(AKA, the DataFormatString="{0:M-dd-yyyy}" Problem)
A very common desire is to set a column of a GridView to display just the month, day and year of a DateTime type. The problem is the by default, the HtmlEncode property of the BoundField attribute ( <asp:BoundField …) is set to True. The reason for this (as pointed out in the documentation of this attribute) is that this helps prevent cross-site scripting attacks and malicious content from being displayed. Microsoft recommends that the HtmlEncode attribute be enabled whenever possible.
