Web Forms :: How To Validate Input Text Depending On Selected Value From Dropdown
Apr 12, 2010
I have 1 drop down, 1 text field and 1 command button i.e. "Search". Dropdown contrains following values
Type1
Type2
Type3
In textbox user will enter numeric or alphanumeric value
Here I want to check if 'Type1' is selected so user can enter only numeric value between 1000 and 2000, otherwise display some message "Entered value is not valid for "Type1". I want to display this message thru required validator error message property
If user select 'Type1' and 'Type2' then user can enter any alphanumeric value other than 1000-2000 numeric range.
I want to implement thru Search button or once user leave the textbox after entering value. Here I want to display message.
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Mar 21, 2010
What would be the best way to handle the following scenario? I have an application where depending on what type of proceeding is selected, only certain input fields should be visible.
There are 33 proceeding types and 14 input fields in total
First case, make one big form with all of the fields and have a dropdown with proceeding type which depending on what is selected, makes certain fields visible?
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Nov 13, 2010
I have a .net 3.5 web form with an ajax combo box and a text box inside it. The bombo box is bound to a SqlDataSource.
My requirement is to show/hide the text box depending on the text of the selected item in the combo box. If a particular string, say 'xyz', appears in the text of the selected item, the I will make the text box invisible. I enabled the AutoPostback, made the text box disappear in the SelectedIndexChanged event, and everything worked fine.
However, when users enter their own texts (which are not in the list items), I am unable to show / hide the text box. I've tried the TextChanged event but nothing happens. It seems the event is not trigger after I enter a new text and locate the focus to other place.
is there a way to prevent the user ented text from being inserted into the bombo box?
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Apr 12, 2010
I'm working on an ASP.NET/C# app.
I have 2 text boxes and I need to validate if the input text for both of them are not both null
ex:
if(string.IsNullOrEmpty(TextBox1.Text) && string.IsNullOrEmpty(TextBox2.Text) ) //FAIL!!! else
that is, at least one txtBox has values
I was planning on using a custom validator but it seems that the validation function only gets called when something is written on the textBox i'm using has the 'control to validate'. Now, that doesn't work for me since I want to show an error message when both text boxes are empty. Is there a way to make the validation function to be called with, for example a postback? Or is there any other better approach to this case than the custom validator?
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Dec 30, 2010
I have form with a HTML.DropDownList and a HTML.SubmitButton. I would like to validate item selected in dropdownlist once there is a click in submitbutton. Any ideas?
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Feb 8, 2010
i have a drop down list and a text box, inside a listview row (and this is a repeating layout). i populate each dropdownlist with same contents ( these contents/items come from a custom collection object).
i have added a required field validator in the listview's item template, that has its validation group = the validation group of the drop down list, and validates if the textbox is blank or not. this validation takes place on the selected index changed of the drop downlist for that row.
1. on selected index changed, EACH dropdownlist validates only its corressponding textbox perfectly (which is what i want)
but if i enter some text in one of the textboxes after doing 1, the dropdownlist for THAT particular row, assigns the correct value to the text entered. but for other rows (for which i changed their corresponding ddls to test the required field validation and for which the text boxes are still blank), their ddls by itself assign the values to the blank text without validating.
markup of code for listview is [Code]....
code behind for the ddl selected index changed is [Code]....
method GetIndexFromId retrieves index of the custom object inside a collection depending on the Id (which is a property) of the object.
i notice that the ddl selectedindexchanged is being hit as many number of times as many rows i change (i.e as many ddls in different rows i change to check the required field validation)
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Feb 15, 2011
I think this is almost impossible but I would like to ask.
I have a dropdown in my page:
The Name Dropdown is combined with item name / manufacturer name
This is what I want to do:
When a manager select a name, The text on the dropdown change to only item name and read only. (example: 44 inch Side Brushes)
The Manufacturer Textbox automatically retrieves the manufacturer name and read only.
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Jan 1, 2010
I have a dropdown in the mvc application. I need to fetch the selected text of the dropdown. Here is the code
[Code]....
When I fetch the drpEmployee value from the FormCollection, its returns the selectedvalue means Id not Name. How I can fetch the Selected Text from the dropdown ?
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Jan 20, 2012
I am trying to get the selected text of a cascadingdropdown control. I search over web but with no luck.
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Feb 5, 2011
trying to restrict the "Administrator" from deleting the product when the product is still "Available" or "unsold".When a user buys the product the status will become "Sold", and when the product is not sold, the status will be "unsold". i want to do a validation where there will be a prompt when the administrator tries to delete the product that is "Available" or "unsold".
I've tried many ways by using OnItemDeleting to create the prompt, but it didn't seem to work together with OnItemDeleted. The record will remain in the database even when deleted or there the prompt is not working. Please tell me how do i go about doing the OnItemDeleting when the status changes. Or is my method wrong.
This is my code for the DetailsView
[Code]....
This is my code for the OnitemDeleted
[Code]....
I have tried to validate using OnitemDeleting together with OnItemDeleted(using the previous code above) to restrict the quantity before. But it didn't work.
[Code]....
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Oct 1, 2010
Since I'm new to coding and I'm trying to understand why here is a little more detail on the question.If you have a text box and you are limiting the input to say 2 charactrs do you really need to validate the input further? What I have is a text box that has a max length of 2. Is there a security reason to add a validator to the textbox. I should add this is in Asp.net.
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Mar 2, 2010
i have 3 dropdown list box 3rd dropdown populate depending on 2nd drop down and 2nd drop down populate depnding on 1st value of drop down in asp .NET C#
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May 19, 2010
I have asp.net calender control on my form and I have dropdown for month and year. and one button When I select month and year from dropdown and then when i click Button then I want to be able to go the specified month and year on my calender?
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Apr 8, 2010
I would like to alter the query that is run, depending on the selection made by the user in a drop down list on the same page. Would this best be done using a partial page update (AJAX)? Ideally it would be great to have the textbox result change quickly once the drop-down list value has changed, without a full page postback. I would like to change the SQL query to a completely different query if the user selects an option different to the default (page_load value) in the drop-down list. I would then like the newly retrieved result to be displayed in the textbox as before.
My current VB function looks like this:
[Code]....
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Apr 4, 2010
I have an input...
<input
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runat="server"
type="hidden"
/>
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Nov 1, 2010
I have a textbox called "tax rate" which I need to validate the input... The only thing I need to ensure is that the value entered is a number (decimals ok of course). eg. the input might be "8.75" How do I write the validation expression?
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Dec 24, 2010
How can i make a control required to put input depending on the radiobuttonlist selection? Let me try to clarify a bit more. I got 2 radiobuttons, if one gets selected, nothing else has to be done. But if the otherone gets selected, a textfield must have some input too.
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Mar 11, 2014
I have seen article in code snippet but i have never used web services so that is complicated .
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Sep 3, 2010
I've ready everything I can find on the built-in validators but can't figure out how to do the sort of validation I need on theclient-side (I can do it on the server-side). Business rule I want to enforce (review the gridview snippet below) is if user checks the CheckBox_EditLifeCycleRpt control but doesn't enter a value in the TextBox_LifeExpectancy control then the validation should fail.
[Code]....
Like I said I can get this done on the server-side but thought it would be a good opportunity to learn how to use one of the compare validators. Also (FYI) I'm not too good at authoring Javascript but I can copy/modify other people's code fairly well.
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Sep 1, 2010
I need to validate hours put into a textbox. I want to allow hours to be from 0-24 and allow up to 2 decimal places. so it has to accept
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[code]....
[Code]....
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How to validate dropdown list using javascript?
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