use select statement inside insert statement in ado.net

[C# Programming]

i use this code

SqlCommand cmd1 = new SqlCommand("insert into '" + comboBox6.SelectedItem.ToString() + "' (name,address,telephone,website,email,info,place_id,cor_x,cor_y)values(" + "'" + textBox_name.Text + "','" + textBox_address.Text + "','" + textBox_telephone.Text + "','" + textBox_website.Text + "','" + textBox_email.Text + "','" + richTextBox_info.Text + "' , select id from places where name= '"+ comboBox6.SelectedItem.ToString() +"','" + textBox_corx.Text + "','" + textBox_cory.Text + "') ", con);



and this error showed

Incorrect syntax near the keyword 'select'.
Incorrect syntax near ','.

what should i do ?