Question

i have a table in my database as freespace… it has a column called freesize with its datatype as int.

i have three valuse in it :

1065189988

1073741818

1073741819

now i try to get the total free space but i get an error.

private void GetFreeSpace()
    {
        DataTable dt = new DataTable();
        SqlConnection connection = new SqlConnection();
        connection.ConnectionString = ConfigurationManager.ConnectionStrings["SumooHAgentDBConnectionString"].ConnectionString;
        connection.Open();
        SqlCommand sqlCmd = new SqlCommand("select sum(freesize)* 0.000000000931322575 as freespace from freespace", connection);
        SqlDataAdapter sqlDa = new SqlDataAdapter(sqlCmd);
        sqlDa.Fill(dt);
        connection.Close();
        if (dt.Rows.Count > 0)
        {
          double  freeSpace = Convert.ToDouble(dt.Rows[0]["freespace"].ToString());
        }
    }

Arithmetic overflow error converting expression to data type int.

Line 123:            SqlCommand sqlCmd = new SqlCommand("select sum(freesize)* 0.000000000931322575 as freespace from freespace", connection);
Line 124:            SqlDataAdapter sqlDa = new SqlDataAdapter(sqlCmd);
Line 125:            **sqlDa.Fill(dt);** here i get error
Line 126:            connection.Close();
Line 127:            if (dt.Rows.Count > 0)

Any suggestions of how to get the value in freespace without changing the datatype?

Thanks

I know it works good with bigint, but I want int.

Answer 1

So you’re summing 3 large integers, then multiplying by a tiny double, but still want the output to be an int?

you could retrieve each row as an int, then do your math in c#

or you could cast the int to a bigint or double before the sum, so you don’t overflow there.