString1Longer(txtIn1.Text, txtIn2.Text))
{
lblCompareLengths.Text = "String one is longer than string two.";
}
else
{
lblCompareLengths.Text = "String one is shorter than or the same length as string two.";
}
}
}
// 'Disguises' a string by adding one to each characters ASCII value
string Disguise(string String1)
{
string DisguisedString;
Byte[] myBytes = System.Text.Encoding.ASCII.GetBytes(String1);
for (int i=0;i<myBytes.Length;i++)
{
myBytes[i] += 1;
}
char[] myChars=System.Text.Encoding.ASCII.GetChars(myBytes);
DisguisedString = new string(myChars);
return DisguisedString;
}
// Returns a concatenation of two texts with a separating hyphen
string JoinWithDash(string String1, string String2)
{
return String1 + " - " + String2;
}
// Returns the string, replacing all characters with asterisks
string Blank(string String1)
{
string BlankString = "";
for (int i=1; i <= String1.Length; i++)
{
BlankString += "*";
}
return BlankString;
}
// Checks if string1 is longer than string2. Returns true if this is so
bool IsString1Longer(string String1, string String2)
{
return (String1.Length > String2.Length);
}
</script>
<html>
<head>
<title>Chapter 5 : Using Functions Which Return Values</title>
</head>
<body>
<form runat="server">
<asp:TextBox id="txtIn1" runat="server"></asp:TextBox>
<br />
<asp:TextBox id="txtIn2" runat="server"></asp:TextBox>
<br />
<asp:Button id="Button1" runat="server" Text="Submit"></asp:Button>
<br />
Function used in a variable: <asp:Label id="lblDisguised" runat="server"></asp:Label>
<br />
Function used as value for an object property: <asp:Label id="lblJoinedText" runat="server"></asp:Label>
<br />
Function used as an argument in another function: <asp:Label id="lblJoinedAndBlanked" runat="server"></asp:Label>
<br />
Function used as an expression: <asp:Label id="lblCompareLengths" runat="server"></asp:Label>
</form>
</body>
</html>
|
No responses found. Be the first to respond and make money from revenue sharing program.
|