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JQuery with dynamic ASP.NET controls (DropDownList)

Posted By:      Posted Date: September 10, 2010    Points: 0   Category :ASP.Net
I am mixing JQuery with ASP.NET webforms.  Adding dynamic controls and accessing the selected values with JQuery works differently under different circumstances and I am trying to establish the difference. Why does Senario 1 work in debug mode but not without breakpoints?  What does databinding to a GridView do that adding DropDownList controls to a asp:panel does not? Is there some sort of DOM registration going on in DataBind? All senarios use the same JQuery: var ddlCollection = $("select[name$='ddlDynamicDropDown']") Senario 1: Breakpoints on each line (Success) Add DropDownList controls to a asp:panel dynamically in the PageLoad method (Does the page lifecycle matter? OnLoad method instead?). Run the code Select values and click on a button firing a JavaScript function (Break in Debug) Break in JavaScript file Access the dropdowns and their selected values successfully Senario 2:  Run the Senario 1 code without breakpoints (Fails to locate the ddlCollection) Senario 3: Use a GridView (Success) Add values to populate the DropDownList controls to a Generic List. Bind the values to a GridView control containing the DropDownList controls Run the code Select values and click on a button firing a JavaScript function Use JQuery to Access the dropdowns and their selected values successfully.  

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