So how do you create a custom class file in asp without using visual studio or similare to compile your .dll?
Well, all you need to do is to make a c# class like below. And then compile it to a dll file. If you are using IIS, place the dll in a bin folder in your project folder.
if you use the root folder it would be:
C:\inetpub\wwwroot\bin
Compiling the dll is easy, but you need the following:
1. Download Microsoft.Net framework SDK v2.0
2. Locate the installation shortcuts in start menu, and open the SDK command prompt. Browse to the C:\inetpub\wwwroot\ and type in csc /target:library SqRtCustom.cs
3. move the SqRtCustom.cs in the bin folder
4. launch the aspx from ISS using adress localhost/index.aspx in your fav browser
The SqRtCustom.cs class file:
using System;
public class SqRtCustom {
public SqRtCustom(double nr) {
number = nr;
}
private bool isPos(){
if(number >= 0){
return true;
} else {
return false;
}
}
public double sqRoot() {
if(this.isPos()){
return Math.Sqrt(this.number);
} else {
throw new Exception("Cannot take the square root of a negative nr!");
}
}
private double number;
}
The index.aspx file:
<html>
<head>
<title>Let's do some math</title>
<script runat = "server">
protected void Page_Load(object Source, EventArgs E){
SqRtCustom[] test = new SqRtCustom[3];
test[0] = new SqRtCustom(-16);
test[1] = new SqRtCustom(0);
test[2] = new SqRtCustom(25);
Response.Write("<h1>Square root of a nr:</h1><hr />");
Response.Write("<ul>");
for(int i = 0; i < test.Length; i++){
try{
Response.Write("<li>" + test[i].sqRoot() + "</li>");
} catch(Exception error){
Response.Write("<li>" + error.Message + "</li>");
}
}
Response.Write("</ul>");
}
</script>
</head>
<body>
</body>
</html>
Mohn Foto 