what is the javascript for dropdownlist..

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I am inserting drodownlist Value into gridview...but once its inserted,i dont want to inser it again that value...for that validation what will be the javascript.

Posted 21-Dec-12 19:55pm

ujali

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Sandeep Mewara · Answer 1 · 2012-12-21T23:34:00

Solution 2

You have to write your own logic for insertion feature. You have to keep track of all the values so far used and based on it avoid the selection of that item from dropdown. Alternatively, once a particular dropdown value is selected, you can remove the same from the list so that it is no more available for user selection.

Posted 21-Dec-12 23:34pm

Sandeep Mewara

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ujali 22-Dec-12 5:50am

i want to give a validation to that dropsownlist that Item is already exists??i have write my own logic for insertion

Sandeep Mewara 22-Dec-12 5:54am

As said, you need to write validation on your own. either store used value or use XMLHttpRequest to get the used values and then validate if the selected value is ok to be inserted or not.

ujali 22-Dec-12 5:59am

can u give me the sample javascript code for this?

Sandeep Mewara 22-Dec-12 6:04am

There is nothing to sample out here. Define a XHR and get back the values used. Use a for loop to see if the selected value is already in the returned XHR response. If not, go ahead with selection or else give an alert that it is already selected.

ujali 22-Dec-12 6:14am

how to take values by using Xmlhttprequest...Syntax?

Sandeep Mewara 22-Dec-12 6:20am

Have a look here:http://www.codeproject.com/Answers/121108/SQL-With-Javascript.aspx#answer2

sohal6789 · Answer 2 · 2012-12-21T22:59:00

Solution 1

https://www.dougv.com/2009/02/07/revisited-adding-non-selectable-listitem-controls-to-an-aspnet-databound-list-control/

Posted 21-Dec-12 22:59pm

sohal6789

Updated 21-Dec-12 23:00pm

v2