Passing JavaScript parameters through ASP.NET ListView

Question

I'm trying to pass parameters to a JavaScript function from a link button in a ListView the function only alerts the the passed parameters so I used Eval("Value") as my parameter but it seems that I'm making a mistake.

My code for passing the parameter is

<asp:LinkButton ID="LinkButton1" runat="server" OnClientClick="hello(<%#string.Concat(Eval("Longitude"),",",Eval("Latitude")) %>);">LinkButton</asp:LinkButton>

and the alert function is very simple

 function hello(x){
    alert(x);
}

and the server tag is still not well formed. Any ideas?

sshow · Accepted Answer · 2011-12-29 02:19:59Z

0

You should use single-quotes ' instead of double-quotes " when a property contains server-code.

<asp:Label ID="label1" runat="server" OnClientClick='<%#Eval("Foo")%>' />

edited Dec 29, 2011 at 2:19

answered Dec 29, 2011 at 2:13

sshow

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4 Comments

sshow Over a year ago

@Islam also try to surround the parameters for the JavaScript-function with quotes: hello("<%#Eval("")%>"). You should really use a JavaScript-console to debug. At least check the source of the page to make sure the HTML is well formed.

Islam Over a year ago

I'm sure that the HTML isn't well formed, but I cannot figure the problem so I posted my code to discuss it.

sshow Over a year ago

@Islam If the code compiles, you should be able to find the problem through a JavaScript-console.

Islam Over a year ago

It is fine, the solution is here stackoverflow.com/questions/249926/…

Nick At Night · Accepted Answer · 2011-12-29 17:21:25Z

0

Your code should work, but, it looks like the binding mechanism is confused. I have struggled with this before and came up with the following work-around.

Add a method to your code behind page.

protected string CreateJavascriptCall(object longitude, object latitude) { return String.Format("hello({0},{1});return false;", longitude, latitude); }
Change your aspx page code to:

asp:LinkButton ID="LinkButton1" runat="server" OnClientClick='<%#CreateJavascriptCall(Eval("Longitude"), Eval("Latitude"))%>'>LinkButton

answered Dec 29, 2011 at 17:21

Nick At Night

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