asp.net - Cannot load second form c# -

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i'm working web form. want open windows form in web page. cannot load windows form. can it. 

 protected void btn_insertperson_click(object sender, eventargs e)     {         if (txt_tagetstartdate.text != "" &&  txt_targetenddate.text != "")         {             slmslct = new salemanselect();             slmslct.show();             btn_insertperson.enabled = false;         }      }

i believe proper usage is

slmslct.showdialog();

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