I have a text box that among other requirements, it is not allowed to be Null.
I setup my validation through a CustomValidator, but the event wont fire when the Value is Null. everything else works fine
Here is a simplified version of my customvalidator
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I've got a drop-down where the user selects a Country. It is a required "field".Next to it, there is a textfield named State. If the user selects US, then the field State is required. If the user selects e.g. Sweden, the State is not required, since Sweden has no states.Example code:
<asp:DropDownList runat="server" ID="Country"></asp:DropDownList>
<asp:RequiredFieldValidator ControlToValidate="Country"
runat="server" Display="Static" ErrorMessage="Required field" />
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I'm sure I'm missing something extremely obvious here, but at this point I can't see it so I need the help.Anyway, I've got a repeater inside of an UpdatePanel. As of right now, I've stripped it down to this, just to try and isolate the problem:
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Whether I add the handler during itemdatabound or I add the handler within the repeater itself, it doesn't seem to matter...the event itself doesn't fire. The AutoPostback itself seems to fire, but the event itself doesn't.
I'm running VS 2008 and .NET 3.5 SP1.
I want to implement hit tracking in an HttpModule in my ASP.NET app. Pretty simple, I thought. However, the BeginRequest event of my HttpModule is firing twice for each page hit. The site is very simple right now...no security, just a bit of database work. Should log one row per page hit. Why is this event firing twice?
Moreover, IHttpModule.BeginRequest actually fires a different number of times for the first page hit when running for the first time (from a closed web browser)...3 times when I'm hitting the DB to provide dynamic data for the page, and only 1 time for pages where the DB isn't hit. It fires 2 times for every page hit after the first one, regardless of whether or not I'm touching the DB.
It's interesting to note that Application_BeginRequest (in Global.asax) is always firing only once.
how am I be able to display a text into a customvalidator control, say for example an asterisk symbol (*) for a new entry. If in case that, the inputted value is invalid then, I will place proper prompt text.
View 2 RepliesMy web page uses a number of custom validation controls to check that values have been selected in DropDownList controls. I have written simple Client side scripts and also server side, but the validation control never gets fired. I am performing validation using a button-click that has CausesValidation set to true.
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I have two CustomValidators, both of which function in the same way (call a query and check if a particular value is available in the DB), the only difference is the query itself.
Rather than writing the same function definition in the code-behind, I would like to find a way to execute a particular query depending on which CustomValidator called the function (I guess using the CustomValidator's ID) so if I have the follwing:
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How can I check in the code behind , which validator called the function "Check"??
i have this ValidationExpression="(d{1,}.{0,2} .{2,})|(.{2,} d{1,}.{0,2})" used in regularexpression validator. I want to use the same one in a customvalidator. But customvalidator does not have option validationexpression. how can i add this in code or in tag.
View 1 RepliesHow can I create a CustomValidator on Client Side for validating my file path from FileUpload?
View 1 RepliesI am working with a page that has a series of checkboxes that at least one box must be checked.
The validator fires when I click the submit button and if no checkboxes are checked indicates the validation has failed. However If I check one of the checkboxes the validation message does not go away until I click the submit button again.
If I was using this on a control in which I had specified the ControlToValidate and I fixed the validation issue the error message goes away immediately.
However in this case I am not setting the ControlToValidate due to the neeed to validate serveral independent controls.
So my question is can I cause a re-validation of the custom validator? For instance I would like to add on each checkbox a onclick="revalidate()" that would then force the validation to happen again.
Here is some sample code that I wrote to demonstrate the scenario.
<script type="text/javascript">
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
function IsOneCheckboxChecked(sender, args) {
if (!$('[id$=checkBox1]').attr('checked') &&
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I am clicking one linkbutton to check the validators clientside in the panels. This works well in IE, but not in Firefox. When I click the button, it does not even hit the validateLength function
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Sample code below. Either I am doing something wrong or missing something in 4.0.
1: The function CheckText fires upon button click in IE but not in FF.
2: The function CheckText fires upon button click in IE /FF when the site runs under 2.0 or 3.5.
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I found this article [URL] on how to create a customvalidator for the checkboxlist. Followed all the way thru, but when i load my page i get the following error, how can it exist in 2 places? How can i resolve this to use the validation on the page?
Compiler Error Message: CS0433: The type 'CustomValidators.RequiredFieldValidatorForCheckBoxLists' exists in both 'c:WINDOWSMicrosoft.NETFrameworkv2.0.50727Temporary ASP.NET Files
oot294f506e54827e67assemblydl3b4b5a368e15533_8dcfca01RequiredFieldValidatorForCheckBoxLists.DLL'and 'c:WINDOWSMicrosoft.NETFrameworkv2.0.50727Temporary ASP.NET Files oot294f506e54827e67App_Code.5yh9snf-.dll'
VWD 2008 Express. Visual Basic.
