Create table runtime using c sharp code

Create table runtime using c sharp code

 try  
 {  
 if (RadioButton1.Checked == true)  
 {  
 string first = TextBox1.Text.ToString();  
 string last = TextBox3.Text.ToString();  
 string user = TextBox4.Text.ToString();  
 string ps = TextBox6.Text.ToString();  
 string quest = DropDownList1.Text.ToString();  
 string answ = TextBox7.Text.ToString();  
 string source = "Data Source=.\\SQLEXPRESS;AttachDbFilename=|DataDirectory|\\dfd.mdf;Integrated Security=True; User Instance=True";  
 SqlConnection conn = new SqlConnection(source);  
 conn.Open();  
 SqlCommand cmd = new SqlCommand("INSERT INTO users(fname, lname, uid, pswd, ques, ans) VALUES ('" + first + "', '" + last + "', '" + user + "', '" + ps + "', '" + quest + "', '" + answ + "')", conn);  
 int i = cmd.ExecuteNonQuery();  
 String sql = "CREATE TABLE " + user + "" +"(StudentId INTEGER CONSTRAINT PkeyMyId PRIMARY KEY," + "Name CHAR(50), Address CHAR(255), Contact INTEGER)";  
 cmd = new SqlCommand(sql, conn);  
 cmd.ExecuteNonQuery();  
 Response.Redirect("home.aspx");  
 conn.Close();  
 }}}