How to write the code for insert the checked items in database from html table

Dim HtmlStr As String = ""         'For i As Integer = 0 To dt.Rows.Count - 1         HtmlStr += "<table id='table1' border='1' align='center'  runat='server' >"         HtmlStr += "<tr>" HtmlStr += "<th>" + "TeamName" + "</th>"         HtmlStr += "<th>" + "TeamMember" + "</th>"         HtmlStr += "</tr>"         For i As Integer = 0 To dt.Rows.Count - 1           & ...