如何在 HTML 中的隐藏字段值中添加新行?



我在HTMl中有HiddenField:

<asp:HiddenField  ID="BodyHiddenField"  runat="server"  Value = " "  />

现在我想在此文本的值中添加多行

感谢您的注册。您的注册已确认。日期 : 24 Feb 2019 时间 : 09:30 AM

要成为 :

First Line = Thank you for registration .Your registration has been confirmed. 
Second Line =  Date : 24 Feb 2019 
Third Line = Time : 09:30 

在 PageLoad 事件中,为隐藏字段赋值

BodyHiddenField.Value="Thank you for registration .Your registration has been confirmed.nn Date : 24 Feb 2019 nn Time : 09:30"

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