Passing a serverside variable to a javascript function in asp.net

Question

I need to pass a server side variable to my javascript function such as below:

<asp:HyperLink ID="lnkIDNum" runat="server" NavigateUrl="javascript:ChangeLocView('ChangeView', '<%#Container.DataItem("IDNum")%>')"><%#Container.DataItem("IDNum")%></asp:HyperLink>

I get an error at the serverside variable being passed into the Javascript function.

Parser Error Message: The server tag is not well formed.

Can anyone assist?

Have you tried using Eval() isntead of Container.DataItem? This link is is some kind of databound control, right? — James Johnson
– James Johnson, Commented Aug 25, 2011 at 16:14

Mrchief · Accepted Answer · 2011-08-25 16:26:10Z

2

Got it working like this:

<asp:HyperLink ID="lnkIDNum" 
           runat="server" 
           NavigateUrl=<%# "javascript:ChangeLoc('ChangeView', '" + Container.DataItem("IDNum") + "')" %>>
     <%#Container.DataItem("IDNum")%>
</asp:HyperLink>

edited Aug 25, 2011 at 16:26

answered Aug 25, 2011 at 15:56

Mrchief

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3 Comments

DNR Over a year ago

When I use your code, I get "Exception Details: System.FormatException: Input string was not in a correct format."

Mrchief Over a year ago

Are you sure its caused the NavigateUrl? Try this: Container.DataItem("IDNum").ToString() in the NavigateUrl assignment.

DNR Over a year ago

I do believe we have a winner !!.. Thanks @Mrchief

James Johnson · Accepted Answer · 2011-08-25 16:21:19Z

1

Try using the Eval() function instead, and do something like this:

<asp:HyperLink ID="lnkEdit" runat="server" NavigateUrl="someFunc('ChangeView', '<%#Eval("SomeColumn")%>');"><%#Eval("SomeColumn")%></asp:HyperLink>

answered Aug 25, 2011 at 16:21

James Johnson

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2 Comments

DNR Over a year ago

Even with the Eval function, same message

James Johnson Over a year ago

There's something else wrong with your code then. This shouldn't produce any errors.

Johnny5 · Accepted Answer · 2011-08-25 17:14:31Z

1

You probably should set the attributes in the code behind.

string idNum = Container.DataItem("IDNum");
lnkIDNum.NavigateUrl = 
    "javascript:ChangeLocView ('ChangeView', '" 
  + idNum 
  + "'";
lnkIDNum.Text = idNum;

and in the aspx:

<asp:HyperLink ID="lnkIDNum" runat="server"></asp:HyperLink>

edited Aug 25, 2011 at 17:14

answered Aug 25, 2011 at 16:00

Johnny5

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