I have placed a customvalidator in my listview control in the InsertItemTemplate. I want to make a check before the insert is done and set the validator to false if the test fails. I placed the code to check this in a click event routine that fires when the "Insert" button is clicked. When the code tries do a FindControl for any controls in the ListView, I get an error saying, "Object reference not set to an instance of an object."
Here is the code:
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I have a custom validator which validates three text boxes. my code is,
View 4 RepliesHow can I set an error message in a CustomValidator and show this with the ValidationSummary after the submit with JavaScript.Thus, I want to trigger the Customvalidator with Javascript.
View 3 Replies<asp:TextBox runat="server" ID="Accountname" />
<asp:CustomValidator runat="server" ControlToValidate="Accountname" OnServerValidate="Accountname_CheckUnique" meta:resourcekey="ACCOUNTNAME_UNAVAILABLE" />
protected void Accountname_CheckUnique(object source, ServerValidateEventArgs arguments)
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I try to use CustomValidator ClientValidationFunction. The issue I have is CallBack using Asynchronous call which make it difficult to detect when the call is complete.
var callbackresult;
function ValidateSomething(src, args)
{
MyCallBackMethod(param); How shall I check when the call back is complete??? Any workaround?
if(callbackresult == 'true')
args.IsValid = true;
else
args.IsValid = false;
}
function CallBackRef(result, context)
{
callbackresult = result;
}
I want to use CustomValidator for CheckBoxList web control. I tried the code found on:[URL]
But it is not working for me. Nothing happens. No error.
My code (based on the provided link) is as follows:
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But it doesn't execute client side CheckItem2 method.
Does anyone know how to make CustomValidator work with controls which are in DetailsView for example ahen updating item
CustomValidator doesnt work on controls which are in detailsView after performin for example update on that detailsView. For example RequiredFiledValidator works with no problem while CustomValidator has problems (Validation doesnt occur):/
how can i make dynamice fileupload and customvalidator on my page where customvalidator have some type of file for example xls,ppt just;
in onther word when user select file where it not in ajenda must customvaliator work else nothing do
VWD 2008 Express. Visual Basic.I have a customvalidator on my page and a corresponding OnServerValidate routine tied to this control in my VB code behind. I also have a "Save" button that is defined as "CausesValidation=True." I placed a breakpoint in my OnServerValidate code for the customvalidator and a breakpoint in my OnClick routine for the Save button. What I expect to happen is that when the "Save" button is pressed, all the validation is checked before ever entering the OnClick code for the Save button. If any of the validators are false, then I expect that the Save button OnClick code will not run.
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I am trying to figure out how to use Validation on Business Objects. Until now I have only seen examples on CustomValidator that checks for only 1 error. I have two fields with DateTime input that should check for 3 or more errors. I guess normally I should check on client, then on server, last on database level. If I get an error on a field, I should not be able to leave the field. On the Client Validation this is not an error that should cause an Exception since its only a user error. But if something goes wrong and the user bypass the Client Validation, the Server Validation should kick an Exception. And last, if i have other e.g. Batch Update work then they should use the Database Validation code.
`dateFrom` is not empty. (But `dateTo`can be empty)
`dateFrom` is earlier than `dateTo`
`dateFrom` and `dateTo` is within constant `MinDate` and `MaxDate`
So How should my Validation look like, Client, Server and Database?
Thoughts: Should the validation logic be separated on 3 different places; UI, Code and DataObject(Database)? When it is the exact same code? Seems redundant? Can I use the same validation method for all three checks? Or do I need to implement 3 code-chunks, and 3 Methods for each, and then how do I list all in the ValidationSummary nicely?
I've got a UserControl that is essentially just a TextBox with optional built-in validators to it. At the moment this is just a RequiredFieldValidator and RegexValidator. It's easy to just expose properties on the UserControl which get passed through to these validators and allow me to set the RegEx for example.
Now I'd like to add a CustomValidator and allow the user to add a server-side validation function... and this is causing me some trouble. What is the proper syntax for this? I tried just adding a ServerValidateEventHandler property, but when I try to use this I get a runtime error:
Cannot create an object of type 'System.Web.UI.WebControls.ServerValidateEventHandler' from its string representation 'valState_ServerValidate' for the 'ServerValidate' property.
Do I need to expose a delegate in some other way? This should be easy... I'm missing one little key. I'm trying to add a CustomValidator to a page which uses the UserControl... I want the user to specify a handler for custom validation on the usercontrol itself. (yes, it's a bit of a Frankencontrol)
On a web page, I use field validator controls and I have included also a validationsummary control. So far so good, I get the messages in english and greek language. For some cases I want validationsummary control display some custom messages. I use the code below:
Code:
Dim txtcompVldr As New CustomValidator()
txtcompVldr.IsValid = False
txtcompVldr.ErrorMessage = "O ταχυδρομικός κώδικας δεν είναι έγκυρος."
Me.Page.Controls.Add(txtcompVldr)
The problem is than I dont get back the messages for greek language in a format that can be read and I cant find out what causes this behaviour. I wanna mention that all this happening in a free web host server where I am developing it.