voici le vieux code qui pose probleme 

quand la fenetre est ouverte le bouton OK ne fonctionne pas 

depuis plusieurs semaines j'ai cet erreur que je n'arrive pas resoudre

j'ai tout essaye en vain

merci de m'aider

private void ShowargumentDialog(GridViewRow gridViewRow)
        {
            MesEntities db = new MesEntities();
            StringBuilder javascript = new StringBuilder();
            StringBuilder html = new StringBuilder();
            int fournisseurID = Convert.ToInt32(Server.HtmlDecode(gridViewRow.Cells[(int)EnumColumns.fournisseurID].Text).Trim());
            string fournisseurCode = Server.HtmlDecode(gridViewRow.Cells[(int)EnumColumns.fournisseurCode].Text).Trim();
            string fournisseurNom = Server.HtmlDecode(gridViewRow.Cells[(int)EnumColumns.fournisseurNom].Text).Trim();
            int domaineID = Convert.ToInt32(Server.HtmlDecode(gridViewRow.Cells[(int)EnumColumns.domaineID].Text).Trim());
            string domaineCode = Server.HtmlDecode(gridViewRow.Cells[(int)EnumColumns.domaineCode].Text).Trim();
            string domaineDescr = Server.HtmlDecode(gridViewRow.Cells[(int)EnumColumns.domaineDescr].Text).Trim();
            string domaineDateOuverture = Server.HtmlDecode(gridViewRow.Cells[(int)EnumColumns.domaineDateOuverture].Text).Trim();
            string domaineDateFermeture = Server.HtmlDecode(gridViewRow.Cells[(int)EnumColumns.domaineDateFermeture].Text).Trim();
            int statutID = Convert.ToInt32(Server.HtmlDecode(gridViewRow.Cells[(int)EnumColumns.StatutID].Text).Trim());
            string statut = Server.HtmlDecode(gridViewRow.Cells[(int)EnumColumns.Statut].Text).Trim();
            int ardID = Convert.ToInt32(Server.HtmlDecode(gridViewRow.Cells[(int)EnumColumns.ARDID].Text).Trim());
            string ardCode = Server.HtmlDecode(gridViewRow.Cells[(int)EnumColumns.ARDCode].Text).Trim();
            string ardNom = Server.HtmlDecode(gridViewRow.Cells[(int)EnumColumns.ARDNom].Text).Trim();
            int asdID = Convert.ToInt32(Server.HtmlDecode(gridViewRow.Cells[(int)EnumColumns.ASDID].Text).Trim());
            string asdCode = Server.HtmlDecode(gridViewRow.Cells[(int)EnumColumns.ASDCode].Text).Trim();
            string asdNom = Server.HtmlDecode(gridViewRow.Cells[(int)EnumColumns.ASDNom].Text).Trim();
            string soldeTIC = Server.HtmlDecode(gridViewRow.Cells[(int)EnumColumns.SoldeTIC].Text).Trim();
            string soldeDIFF = Server.HtmlDecode(gridViewRow.Cells[(int)EnumColumns.SoldeDIFF].Text).Trim();
            string soldeB = Server.HtmlDecode(gridViewRow.Cells[(int)EnumColumns.SoldeB].Text).Trim();
            string soldeEE = Server.HtmlDecode(gridViewRow.Cells[(int)EnumColumns.SoldeEE].Text).Trim();
            if (Double.Parse(soldeTIC) >= 100)
            {
                CheckBox chkSelect = null;
                if (gridViewRow.FindControl("chkSelect") != null)
                {  chkSelect = (CheckBox)gridViewRow.FindControl("chkSelect"); }
                string argument = Tools.Getargument(db, domaineID);
                argument = argument.Replace("\r", "");
                argument = argument.Replace("\n", "");
                fournisseurCode = fournisseurCode.Replace("\r", "");
                fournisseurCode = fournisseurCode.Replace("\n", "");
                if (fournisseurNom.Trim().Length > 40)
                { fournisseurNom = fournisseurNom.Substring(0, 40);       }
                fournisseurNom = fournisseurNom.Replace("\r", "");
                fournisseurNom = fournisseurNom.Replace("\n", "");
                domaineCode = domaineCode.Replace("\r", "");
                domaineCode = domaineCode.Replace("\n", "");
                if (domaineDescr.Trim().Length > 40)
                {  domaineDescr = domaineDescr.Substring(0, 40);}
                domaineDescr = domaineDescr.Replace("\r", "");
                domaineDescr = domaineDescr.Replace("\n", "");
                html.Append("<div class=\"panel-body\">");
                html.Append("<div class=\"form-horizontal\">");
                html.Append("<div class=\"form-group\">");
                html.Append("<span class=\"control-label col-sm-2\">fournisseur :</span>");
                html.Append("<div class=\"col-sm-10\">");
                html.AppendFormat("<input type=\"text\" class=\"form-control\" readonly value=\"{0} - {1}\" />", Server.HtmlEncode(fournisseurCode), Server.HtmlEncode(fournisseurNom));
                html.Append("</div>");
                html.Append("</div>");
                html.Append("<div class=\"form-group\">");
                html.Append("<span class=\"control-label col-sm-2\">domaine :</span>");
                html.Append("<div class=\"col-sm-10\">");
                html.AppendFormat("<input type=\"text\" class=\"form-control\" readonly value=\"{0} - {1}\" />", Server.HtmlEncode(domaineCode), Server.HtmlEncode(domaineDescr));
                html.Append("</div>");
                html.Append("</div>");
                html.Append("<div class=\"form-group\">");
                html.Append("<span class=\"control-label col-sm-2\">Solde TIC :</span>");
                html.Append("<div class=\"col-sm-5\">");
                html.AppendFormat("<input type=\"text\" class=\"form-control text-right\" readonly value=\"{0}\" />", Server.HtmlEncode(soldeTIC));
                html.Append("</div>");
                html.Append("</div>");
                html.Append("<div id=\"divargument\" class=\"form-group\">");
                html.Append("<div class=\"col-sm-12\">");
                html.Append("<textarea id=\"argument\" class=\"form-control\" rows=\"6\" placeholder=\"Une argument est requise pour les honoraires de $100 et plus.\">");
                html.Append(Server.HtmlEncode(argument));
                html.Append("</textarea>");
                html.Append("</div>");
                html.Append("</div>");
                html.Append("</div>");
                html.Append("</div>");

