Linkbutton with Eval Listview Asp.net

Question

I want to do this

<%# Eval("campo1").ToString() == "nada consta" ? "nada consta" : Eval("campo1")%>         

within the linkButton

<asp:LinkButton ID="LinkButton1" runat="server" PostBackUrl= '<%# 
"~/Promocao.aspx?ID="+Eval("campo2") + 
Eval("campo3")%>'>...+infos</asp:LinkButton>

That is, if there is data in "field1", it displays the data. Otherwise it displays "nothing is". And, having data, when clicking on linkButton passes to another page "promocao.aspx" the field2 and field3. The way it is, next to each other, even without data in "field1" Linkbutton is available for click. Besides, the way it is, in the URL the field2 and field3 are together.

Answer 1

You can use the property Visible of Linkbutton to criticize whether or not it will be present, example:

<asp:ListView ID="ListView1" runat="server">
    <ItemTemplate>                    
        <div>                        
            <asp:LinkButton ID="LinkButton1" 
                PostBackUrl='<%#string.Format("~/Promocao.aspx?id={0}&id1={1}", Eval("campo2"),Eval("campo3"))%>' 
                runat="server" 
                Visible='<%#Eval("campo1").ToString()!="nada consta"%>'>
                    Item
            </asp:LinkButton>    
            <asp:Literal 
                ID="Literal1"
                runat="server"
                Text='<%#Eval("campo1").ToString()=="nada consta"?"nada consta":""%>'>
            </asp:Literal>                    
        </div>
    </ItemTemplate>
</asp:ListView>

and in the PostBackUrl create the desired options to redeem on your configuration page.

_{References Linkbutton Web Server Control}