HttpException Constructor (Int32, String, Int32)
Initializes a new instance of the HttpException class using an HTTP response status code, an error message, and an exception code.
Assembly: System.Web (in System.Web.dll)
Parameters
- httpCode
-
Type:
System.Int32
The HTTP response status code displayed on the client.
- message
-
Type:
System.String
The error message displayed to the client when the exception is thrown.
- hr
-
Type:
System.Int32
The exception code that defines the error.
The following code example demonstrates the HttpException constructor of the HttpException class. The user name and e-mail information are entered by the user in the provided text boxes. If any of the text boxes are left blank, an HttpException object is created and thrown. The error code of the HttpException is obtained by the GetHttpCode method and displayed on the Web page.
Security Note
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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. |
<!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>HttpException Example</title> <script language="VB" runat="server"> Sub SubmitButton_Click(sender As Object, e As EventArgs) Try If Textbox1.Text.Length = 0 Or Textbox2.Text.Length = 0 Then ' Raise an Exception if the username or emailid field is empty. Throw New HttpException(901, "User name or e-mail ID not provided", 333) Else MyLabel.Text = "Hello " & Textbox1.Text & "<br />" MyLabel.Text += "The Weekly newsletter is mailed to :" & Textbox2.Text & "<br />" End If Catch ex As HttpException ' Display the error code returned by the GetHttpCode method. MyLabel.Text = "<h4><font color=""red"">The exception is " & ex.GetHttpCode() & _ " - " & ex.Message & "</font></h4>" End Try End Sub Sub Page_Load(sender As Object, e As EventArgs) MyLabel.Text = "" End Sub </script> </head> <body> <form runat="server" id="Form1"> <h3>HttpException Example</h3> Enter User name and E-mail <br /><br /> User Name: <asp:TextBox ID="Textbox1" Runat="server"></asp:TextBox> <br /> E-mail ID: <asp:TextBox ID="Textbox2" Runat="server"></asp:TextBox> <asp:Button ID="Button1" Text="Submit" OnClick="SubmitButton_Click" runat="server"/> <br /> <asp:label id="MyLabel" runat="server"/> </form> </body> </html>
Available since 1.1
