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Editorial Team
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Asked: 2026-05-14T07:32:15+00:00

Greetings and thank you in advance for the help. I created a user control

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Greetings and thank you in advance for the help. I created a user control in VB.NET that uses a jQuery datepicker. I am at an impasse. The code I have works for one datepicker control on the page but because I can only register the client script once, it will not work for multiple instances/datepickers on the same page. What is the best way to go about initiating the jQuery script for this control so I can use it multiple times on one page? Can I append to ClientScript.RegisterStartupScript? Thanks again.

Dim sJS As String = "$(function() { " & vbCrLf
sJS += " var dates = $('#" & txtDate1.UniqueID
sJS += "').datepicker({" & vbCrLf
sJS += " changeMonth: '" & _bMonthDropDown & "', changeYear: '" & _bMonthDropDown
sJS += "', numberOfMonths: '" & _numberOfMonths
...
sJS += "'}); });" & vbCrLf
Page.ClientScript.RegisterStartupScript(GetType(Page), "DatePicker", sJS, True)
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1 Answer

  1. Editorial Team

    You can make just a minor change to get the behavior you want. Just change this:

    Page.ClientScript.RegisterStartupScript(GetType(Page), "DatePickerVars", sJS, True)

    To have something unique for a key, like this:

    Page.ClientScript.RegisterStartupScript(GetType(Page), "DatePickerVars" + txtDate1.UniqueID, sJS, True)

    That key (combined with the type) is what determines if this script is already registered, which you’d want for example if you had 30 of a user control and only wanted to run a certain script once. In this case though, you want each user control to register the script that’s unique to it, so give it a key that won’t be found as already being registered for this page.

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