                javascript.Length = 0;
                javascript.Append("BootstrapDialog.show({");
                javascript.Append("    title: 'argument',");
                javascript.AppendFormat("    message: '{0}',", html.ToString());
                javascript.Append("    closable: false,");
                javascript.Append("    type: 'type-primary',");
                javascript.Append("    data: {");
                javascript.AppendFormat("        'domaineID' : '{0}'", domaineID);
                javascript.Append("    },");
                javascript.Append("    buttons: [{"); // bouton non fonctionnel                 javascript.Append("        label: 'OK',");
                javascript.Append("        cssClass: 'btn btn-primary btn-100',");
                javascript.Append("        action: function (dialogRef) {");
                javascript.Append("    	       var argument = dialogRef.getModalBody().find('textarea').val();");
                javascript.Append("    	       if ($.trim(argument).length == 0) {");
                javascript.Append("                $('#divargument').addClass('has-error');");
                javascript.Append("            }");
                javascript.Append("            else {");
                javascript.Append("               var actions = new Services.Actions();"); // service non reconnu - undefine                 javascript.Append("                actions.Setargument(");
                javascript.Append("                    { \"domaineID\": \"'" + domaineID.ToString() + "'\", \"Description\": argument  },");
                javascript.Append("                    null,");
                javascript.Append("                    null,");
                javascript.Append("                    null);");
                javascript.Append("                dialogRef.close();");
                javascript.Append("            }");
                javascript.Append("        }");
                javascript.Append("    }, {");
                javascript.Append("        label: 'Annuler',");
                javascript.Append("        cssClass: 'btn btn-primary btn-100',");
                javascript.Append("        action: function (dialogRef) {");
                javascript.Append("            dialogRef.close();");
                if (argument.Trim().Length == 0)
                { javascript.AppendFormat("      $('#{0}').attr('checked', false);", chkSelect.fournisseurID); }
                javascript.Append("        }");
                javascript.Append("    }]");
                javascript.Append("});");
                ScriptManager.RegisterStartupScript(this.Page, this.Page.GetType(), "Message", javascript.ToString(), true);
            }
        }