javascript - Error when using ScriptManager to close current window and open another one -


i have problem when executing below line of code, want show success message , closing current window , open one.

scriptmanager.registerclientscriptblock(this, this.gettype(), "alertmessage", "alert(' progress has been finished '),  window.close(), window.open('reqprogdetail.aspx?v=0&codlic="+  convert.toint32(_idlicense) + "#section1') ", true);

my hiddenfield :

hiddenfield _idlicense = (hiddenfield)dv.findcontrol("hid_id_license");

and exception message :

system.invalidcastexception: unable cast object of type  'system.web.ui.webcontrols.hiddenfield' type  'system.iconvertible'.  @ system.convert.toint32(object value)

you're getting error because you're trying convert hiddenfield object int, have retrieve value in hiddenfield object first before converting int.

try changing part of code:

convert.toint32(_idlicense)

into :

convert.toint32(_idlicense.value)

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