help me please

hi guys , how are you ? I hope you all fine ..

here

iam creating html table from c# code by using these tow  classes

HtmlTableRow ro = new HtmlTableRow ();

HtmlTableCell ce = new HtmlTableCell();

and now I,m trying to access the css style for this table to add border style and color etc...

I tried this

 ro.Style.Add("border", "100px");
            ro.Style.Add("border-width", "100px");
            ro.Style.Add("border-color", "red");
            ro.Style["border"] = "100px";

but they all doesn't work , I really don't know why

((maybe)) because there is no element in html file for the table  and I created it all from c# code , because when t i try to access any element in html

I just add runatserver = true then i can access to it ..

I hope you guys can help me

thanks