Question

I am applying the following onclick event to a vb.net button in the server side code. I need the query string to contain the content of the products data attribute that I am assigning to btnGenerate.

I am getting the error in my Title when I click btnGenerate, I think it has something to do with my use of various quotation marks.

Changing the single apostrophes around #btnGenerate and products to double quotation marks results in the text: “$(“#btnGenerate”).data(“products”);” appearing in my query string instead of the values it should be retrieving.

Me.btnGenerate.Attributes.Add( _
    "onclick", _
    "return OpenPrinterFriendly('DespatchLabel.aspx?salesordernumber=" & _
    e.CommandArgument.ToString & " &newprocessdate=" & hdnNewProcessDate.Value & _
    "&products=$('#btnGenerate').data('products');')")

Answer 1

You need to escape your single quotes within the string with \ character:

Me.btnGenerate.Attributes.Add("onclick", 
    "return OpenPrinterFriendly('DespatchLabel.aspx?salesordernumber=" & _
    e.CommandArgument.ToString & "&newprocessdate=" & hdnNewProcessDate.Value & _
    "&products=$(\'#btnGenerate\').data(\'products\');')")

---

Edit:

For retrieving the values using jQuery, you need to have this (similar to Konrad‘s response, although he’s missing a + sign:

Me.btnGenerate.Attributes.Add("onclick", 
    "return OpenPrinterFriendly('DespatchLabel.aspx?salesordernumber=" & _
    e.CommandArgument.ToString & " &newprocessdate=" & hdnNewProcessDate.Value & _
    "&products=' + $('#btnGenerate').data('products'));")