473,585 Members | 2,496 Online
Bytes | Software Development & Data Engineering Community
+ Post

Home Posts Topics Members FAQ

Custom control validation

I have created a custom control. It has:
-label
-button
-list of textboxes
-list of dropdownlists.
I want to use a custom validator to perform some validation, but
somehow I can't fo it. The code looks like this:

public class ColumnSelector : Panel
{
public TextBox[] textBoxes;
public DropDownList[] lists;
CustomValidator validator;
Label label;
Button button;

public ColumnSelector( int numberOfColumns , string[] values)
{
//initializing textboxes etc.
validator = new CustomValidator ();
validator.Error Message = "You must choose a different value for
each column";
lists[0].ID = "VALIDATED_CONT ROL";
validator.Contr olToValidate = lists[0].ID;
validator.Displ ay = ValidatorDispla y.Dynamic;//?

this.Controls.A dd(label);
for (int i = 0; i < number; i++)
this.Controls.A dd(textBoxes[i]);
for (int i = 0; i < number; i++)
this.Controls.A dd(lists[i]);
this.Controls.A dd(button);
this.Controls.A dd(validator);
}

protected void validator_Serve rValidate(objec t source,
ServerValidateE ventArgs args)
{
//validation here
//if ok args.IsValid = true;
//else args.IsValid = false;
}

protected void button_Click(ob ject sender, EventArgs e)
{
validator.Valid ate();
}
}

This control was created without using GUI so maybe I have forgotten
something? (linking validator to the textbox?). Please let me know
what's wrong with it.

There is also some other problem, that looks like a bug to me, but
maybe it isn't...
I want all of the dropdownlists to have different selectedindex value
initially (unless there's more dropdownlists than values), but somehow
they all have the same value (the value of the last dropdownlist
selected index actually).

ListItem[] items = new ListItem[listOfItems];
for (int i = 0; i < values.Length; i++)
{
items[i] = new ListItem(values[i]);
}

for (int i = 0; i < number; i++)
{
lists[i] = new DropDownList();
lists[i].Items.AddRange (items);
if (i < values.Length) lists[i].SelectedIndex = i;
else lists[i].SelectedIndex = values.Length - 1;
}

Is it a bug or my error somewhere?

Mik

Dec 27 '06 #1
0 1569

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

Similar topics

2
3896
by: Pham Nguyen | last post by:
Has anyone seen an example of a textbox server control that has built-in client-side validation? I'd like to build a server control that extends the System.Web.UI.WebControls.TextBox class to allow javascript checks for things like valid e-mail addresses or phone numbers (without having to add a separate control for validation). One idea I...
2
3718
by: Barbara Alderton | last post by:
I setup some standard Required Field Validation controls and one Custom validation control on an ASP.NET page (within a user control) to validate text entry. I also setup a Summary Control to post all the messages to a message box (ShowMessageBox=true). The required field validation error messages show up in the summary just fine but I can't...
1
2419
by: Stephen Adam | last post by:
Hi there, I have written a custom validation control which checks to see of an input field is not empty and contains only numeric data. I was using a regular expression validation control but was unable to get it fail if a field was blank. My problem now is that while my custom validation control will detect if a field matches my...
5
2636
by: | last post by:
Hi all, Has anyone been able to write some custom javascript on the onclick event of submit button to do certain things like disable submit button, only submit form once etc. This was a breeze in 1.1 since I could edit the .js file. Now in 2.0 I can no longer do this. Also, my code would have to be called after all client-side validation...
0
1047
by: Marek | last post by:
Hi all, I have custrom control with four elements: text box, regular expression validator, required field validator and custom validator. Next this control is dragged on to web site with several controls. All controls has the same validation group. When I press button for this validation group then all validations runs ok except custom...
3
8241
by: Andy | last post by:
Hi folks, I have a customvalidator control that works properly if it isn't contained in an ASP:TABLE. But, when I place it inside an ASP:TABLE, I find that _ServerValidate doesn't get fired, even if I force the customvalidator to validate by invoking its validate() method after a button is clicked: ...
1
4784
by: rn5a | last post by:
I have created a custom control button which when clicked displays a message in the JavaScript alert dialog. I could successfully compile the VB class file into a DLL & also could add it to the Toolbox in Visual Web Developer 2005 Express Edition but the alert message isn't popping up when I am implementing this control in an ASP.NET page &...
0
1384
by: rn5a | last post by:
A custom control is derived from the WebControl class & encapsulates a TextBox & a Button. When the Button is clicked, the user is shown the JavaScript confirm dialog with the 'OK' & 'Cancel' buttons. If the user clicks 'OK', the TextBox gets populated with 'true' & if 'Cancel' is clicked, the TextBox gets populated with 'false'. Note that...
2
19443
hyperpau
by: hyperpau | last post by:
Before anything else, I am not a very technical expert when it comes to VBA coding. I learned most of what I know by the excellent Access/VBA forum from bytes.com (formerly thescripts.com). Ergo, I will be writing this article intended for those who are in the same level, or maybe lower, of my technical knowledge. I would be using layman's...
0
2897
hyperpau
by: hyperpau | last post by:
Before anything else, I am not a very technical expert when it comes to VBA coding. I learned most of what I know by the excellent Access/VBA forum from bytes.com (formerly thescripts.com). Ergo, I will be writing this article intended for those who are in the same level, or maybe lower, of my technical knowledge. I would be using layman's...
0
7836
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 effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it. First, let's disable language...
0
8199
Oralloy
by: Oralloy | last post by:
Hello folks, I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>". The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed. This is as boiled down as I can make it. ...
0
8336
jinu1996
by: jinu1996 | last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that...
1
7950
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 Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For...
0
8212
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 protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the...
1
5710
isladogs
by: isladogs | last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM). In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules. He will explain when you may want to use classes...
0
5389
by: conductexam | last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one. At the time of converting from word file to html my equations which are in the word document file was convert...
0
3863
by: adsilva | last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
1
2343
by: 6302768590 | last post by:
Hai team i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system

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.