Dynamic read width from SQL, show error message: Cannot convert type 'string' to 'System.Web.UI.WebControls.Unit'

 I wrote new post, here is my code, just simple page show big image with dynamic width and height, but somehow the Width='<%# Eval("GalleryImageWidth")  %>' does not work.

people in here give me some sugestion like : Width='<%# Eval("GalleryImageWidth")  + "px" %>' or  Width='<%# Convert.ToInt32("GalleryImageWidth") %>' or

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