Radio Button Dynamically in ASP.net using html.append - asp.net

Question

I am adding values to html table from a database. What I want is to attach a radio button with each row such that if the user selects a row to be deleted he may do so. I am getting the value of my radio button as vehicle_syskey from the following code and not the numerical value that the variable stores. Below is my code. Please tell me how I can achieve this. Thanks in advance.
protected void Page_Load(object sender, EventArgs e)
{
if (!this.IsPostBack)
{
StringBuilder html = new StringBuilder();
html.Append("<table border=1");
//append headers
//Populating a DataTable from database.
<--Some Relevant Code Present Here>
int vehicle_syskey = 0;
string gm_ymm = null;
foreach (DataRow row in oemTable.Rows)
{
html.Append("<tr>");
vehicle_syskey = Convert.ToInt32(row[0]);
html.Append("<td>");
html.Append("<input type='radio' name='veh_key' class='my_button' value=vehicle_syskey ");
html.Append("</td>");
html.Append("<td>");
html.Append(vehicle_syskey);
html.Append("</td>");
gm_ymm = Convert.ToString(row[1]);
html.Append("<td>");
html.Append(gm_ymm);
html.Append("</td>");
html.Append("<td>");
//Another Query here
foreach (DataRow row1 in vcdbTable.Rows)
{
foreach (DataColumn column1 in vcdbTable.Columns)
{
html.Append(row1[column1.ColumnName]);
html.Append(" ");
}
html.Append("<br>");
}
html.Append("</td>");
}
conn.Close();
//Table end.
html.Append("</table>");
//Append the HTML string to Placeholder.
PlaceHolder1.Controls.Add(new Literal { Text = html.ToString() });
}
}
protected void match1_Click(object sender, EventArgs e)
{
string val = Request.Form["veh_key"].ToString();
Label l1 = new Label();
l1.Text = val;
}