Server tag error when passing parameters to javascript from gridview

Question

I have a gridview and need to pass two parameters to a javascript function when pressing a button in the gridview. The script is the following:

<script type="text/javascript">
        function AddItem(name,price) {

            javascript: simpleCart.add('name=' + name, 'price=' + price, 'quantity=1');
        }    
    </script>

In the gridview I tried passing the parameters like this:

<asp:Button ID="AddCartButton" runat="server" Text="Add To Cart" onClick="AddCartButton_Click" OnClientClick="AddItem('<%# Eval("Name") %>', '<%# Eval("Price") %>')" />

But got a 'Server tag is not well formed error'.

I also tried like this:

<asp:Button ID="AddCartButton" runat="server" Text="Add To Cart" onClick="AddCartButton_Click" OnClientClick='<%# Eval("Name","Price", "return AddItem({0},{1})") %>'  />

But the Eval function only seems to allow the passing of 1 parameter.

IUnknown · Accepted Answer · 2011-12-08 11:12:33Z

2

<asp:Button ID="AddCartButton" runat="server" Text="Add To Cart" onClick="AddCartButton_Click" 
     OnClientClick='<%# Eval("Name", "AddItem(\"{0}\", ").ToString() + Eval("Price", "\"{0}\")").ToString() %>' />

answered Dec 8, 2011 at 11:12

IUnknown

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3 Comments

Matt Over a year ago

It works! Thank you very much, been stuck forever! Do you mind explaining why yours worked when the others didn't? Thanks again

IUnknown Over a year ago

It's works because each single quote disorientate markup parser. Except this one, expression evaluated practically the same way as regular C# expression.

Simon Halsey Over a year ago

That's what I was getting at.

Simon Halsey · Accepted Answer · 2011-12-08 10:58:00Z

1

Try changing it to this:

<asp:Button ID="AddCartButton" runat="server" Text="Add To Cart" onClick="AddCartButton_Click" OnClientClick='<%# "AddItem('" + Eval("Name") + "', '" + Eval("Price") + "')"' />

or this also might work

<asp:Button ID="AddCartButton" runat="server" Text="Add To Cart" onClick="AddCartButton_Click" OnClientClick="AddItem('<%# Eval(&quot;Name&quot;) %>', '<%# Eval(&quot;Price&quot;) %>')" />

using quotes inside a server control attributes upsets the compilation process as it can't figure out where the attribute ends. You can either use apostrophes (1st example) or escape the quotes (2nd example)

answered Dec 8, 2011 at 10:58

Simon Halsey

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1 Comment

Matt Over a year ago

The first solution still gives me a server tag error (I'm assuming there was a mistake at the end and changed it to )"%>' ) The second one doesn't work either, it passes <%# Eval("Name")%> as a parameter :/

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