使用Ajax更新数据库.

1)使用JQuery的Asp.Net Ajax
或
2)使用"ICallbackEventHandler"接口的Asp.Net Ajax.

看看我下面的提示/技巧文章. (不是广告:))
简化Asp.Net Core Ajax

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Could anyone tell me how to update the database from javascript ..

i need to update the database from javascript through aspx.cs page or from webservice

Using Ajax.

1) Asp.Net Ajax using JQuery
OR
2) Asp.Net Ajax using "ICallbackEventHandler" Interface.

Have a look at my below Tips/Trick Article. ( Not an Advertisement :) )
Simplifying Asp.Net Core Ajax