I use an asp Login control with WebControlCaptcha as shown in the above code. The problem is that the captcha control always returns false when UserValidated method is called. I tried to use captcha control on another webpage without the login control it works.
protected void Login1_Authenticate(object sender, AuthenticateEventArgs e)
I can't seem to get any sort of validator to fire when validating my DropDownList. I just want to make sure that it isn't left at "--Select--" when the user presses the Add button on the page. I've tried a range validator and required field validator and neither seem to fire at all. My DropDownList contains ID which is an int that is hidden and Name which is a string that is displayed. The ID is -1 for "--Select--". I use these all the time and can't understand why the page in this new solution is any different from other solutions I have done in the past. What have I missed?
View 18 RepliesI have 2 text boxes one for first name and one for last name. If the user enters a first name then the last name cannot be empty. Is there a validation control i can use and how can i display the message in the validation summary.
View 5 RepliesWe are developing an Intranet application that looks up some data for a user through hooks into Active Directory. However, our Network guys don't always enter in a users email address when creating a new user. Therefore, our user database is missing the email address for over half of our users. We have over 10,000 users, therefore asking them to enter 5000+ email addresses into each missing email address field in Active Directory isn't an option. I already know how to validate that an email address is correctly formatted using Regex. What I need is a way to lookup the email address entered in the email address textbox and see if it exists on Outlook/Exchange (or looking up the email address using the First Name/LastName would work). If it does exist then the address is valid, if it is invalid then the user typed in the wrong address. I've tried to do something with CDO, but have had no luck. We use Outlook 2003 and ASP.NET 2.0.
View 4 RepliesI have a textbox that is set to readonly so users won't try to type something in it. It is then populated when a treenode is clicked. I want to validate what is in the box after it's populated from the treenode click but if i have it set to readonly, in the codebehind it shows up as an empty string. if i take the readonly off it shows up populated. what would you do about this?
View 4 RepliesI have several fields for my custom form, When i create new Validator for that textbox1, it mess up with the alignment of my fields and takes the text or the texbox to another place. I tried absolute positioning, but when i run the page i see that the validator text showin in the wrong place, What should i do to keep the layout of my page beautiful while i using validations for each field in my form?
View 6 RepliesI am designing a validation form which has a textfiled for inserting Employee ID and a submit button for parsing inserted value. On clicking that button the SubmitButton_Click() validate the inserted value against SQL Server database. The database has a table name EMPLOYEE containing ID and Name of employees. Now I have designed the .aspx page but stuck in the rest of the job.
View 6 RepliesI want to validate zip codes that belongs to most of country like USA,UK,Australia,India etc.....
View 3 RepliesI have 2 textboxes in my page. One is supposed to hold the Date and the other Time. These 2 data are merged when saving into one database field having a datetime datatype. Upon retrieve, the datetime field value is split into 2 and put into the Date Textbox and Time TextBox.
Upon input, when I am trying to update, the validator always says "Invalid Time."
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I have a textbox field that I want to validate and make sure if they enter a value it is numeric
I was looking at the RegularExpressionValidator control to do it? I noticed you code funny characters
I set the control to validate field to my text box
In the validationExpression what do I put to tesdt if field is numeric?
they can enter say 99 or 85.76 etc..
I want to validate a textbox that only a numeric currency value can be put into it, for example 0.00. I thought the following code was correct but it doesnt seem to wrk, its causing an error on my page and when I remove it the page is fine, it doesn't actually give exact details of the error on the page just says "syntax error" in the browser that is all.
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I have a custom html form, I created new asp.net site in the web developer 2008.
My question is, When i create a validating for this textbox and run the page, it tells me error, i tried to make the validating control id and (control to) same as name and id of my textbox but all didn't not work out?
Is it possible to validate a date format when you use a form view to enter the record into the database? I have a form view that is used to sign out for the day or week. I need to dates to be in mm/dd/yyyy format. Is there someway to use the validation controls so that it won't let you enter the record unless it is correct and will prompt them to enter the right info.
View 1 RepliesI am trying to validate a textbox in C# to see if it is null before submitting but it still allows me to submit and does not give the warning message. here is my code
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how to check the domain name of an email address...
i.e
in 4@4.com
validating 4(second one-domain) should return false if the domain is not exist again
if 4(first one) is not a valid user then also return false
i want to validate dropdownlist which is bound to objectdatasource. i am using following code but the listitem <asp:ListItem Value="-1">Select</asp:ListItem> doesnot appear. it shows only items that are stored in database. please help me how can i validate this dropdownlist.
