Why this exception?

[HowTo]

con = New OleDbConnection("Provider=Microsoft.Jet.Oledb.4.0;Data Source=db1.mdb")
02	con.Open()
03	cmd = New OleDbCommand("Select * from Table1 where Name='gautam';" & "Select * from Table1 where Name='arijit';" & "Select * from Table1 where Name='muah'", con)
04	Dim dr As OleDbDataReader
05	dr = cmd.ExecuteReader()
06	dr.Read()
07	textBox1.Text = dr(0).ToString()
08	textBox2.Text = dr(1).ToString()
09	textBox3.Text = dr(2).ToString()
10	textBox4.Text = dr(3).ToString()
11	dr.NextResult()
12	dr.Read()
13	textBox5.Text = dr(0).ToString()
14	textBox6.Text = dr(1).ToString()
15	textBox7.Text = dr(2).ToString()
16	textBox8.Text = dr(3).ToString()
17	dr.NextResult()
18	dr.Read()
19	textBox9.Text = dr(0).ToString()
20	textBox10.Text = dr(1).ToString()
21	textBox11.Text = dr(2).ToString()
22	textBox12.Text = dr(3).ToString()
23	dr.Close()
24	cmd.Dispose()
25	con.Close()

i am getting this exception:


please help