Dropdownlist 弹出提示信息
string link = ClientScript.GetPostBackEventReference(ddlApplicationStatus, "");
ddlApplicationStatus.Attributes["onchange"] =
"javascript:if(document.getElementById('" + ddlApplicationStatus.ClientID + "').value=='3')confirm('Are yo sure payment?') ? " + link +
" : document.getElementById('" + ddlApplicationStatus.ClientID + "').value = '" +
ddlApplicationStatus.SelectedValue + "'; ";