[Arrangement] The navigateurl attribute in the Asp.net control is invalid when binding data.

In the Data Control(For example:Grivview, datalist)Used in<Hyperlink>When using<%# Eval ("ID ")%>The bound data is invalid.

Incorrect binding method,CodeAs follows:

< ASP : Gridview ID= "Gvads" Runat= "Server" Autogeneratecolumns= "False" Skinid= "Bluegridview">

<Columns>

<ASP:Templatefield Headertext="Operation">

<Itemtemplate>

Asp : hyperlink id =" hlshow " navigateurl = 'book. aspx? Id = <% # eval ("ID ") %> ' runat =" server "> Delete</ASP:Hyperlink>

</Itemtemplate>

<Itemstyle Horizontalalign= "Center" />

<Headerstyle Horizontalalign= "Center" />

</ASP:Templatefield>

</Columns>

</ ASP : Gridview >

The correct binding method is:

< ASP : Gridview ID= "Gvads" Runat= "Server" Autogeneratecolumns= "False" Skinid= "Bluegridview">

<Columns>

<ASP:Templatefield Headertext="Operation">

<Itemtemplate>

Asp : hyperlink id =" hlshow " navigateurl =' <% #" book_delete.aspx? Id = "+ eval (" ID ") %> ' runat =" server "> Delete</ASP:Hyperlink>

</Itemtemplate>

<Itemstyle Horizontalalign= "Center" />

<Headerstyle Horizontalalign= "Center" />

</ASP:Templatefield>

</Columns>

Asp : gridview >