How to bind without reflection (EVAL) in GridView?

[progman417]

Hello,

In ASP.Net 3.5 unleashed, it states that EVAL is inefficient in template columns as it uses reflection (30% less efficient I read on one blog).

Their suggested alternative is the following syntax:

replace: Eval("Title")

with: ((System.Data.D ataRowView)Cont ainer.DataItem)["Title"]

Looks simple enough, but it barfs with:

"Unable to cast object of type System.Data.Com mon.DataRecordI nternal to type System.Data.Dat aRowView"

(I tried to cast it to DataRecordInter nal but it is a protected class).

I've hunted high and low via Google, but to no avail.

Anyone know where it's going wrong?

(btw I'm using c#)

[jw3970]

You are probably binding with a DataReader. Try casting to a System.Data.Com mon.DbDataRecor d

You will also need to change the way that you access the "Title" field.

For example:
((System.Data.C ommon.DbDataRec ord)Container.D ataItem).GetStr ing(1)

Where 1 == Column ordinal for "Title"

See http://dynamicreflecti ons.blogspot.co m/2007_12_01_arch ive.html