Web Forms :: How To User Validation Controls With FileUploader
Dec 15, 2010
I have a fileUplaoder control on my form, The file has been uploaded when the user click the button. I wanted to associate a Custom Validator (Or some other validator), that will check
1. File Type (To exclude .exe etc)
2. File size (To restrict user not to upload a file >5MB)
If the above 02 conditions are violated it will stop the user to submit the form and will show the appropriate error messages on the validation summary. (Like the file is larger then the allower size etc etc)
I wanted to use validation summary for this purpose as I am already displaying all validation messages for all controls on the validation summary
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Dec 25, 2010
I am using one datalist control for uploading multiple images.I hv used one Asp:FileUplaod Control and one button in one itemtemplate.I am using reqired field validator and regular expression validator for file upload cntrl I am assigning validation group for both of them on ItemDataBound event of my datalist so that each upload cntrl hv same validaton group as required field and regular expression validator.Now what i want to do is - i want to show my error message in validation summary which is right at the top of the page.I want one know how to write javascript that will assign validation group of my control in datalist on which i click ?
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Jun 18, 2010
After I browsed and selected file to upload using FileUploader control and pressed submit button, I found the textbox built within the Uploader control is blank still.
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Feb 7, 2011
really it's a crucial point for me, my quastion is :
How upload file in remote machine (LAN) using Flajaxian FileUploader.
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Nov 5, 2010
I couldnt help but notice that if you have a FileUpload-control, and then try to upload a file thats bigger(in bytes) then the allowed maxiumsize, then the site crashes or some wierd "Connection problem"-page shows up, atleast for me in Firefox...
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Nov 23, 2010
I am looking for the best way to set the validation group for all of the controls contained in a user control. Most of the controls in the control are created dynamically when the control is loaded. It has quite a few input fields and validators.
I would like to save time by setting the validation for all the controls and validators with some sort of function that could just loop through everything and set it.
It seems though that there is no consistent interface that includes validation group for all of the different controls that have the property.
Should I use reflection to check for Validation group, I know I can do this, but is there a better way?
We are using C# by the way.
EDIT: I put the answer down below for anyone who wants the code.
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Aug 13, 2010
I'm using an AsyncFileUploader and I want to check if the uploaded file is of valid type (e.g. jpg, gif, png, etc...) and if not the AsyncFileUploader should be colored in Red (like ErrorbackColor setting to Red)
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Feb 24, 2011
Is it possible to do client side validation on a detailsview (insert or edit) without using validation controls? I.E. somehow capture the onClientClick event of the autogenerated Insert/Update link buttons to call my javascript function?
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Mar 9, 2011
I have 2 user controls on registered on one aspx page. UserControl1 us having one text box with require field and one submit button.UserControl2 is also having one text box with requirefiled and save button.
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Jan 28, 2011
I have a asp button and a user control containing custom validator in it when i click the button that is present on the page not inside the usercontrol, the user control client side validation occurs and displays the javascript method regarding data entry failure but when i click the javascript alert box ok button, the postback gets occured automatically i want to stop the postback if the user control contains invalid data in iother words the postback get occured only when the user control contains the valid data.
I have already done this type of coding in javascript:
function CheckTimeRangeTo_9(sender, args) {
var e = document.getElementById('<%= ddTimeTableTo_9.ClientID %>');
var totalToTimeInMins = CalculateTotalMinutes(e.options[e.selectedIndex].value);
var totalFromTimeInMins = CalculateTotalMinutes(args.Value);
[Code]...
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Aug 25, 2010
I have a page on this page I have multiple user control and one of the control is on the user control.
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I want the users to login and have the app only display their data on the main page. The login control works perfectly...it displays the data...but it displays ALL of the users records instead of just the user that is logged in. I'm still learning how to use SQL...
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Aug 19, 2010
May i know how i can handle client side validation in user creat wizard on Create user button?
