How to declare value in <p> </p> ?

<h5 class="h5size"> Kuantiti Produk </h5>
<p><%#Eval("PQuantity") %></p>

protected void rptrProductDetails_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
{
string BrandID = (e.Item.FindControl("hfBrandID") as HiddenField).Value;
string CatID = (e.Item.FindControl("hfCatID") as HiddenField).Value;
string SubCatID = (e.Item.FindControl("hfSubCatID") as HiddenField).Value;
string GenderID = (e.Item.FindControl("hfGenderID") as HiddenField).Value;

RadioButtonList rblSize = e.Item.FindControl("rblSize") as RadioButtonList;

using (SqlConnection con = new SqlConnection(CS))
{
using (SqlCommand cmd = new SqlCommand("select * from tblSizes where BrandID='" + BrandID + "' and CategoryID=" + CatID + " and SubCategoryID=" + SubCatID + " and GenderID=" + GenderID + "", con))
{
cmd.CommandType = CommandType.Text;
using (SqlDataAdapter sda = new SqlDataAdapter(cmd))
{
DataTable dt = new DataTable();
sda.Fill(dt);
rblSize.DataSource = dt;
rblSize.DataTextField = "sizename";
rblSize.DataValueField = "sizeid";
rblSize.DataBind();
}
}
}
Int64 PID = Convert.ToInt64(Request.QueryString["PID"]);
using (SqlConnection con = new SqlConnection(CS))
{
using (SqlCommand cmd = new SqlCommand("select * from tblProducts where PID=@PID", con))
{
cmd.CommandType = CommandType.Text;

using (SqlDataAdapter sda = new SqlDataAdapter(cmd))
{
DataTable dt = new DataTable();
sda.Fill(dt);
if (dt.Rows.Count > 0)
{
Int32 myQty = Convert.ToInt32(dt.Rows[0]["PQuantity"].ToString());
System.Web.UI.WebControls.Button btn = (System.Web.UI.WebControls.Button)e.Item.FindControl("btnAddToCart") as System.Web.UI.WebControls.Button;
if (myQty == 0)
{
btn.Enabled = false;
}
else if (myQty > 0)
{
btn.Enabled = true;
}
}
}
}
}
}
}

using (SqlCommand cmd = new SqlCommand("select * from tblProducts where PID=@PID", con))