C# - Passing C# Variable to JavaScript -


i have following line of code in c#:

page.clientscript.registerstartupscript(page.gettype(), null, "window.open('http://localhost:4000/transaction_number.aspx?num=<%=trans_number%>', '_newtab')", true);

now, trans_number variable in c# code-behind. problem when process query string (num variable), result always:

<%trans_number%>

instead of contents of variable. how can solve this?

i think, can resolve pretty easily... maybe:

page.clientscript.registerstartupscript(page.gettype(), null, "window.open('http://localhost:4000/transaction_number.aspx?num=" + trans_number + "', '_newtab')", true);

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