c# - 如何从 aspx.cs 页面切换确认消息框

Question

我有一个搜索程序，它将从数据库中查找数据库。如果日期范围超过 3 周，我想提醒他们可能需要一段时间才能处理完数据库中的所有数据。我在 JavaScript 函数中有一个确认消息框。我想检查 aspx.cs 页面中的日期范围。如何根据该条件触发消息框？这是我的一些 html 代码的副本。我不知道如何接近检查站。

function warning() {            
   var answer = confirm("The date range you have selected will return a substantial amount of data and will take some time to process.\n\nAre you sure you want to continue?");
   if (answer)
      return true;
   else
      return false;
}

Answer 1

单击按钮时会弹出继续的确认框

SearchButton.Attributes.Add("onclick", "javascript:return " + "confirm('" + 
"The date range you have selected will return a substantial amount of data and will take some time to process.\n\nAre you sure you want to continue?')");