HttpException.HttpException(Int32, String, Exception) Constructor

Initializes a new instance of the HttpException class using an HTTP response status code, an error message, and the InnerException property.

Namespace: System.Web
Assembly: System.Web (in system.web.dll)

public:
HttpException (
	int httpCode, 
	String^ message, 
	Exception^ innerException
)
public HttpException (
	int httpCode, 
	String message, 
	Exception innerException
)
public function HttpException (
	httpCode : int, 
	message : String, 
	innerException : Exception
)
Not applicable.

Parameters

httpCode

The HTTP response status code displayed on the client.

message

The error message displayed to the client when the exception is thrown.

innerException

The InnerException, if any, that threw the current exception.

When handling exceptions, it can be useful to capture a series of related exceptions with the outer exception being thrown in response to an inner exception.

A reference to the inner exception that caused the outer exception is available from the InnerException property of the outer exception. This mechanism preserves the error information that is carried by earlier exceptions, including the original exceptions, while allowing you to create more meaningful outer exceptions. For more information, see InnerException.

The following code example demonstrates the HttpException constructor of the HttpException class. The CheckNumber method accepts a user-entered value and checks whether it is an integer. If the value is not an integer, an exception is thrown, and then a new HttpException object containing the HTTP response status code, the exception's message, and any inner exception is created. That exception is caught in the Button_Click event handler and the error message, error code, and inner exception are displayed.

Security noteSecurity Note:

This example has a text box that accepts user input, which is a potential security threat. By default, ASP.NET Web pages validate that user input does not include script or HTML elements. For more information, see Script Exploits Overview (Visual Studio).

No code example is currently available or this language may not be supported.

<%@ Import Namespace="System.Drawing" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
   <head>
    <title>Example for HttpException</title>
<script language="VJ#" runat="server">
        void CheckNumber() throws HttpException
        {
            try {
                // Check whether the value is an integer.
                String convertInt = textbox1.get_Text();
                Convert.ToInt32(convertInt);
            }
            catch(Exception ex) {
                // Throw an HttpException object that contains the HTTP error 
                // code, message, and inner exception.
                throw new HttpException(500, "The entered value is not an " 
                    + "integer.", ex);
            }
        } //CheckNumber
        
        void Button_Click(Object sender, EventArgs e)
        {
            try {
                CheckNumber();
                label1.set_Text("The integer value you entered is: " 
                    + textbox1.get_Text());
            }
            catch(HttpException exp) {
                // Display the exception thrown.
                label1.set_ForeColor(Color.get_Red());
                label1.set_Text("An HttpException was raised!: " 
                    + exp.get_Message());
                System.Exception myInnerException = exp.get_InnerException();
                
                // Display the inner exception.
                label2.set_Text("The InnerException is : " 
                    + myInnerException.GetType());
            }
        } //Button_Click
     
        void page_load(Object sender,EventArgs e)
        {
            label1.set_Text("");
            label2.set_Text("");
        } //page_load
      </script>
   </head>

   <body>
      <center>
         <h3>Example for HttpException</h3>
         <form id="WebForm9" method="post" runat="server">
            <b>Enter the value in the text box </b>
            <br />
            <asp:TextBox Runat="server" ID="textbox1"></asp:TextBox>
            <br />
            <asp:Button Text="Click Here" OnClick="Button_Click" Runat="server" ID="Button1"></asp:Button>
            <br />
            <b>
               <asp:Label Runat="server" ID="label1"></asp:Label>
               <br />
               <asp:Label Runat="server" ID="label2"></asp:Label>
            </b>
         </form>
      </center>
   </body>
</html>

Windows 98, Windows Server 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

Community Additions

ADD
Show: