How Can I Change The CommandTimeout Value?

When I try to execute a query and after 30 seconds the program sends me error :

Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding.

Exception Detail: System.Data.SqlClient.SqlException: Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding.

Source error:

 Line 550         Dim myDataSet as Dataset = New DataSet

 Line 551         myDataSet = db.ExecuteDataSet(System.Data.CommanType.Text,NewSql)    <==  Error line

 Line 552         i=myDataSet.Tables(0).Rows.Count

 

In my connection string I set the parameter "Connection Timeout" = 360 but it not works. ( In debug mode the value for db.GetConnection.ConnectionTimeout is the same(360) like the parameter timeout connection.

 

After many searchs I found the default value for CommandTimeout is 30 secs.  Can I change this value ?

 

Any suggestion will be welcome. 

I'm using FrameWork 1.1.