Generating system exception in asp.net

CODE FOR GENERATING SYSTEM EXCEPTION IN ASP.NET

FOLLOWING STEPS U NEED TO FOLLOW :

• Open the vs 05.
• Now,create new website.this will open the default page.
• Add a textbox and button on the same.

button1_click(object sender eventargs e)

{

if(TextBox1.Text.Length == 0)

{

throw new SystemException();

or u can write :

throw new ArgumentNullException();

}  

• Add new web form by right clicking on the solution explorer on the url of the web application.
• Add a label on the same.
• Now do the following code on the page load of the label click:

if(Page.PreviousPage != null)

{

TextBox t = (TextBox)Page.PreviousPage.FindControl("TextBox1");

if(t != null)

{

Label1.Text = t.Text;

}

}

• Now add the attribute on the source window of web form 2 in the label part:

PostBackUrl = "Default.aspx"

• Now add the directive after the page directive in the source window of the default2.aspx :

<@PreviousPageType VirtualPath = "~/Default.aspx">