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Nov 19, 2010
Is there anyway to trigger the ValidationSummary before the user hits a button that causes validation?I have a bunch of text boxes with Required and Rregex validators attached, as I type in them and tab out they trigger their errors however the summary doesn't show anything until I hit the Submit button. Any way to have the ValidationSummary update itself in the same way as all other validators?
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Jan 17, 2010
I have a little doubt about creating a login control in the master page within a contentplaceholder.
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[Code]....
So far so good, but now i want to create the logic to do the actual login. In a regular aspx page i'll do it in the cmdlogin click event, but as i'm in the masterpage, i'm not sure if i can do that. I actually tried to do it in the code behind of the masterpage, but it didn't work. What can do?? do i ahve to use the asp.net login control?
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Jul 28, 2010
I have a web page that shows all contacts and its running fine.
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Jun 18, 2010
I have a custom user control with some input fields and a submit button. I need to validate the fields using the jquery validation plugin when the submit button is clicked. (The function of the submit button is to create another custom control which displays the data entered in the above mentioned control)
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Feb 3, 2011
I am using a MultiView control inside a FormView to break my form into more manageable sections for the end-user. I am trying to make it so that each time the Next button is clicked, the entire form is validated and a list of the fields that have not yet been completed show up in the Validation Summary.
I would like my users to be able to continue through the MultiView 'wizard' even if they haven't completed all the fields -- they should be able to come back to them later. But I would like the ValidationSummary to display the fields they've not completed that are required as a reminder of what to come back to if possible.
I've tried playing around with Page.IsValid with no success.
[Code]....
The code-behind for the Next button is as follows:
[Code]....
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Aug 9, 2012
I use validation control in my page when users click on button if they don't enter data in textboxs it show massage in validation control
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Oct 26, 2010
I have a checkbox on my page that must be ticked and to validate it I am using a custom method as below. The problem is that I now put the checkbox and method within a Create User Wizard custom tempalte and when I submit the form it does not activate the validation check. If I put a normal button on the page outside the tempalte it works. Not sure If I a missing something. Perhaps I can activate it in Created User Event handler in code behind. All Button in my create user Event.
<asp:Button
ID="StepNextButton"
runat="server"
CommandName="MoveNext"
OnClientClick="ShowMP();"
align="middle"
CausesValidation="True"
Text="Submit
my Profile"
/>
aspx
<asp:CheckBox ID="Terms" runat="server" />
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Javascript
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function ValidateTandCs(source, args)
{
args.IsValid = document.getElementById('<%= Terms.ClientID %>').checked;
}
</script>
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Feb 23, 2010
I am using ASP.NET's server-side validation. In the page_load event I'm calling Page.Validate(), and if Page.IsValid is not true I'm then polling the controls to figure out which ones are not valid, and then determining what actions to take.It would be much easier if each control would raise an event as validation fails, allowing me to take action for that particular control. I'm very much a naive programmer when it comes to validation, but is there a way to extend these controls so that a validation error raises an event?
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Jan 19, 2011
I need to perform a validation to check whether a TextBox value is empty on Dropown list selected Index change using validation controls in asp.net
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Mar 16, 2011
Let's say that I have the following HTML for a text box on an ASP.NET page:
<div class="myClass">
<asp:TextBox ID="txtMyTextBox" runat="server"></asp:TextBox>
</div>
It is easy enough to add a required field validator to this page like this.
<asp:RequiredFieldValidator ID="valMyTextBox" runat="server" ControlToValidate="txtMyTextBox" ErrorMessage="My Text Box is required."></asp:RequiredFieldValidator>
But I need to modify the HTML slightly if this text box fails validation. I need to add a CSS class to the DIV. So if the user leaves this field blank I need the HTML to look like this:
<div class="myClass error">
<asp:TextBox ID="txtMyTextBox" runat="server"></asp:TextBox>
</div>
Is this possible? I can't figure out if there is a way to write code behind that only fires if this particular validator control fails validation or something. I know I can write code that runs when the entire page is not valid. But I just want this code to run when this validator returns invalid. Hope this makes sense.
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