Perform SUM query in ADO.NET - sql-server

Question

I am getting following error
;expected
I am trying to find sum of column values in my webform.
protected void Page_Load(object sender, EventArgs e)
{
con.Open();
SqlCommand cmd = con.CreateCommand();
cmd.CommandType = CommandType.Text;
cmd.CommandText = "Select SUM("AMOUNT DEPOSITED ") From MAIN_TABLE6";
Double amount = cmd.ExecuteScalar();
Label3.Text = amount.ToString();
}

Answer 1

Use brackets to enclose your columns in SQL Server.
protected void Page_Load(object sender, EventArgs e)
{
con.Open();
SqlCommand cmd = con.CreateCommand();
cmd.CommandType = CommandType.Text;
cmd.CommandText = "Select SUM([AMOUNT DEPOSITED]) From MAIN_TABLE6";
Double amount = cmd.ExecuteScalar();
Label3.Text = amount.ToString();
}

Answer 2

I update-voted the answer by #ϻᴇᴛᴀʟ because he solved the problem with the brackets. However I like to see that database objects are closed and disposed. If database objects are kept local to the methods where they are used then using blocks accomplish this even if there is and error.
It is possible to pass the connection string directly to the constructor of the connection and pass the command text and connection to the constructor of the command. CommandType.Text is the default value so it is not necessary to set it.
I have opened the connection directly before the .Execute... and it is closed immediately after. The user interface is not updated until the connection is closed.
protected void Page_Load(object sender, EventArgs e)
{
double amount;
using (SqlConnection con = new SqlConnection("Your connection string"))
using (SqlCommand cmd = new SqlCommand("Select SUM([AMOUNT DEPOSITED]) From MAIN_TABLE6;", con))
{
con.Open();
amount = (double)cmd.ExecuteScalar();
}
Label3.Text = amount.ToString();
}