Error on using reference system.windows.forms;

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I want to use messagebox.show("") in my web app
but gives me this error:
Compiler Error Message: CS0234: The type or namespace name 'Windows' does not exist in the namespace 'System' (are you missing an assembly reference?)

Source Error:

Line 8: using System.Configuration;
Line 9: using System.Data;
Line 10: using System.Windows.Forms;
Line 11:
Line 12: namespace Csharp

Posted 7-Dec-12 3:11am

lovitaxxxx

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Fredrik Bornander 7-Dec-12 9:47am

You don't want to do that. It's a bad idea.

1 solution

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ZurdoDev · Accepted Answer · 2012-12-07T03:48:00

Solution 1

The web will not support showing a messagbox this way. The C# code runs on the server and generates HTML which is sent to the client and then the browser renders the HTML. If you want to show a message to the user you need to use JavaScripts alert[^] or use a jQuery plugin.

Posted 7-Dec-12 3:48am

ZurdoDev

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lovitaxxxx 7-Dec-12 9:55am

i used this and works perfectly
Response.Write(@"<script language='javascript'>alert('First Record') </script>");

ZurdoDev 7-Dec-12 9:55am

Yes, that will work. If it will ever be more complex than that you'll want to create a JavaScript file and functions but for simple things, that will work fine.