473,396 Members | 1,942 Online
Bytes | Software Development & Data Engineering Community
Post Job

Home Posts Topics Members FAQ

Join Bytes to post your question to a community of 473,396 software developers and data experts.

Easy way of validating data in webForm textbox?

VMI
Is there an easy way for me to validate what's entered in a webForm
textbox? For example, how can I check that the user only enters a
number (and not letters) in a textbox?
I have VS 2005.
Thanks.

Sep 11 '06 #1
2 1615
To test for a valid floating-point number, use Convert.ToSingle:
if it throws an exception [which you can catch], the number is not
valid.

Colin Williams

Sep 11 '06 #2
Hello VMI,

use the standard asp.net validator controls

VIs there an easy way for me to validate what's entered in a webForm
Vtextbox? For example, how can I check that the user only enters a
Vnumber (and not letters) in a textbox?
VI have VS 2005.
VThanks.
---
WBR,
Michael Nemtsev :: blog: http://spaces.live.com/laflour

"At times one remains faithful to a cause only because its opponents do not
cease to be insipid." (c) Friedrich Nietzsche
Sep 11 '06 #3

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

6
by: Alex Bink | last post by:
Hi, I have a validating event on a textbox in which I want to prevent the user to leave the textbox without entering the right data. Only if he clicks on another specific control he is allowed...
0
by: Angel | last post by:
i would like the comunity's opinion on validating a Webform. I was wondering should i validate data that the user enters on a Webform via a Backend process like SQL Server 2000 or should I use...
5
by: nicholas | last post by:
got 1 asp.net page with 1 webform on that webform there are 2 textboxes and 2 buttons each button submits the associated textbox. each button should validate only the associated textbox ...
0
by: Gary Shell | last post by:
I am experiencing some strange behavior between a UserControl's validating event and a treeview control. Initially, I thought it was related to an issue in the Knowledgebase article 810852...
21
by: Darin | last post by:
I have a form w/ a textbox and Cancel button on it. I have a routine to handle textbox.validating, and I have the form setup so the Cancel button is the Cancel button. WHen the user clicks on...
5
by: ameen.abdullah | last post by:
Hi Guys, I have a textbox in windows form that should only accept alphabets, numbers, spaces and underscore. If the textbox contains anyother character it should display a msg at the time of...
3
by: TheSteph | last post by:
Hi Experts ! I have a Winform Program in C# / .NET 2.0 I would like to ensure that a value in a TextBox is a valid Int32 when user get out of it (TextBox loose focus)
1
by: =?Utf-8?B?bGpsZXZlbmQy?= | last post by:
I've noticed that controls do not raise a Validating event if they are contained in a ToolStripDropDown via a ToolStripControlHost item. Please run the following sample and follow the instructions...
8
by: Peted | last post by:
I have an amazing problem which i think i have no hope of solving Im working with a c# dot net module that is hosted by and runs under a delphi form envrioment. Dont ask me how this insanity has...
0
by: ryjfgjl | last post by:
In our work, we often receive Excel tables with data in the same format. If we want to analyze these data, it can be difficult to analyze them because the data is spread across multiple Excel files...
0
by: emmanuelkatto | last post by:
Hi All, I am Emmanuel katto from Uganda. I want to ask what challenges you've faced while migrating a website to cloud. Please let me know. Thanks! Emmanuel
0
BarryA
by: BarryA | last post by:
What are the essential steps and strategies outlined in the Data Structures and Algorithms (DSA) roadmap for aspiring data scientists? How can individuals effectively utilize this roadmap to progress...
1
by: nemocccc | last post by:
hello, everyone, I want to develop a software for my android phone for daily needs, any suggestions?
0
marktang
by: marktang | last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However,...
0
by: Hystou | last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can...
0
by: Hystou | last post by:
Overview: Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows...
0
tracyyun
by: tracyyun | last post by:
Dear forum friends, With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each...
0
agi2029
by: agi2029 | last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing,...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.