dynamically creating HTML tables from code behind in asp.net

i can create a dynamic table. but the problem is that i have a condition that if the data came from the database having the city name="Lahore" then add the row to the existing table else create a new table for it:

check this link

http://www.dotnetcurry.com/ShowArticle.aspx?ID=135

//For Add row in table
 private void AddRowInTable()
    {
        HtmlTableRow tr1 = new HtmlTableRow();
        HtmlTableCell tc1 = new HtmlTableCell();
        tc1.Width="20px";
        tc1.Height = "20px";
        HtmlTableCell tc2 = new HtmlTableCell();
        tc2.Width = "20px";
        tc2.Height = "20px";
        tr1.Controls.Add(tc1);
        tr1.Controls.Add(tc2);
        table1.Controls.Add(tr1);
//table1 is existing table
    }
//For create new table
    private void CreateTable()
    {
        HtmlTable ht = new HtmlTable();
        ht.Border = 1;
        HtmlTableRow tr1 = new HtmlTableRow();
        HtmlTableCell tc1 = new HtmlTableCell();
        tc1.Width="20px";
        tc1.Height = "20px";
        tc1.InnerText="Name:";
        HtmlTableCell tc2 = new HtmlTableCell();
        tc2.Width = "20px";
        tc2.Height = "20px";
        tc2.InnerText = "New Table";
        tr1.Controls.Add(tc1);
        tr1.Controls.Add(tc2);
        ht.Controls.Add(tr1);
        Page.Controls.Add(ht);
       
    }