<asp:DropDownList id="drpdwnFID" CausesValidation="true" runat="server" DataSourceID="objDtsrcForums" DataTextField="Title" DataValueField="ForumID" >
<asp:ListItem Value="-1">Select</asp:ListItem>
</asp:DropDownList>
<asp:RequiredFieldValidator ID="rqrValidDropDwn" InitialValue="-1" ErrorMessage="Select Forum" runat="server" ValidationGroup="submit" ControlToValidate="drpdwnFID" Display="None"></asp:RequiredFieldValidator>
I'm adding RequiredField validators to a group of RadioButtonList controls, and something strange is happening when the page loads. The page renders just fine with no validators tripped, but as soon as I click on one of the radio buttons, the validator for that RadioButtonList fires and shows me the error message. I initially thought that maybe the various validators were cross-linked, so I tried clicking on a radio button in every list, but they all react the same. Here's the code that generates the whole thing:
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I have a situation where a page fails validation if a Gridview on the page contains no datarows.
The rest of the page validates using a validation summary. I'd ideally like the failed validation message to be passed on to the validation summary.
I'm creating an quiz application which queries the database and extracts the questions and choices. I use dynamically created controls such as a checkbox list and fill the values dynamically. How do I do this? Right now I have these functions:
array_random_init(); this creates a 10 element integer array from 1-20
- extract_question(i): this extracts a question indexed at i in DB, I created the controls and set the appropriate text in this function.
- validate_question(i); this is called by button_click and validates the question i according to DB.
I understand I have to recreate the controls in Page_init on postback, but what should it look like? Do I need to add "if IsPostBack" in page_init, or do I create the controls in page_init() and reset their properties in page_load when I use extract_question(i)? Also, I cannot seem to clear the selected boxes on postback, I added page directive enableviewstate=false" but it doesn't work. What's the right way to do it?
I have a web app that has two listboxes on the page. The first listbox has selection items that can be chosen and moved over with back and forward buttons to the destination listbox.
I can't figure out how to validate the destination listbox for empty items on a postback. I have tried to use a custom validator, but I can't get the validator to fire unless I actually select one of the items with the mouse.
I'm trying to make sure a user selects a date in the calendar by checking for it with OnItemInserting command...since I can't just use a validation control. what I need to adjust in this code behind to cancel the request and activate the label when no date is selected? Apparently looking for an empty or null value won't work...
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multiple email address are enetered in the textbox at present i have used SPLIT function to split the emails based on a delimiter on server side wht i need is , suppose i have 10 email addrees in the textbox and suppose 3rd one is not valid i dont want the processing to be stopped at 3rd , if 3rd is invalid it shld be skipped and the 4th one shld be processed.
View 10 RepliesI have created the user control and it has got one table with few rows in it. One row has got a text box with custom validaor and other row will have check boxes dynamically added through server side.
On the main page, i am loading that user control about 10-15 times depending upon the values from the database.
Is there any way of setting the properties of user control validator on the main page? Text box will only be validated if any check box is checked in the user control.
I am also not able to find the usercontrols through the main page.
I need to validate that a user makes a selection from a select list OR they enter text into a textbox. I'm trying to figure out which validator to use. Is there a way to make a CompareValidator do this? Or would I need to write a custom validator? If custom, do I write one for each of the form elements, or does the validation happen upon submit?
View 3 RepliesI'm experimenting with validating forms in the asp.net MVC framework. I'm focusing on server side validation for the time being. I've come across an error that I'm not sure how to rectify. System.NullReferenceException: Object reference not set to an instance of an object. The code that throws the error is:
[AcceptVerbs(HttpVerbs.Post)]
public ActionResult Create([Bind(Exclude="ID")] MembersCreate mc )
{
mc.Modules = ModuleListDataContext.GetModuleList();
ViewData.Model = mc;
//Validation using ModelState
//
//
//line below errors when form field is empty
//
if ((string)mc.Member.Username.Trim() == "")
ModelState.AddModelError("Member.Username", "Username is required.");
if (!ModelState.IsValid)
return View();
try
{
// TODO: Add insert logic here
return RedirectToAction("Index","Home");
}
catch
{
return View();
}
}
When I put spaces in the field it performs exactly as i want, but if I leave the field blank and press submit I get the error. What's the best way to avoid this error and still validate blank form fields?