Insert a column value to database using session

Question

I want to insert a value into a table which comes from a session variable.The code that i have written is:

       protected void Button1_Click(object sender, EventArgs e)
{
    double balance;
    double reward;
    if((double.TryParse(lblBalance.Text, out balance) && (double.TryParse(lblReward.Text, out reward))))
    {
    Session["FinalBalance"] = balance + reward;
    }
    else
    {
// some kind of error handling
    }
    string CS = ConfigurationManager.ConnectionStrings["ABCD"].ConnectionString;
    using (SqlConnection con = new SqlConnection(CS))
    {
        con.Open();
        SqlCommand cmd = new SqlCommand("Insert into tblRegister('Balance') values('@FinalBalance')", con);
        cmd.Parameters.AddWithValue("@FinalBalance", Session["FinalBalance"].ToString());
    }
}    

But when i click the submit button,the code doesnt throw any exception and doesnt insert the needful.What is the problem here?

Answer 1

You are making the command object but not executing the query. You have to call ExecuteNonQuery method on Command object to insert record.

using (SqlConnection con = new SqlConnection(CS))
{
    con.Open();
    SqlCommand cmd = new SqlCommand("Insert into tblRegister(Balance) values(@FinalBalance)", con);
    cmd.Parameters.AddWithValue("@FinalBalance", Session["FinalBalance"].ToString());
    cmd.ExecuteNonQuery ();
}