Question

How I could achieve batch update/insert using SQLCommand. I wanted to create SQLCommand text dynamically in for loop of MyObject[] in C# with 10 SQLParameter

in case of bulk insert, i need to check for every record that it already exist or not. i.e.

if not Exists(select pkid from table1 where fkid1=@fkid1 and fkid2=@fkid1)

begin

insert....

end

This is to be done from C#.No stored procedure in db

Answer 1

SqlCommand command = new SqlCommand();
// Set connection, etc.
for(int i=0; i< items.length; i++) {
    command.CommandText += string.Format("update mytable set s_id=@s_id{0} where id = @id{0};", i);
    command.Parameters.Add("@s_id" + i, items[i].SId);
    command.Parameters.Add("@id" + i, items[i].Id);
}
command.ExecuteNonQuery();