Forms Data Controls :: Use Eval Or Bind In A Databound Control?

Sep 8, 2010

I have a repeater I've databound with a generic arraylist from a LINQ query (.ToList() ) in the code behind.

I was using

<%# Bind("FirstName")%> but noticed
<%# Eval("FirstName")%> works just as well.

Is it better to use Eval or Bind? or does it depend on the situation?

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Forms Data Controls :: Eval(), XPath(), And Bind() Can Only Be Used In The Context Of A Databound Control?

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I have a big problem...I have made a page has a Data FormView controland the insert template of this Formview control has DropDownList to allow the user to choose section (SectionsDDList)..and there's also another DropDownList allow the user to choose a teacher (TeachersDDList)...more infothe SectionsDDList get the section list from SqlDataSource control which the "Select Command" of is:"SELECT section_id,section_id FROM sections"the TeachersDDList get the teachers list from another SqlDataSource control which the "Select Command" of is:"SELECT teacher_id,teacher_name FROM teachers WHERE (section_id = @section_id)"finallyI want the TeachersDDList to be filled with teachers according to the selected section from the SectionsDDList...So,I enable the Auto postBack function of the SectionsDDListand add the next code for the SectionsDDList_SelectedIndexChanged event:TeachersDataSource.SelectParameters["section_id"].DefaultValue = ((DropDownList)sender).SelectedValue;be aware that both of the SectionsDDList & TeachersDDList have been Bounding to a column...and the problem I have faced is that:Exception Details: System.InvalidOperationException: Databinding methods such as Eval(), XPath(), and Bind() can only be used in the context of a databound control.maybe you want to know the Stack Trace:[InvalidOperationException: Databinding methods such as Eval(), XPath(), and Bind() can only be used in the context of a databound control.]

System.Web.UI.Page.GetDataItem() +93
System.Web.UI.TemplateControl.Eval(String expression) +33
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I am getting the following error

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but all I am trying to do is inside a ASP.NET REPEATER Control

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