Coding Differences in ASP and ASP.NET

363

Case Statements

How you did it with VBScript in ASP

Select Case sStockSymbol case “MSFT”

Response.Write(“Buy”)

case “ORCL” Response.Write(“Sell”)

case else Response.Write(“Hold”)

End Select

How you do it with VB .NET in ASP.NET

Select (sStockSymbol) case “MSFT” :

Response.Write(“Buy”)

case “ORCL” : Response.Write(“Sell”)

case else : Response.Write(“Hold”)

End Select

How you do it with C# in ASP.NET

switch (sStockSymbol) { case “MSFT” :

Response.Write(“Buy”);

break;

case “ORCL” : Response.Write(“Sell”); break;

default : Response.Write(“Hold”); break;

}

364	Appendix D

For Loops

How you did it with VBScript in ASP

Dim i

For i = 0 To 10

Response.Write “NewValue “ & i

Next

How you do it with VB .NET in ASP.NET

Dim i As Integer

For i = 0 To 10

Response.Write(“NewValue “ & i.ToString())

Next

How you do it with C# in ASP.NET

for (int i=0; i < 10; i++) { Response.Write(“New Value” + i.ToString());

}

While Loops

How you did it with VBScript in ASP

Dim i i = 0

Do While i < 1 Response.Write(i) i = i + 1

Loop

How you do it with VB .NET in ASP.NET

Dim i As Integer = 0

Do While i < 10 Response.Write(i.ToString()) i = i + 1

Loop

Coding Differences in ASP and ASP.NET

365

How you do it with C# in ASP.NET

int i = 0;

while (i < 10) { Response.Write(i.ToString()); i++;

}

String Concatenation

How you did it with VBScript in ASP

Dim s1, s2 s2 = “hello”

s2 = s2 & “ world”

s1 = s2 & “ !!!”

How you do it with VB .NET in ASP.NET

Dim s1, s2 As String s2 = “hello”

s2 &= “ world”

s1 = s2 & “ !!!”

How you do it with C# in ASP.NET

string s1;

string s2 = “hello”; s2 += “ world”;

s1 = s2 + “ !!!”;

Error Handling

How you did it with VBScript in ASP

Function WriteFile()

On Error Resume Next ‘Do Something ‘Raise a Fake Error Err.Raise(1000)

if Err.Number=0 Then WriteFile=”No Errors”

Else

WriteFile= Err.Number & “ was raised.” End If

End Function

366	Appendix D

How you do it with VB .NET in ASP.NET

Function WriteFile()

Try

‘Do Something

‘Raise a Fake Error

Err.Raise(1000)

Catch

Return “Error Number “ & Err.Number &” was raised.”

End Try

End Function

How you do it with C# in ASP.NET

public static string WriteFile(){ try{

/* Do Something to Raise Error */

throw new Exception(“1000”);

}

catch(Exception e){

return(“Error Number “ + e.Message + “ was raised”);

}

}

Conversion of Variable Types

How you did it with VBScript in ASP

Dim i

Dim s

Dim d

i = 3

s = CStr(i) d = CDbl(s)

How you do it with VB .NET in ASP.NET

Dim i As Integer

Dim s As String

Dim d As Double

i = 3

s = i.ToString() d = CDbl(s)

How you do it with C# in ASP.NET

int i = 10;

string s = i.ToString(); double d = double.Parse(s);

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