Attribute must be enclosed in quotation marks

Question

When trying to build the solution, I am getting a warning, Attribute must be enclosed in quotation marks. How do I enclose the CommandArgument attribute in quotes ?

<asp:LinkButton Runat="server" ID="lkAcknowledge" Visible="false" CommandName="Acknowledge" CommandArgument=<%# DataBinder.Eval(Container.DataItem, "AssignmentID")%> >Acknowledge</asp:LinkButton>

Answer 1

Use single quotes:

<asp:LinkButton Runat="server" ID="lkAcknowledge" Visible="false" CommandName="Acknowledge" CommandArgument='<%# DataBinder.Eval(Container.DataItem, "AssignmentID")%>'>Acknowledge</asp:LinkButton>

Answer 2

Use single quotes:

CommandArgument='<%# DataBinder.Eval(Container.DataItem, "AssignmentID")%>'

Note you can also use the shorthand Eval since ASP.NET 2.0 to get rid of some of the noise:

CommandArgument='<%#Eval("AssignmentID")%>'