how to insert multiple dynamic row value into the database - asp.net-mvc

Question

public void create(account_detail c, int jobcard_id)
{
SqlConnection con = new SqlConnection(#"Data source =(LocalDB)\v11.0;AttachDbFilename=C:\Users\Wattabyte Inc\Documents\CarInfo.mdf;Integrated Security=True;");
SqlCommand cmd = new SqlCommand();
cmd.CommandType = CommandType.Text;
cmd.Connection = con;
con.Open();
foreach (var details in c.Data)
{
cmd.CommandText = "insert into child_detail values ('" + jobcard_id + "','" + details.completed_by + "','" + details.reporting_time + "','" + details.cost_activity + "','" + details.spared_part_used + "');";
cmd.ExecuteNonQuery();
}
}
I am using this code but it only taking single value but I want to save the multiple values into the database ?

Answer 1

Try something like:
string additionalText = string.Empty;
bool needComma = false;
foreach (var details in c.Data)
{
if (needComma)
additionalText += ", ";
else
needComma = true;
additionalText += "('" + jobcard_id + "','" + details.completed_by + "','" + details.reporting_time + "','" + details.cost_activity + "','" + details.spared_part_used + "')";
}
cmd.CommandText = "insert into child_detail values " + additionalText + ";";
cmd.ExecuteNonQuery();
Basic idea - prepare the string of teh command in the foreach loop, then execute the command once.