To show line breaks in asp:label element or for that matter inside Gridview, do the following  in case of Mandatory/ Nullable fields.

<ItemTemplate>  
        <%# ((string)Eval("Details")).Replace("\n", "<br/>") 
%>  
</ItemTemplate>  
 
 
<ItemTemplate>  
        <%# FormatString(Eval("Details"))  
%>  
</ItemTemplate>

 

In code behind, add the following FormatString function -

protected

string FormatString(string strHelpMessage)

{

string rtnString = string.Empty;

if (!string.IsNullOrEmpty(strHelpMessage))

rtnString = strHelpMessage.Replace(

Environment.NewLine, "<br/>");

return rtnString;

}