Create And Execute Trigger In C#

Hi all
I've Created a Trigger statement and tried to execute this using ExecuteNonQuery.but it shows the following error

Incorrect syntax near 'GO'.
'CREATE TRIGGER' must be the first statement in a query batch.

if i start with Create Trigger statement it show "Incorrect Syntax near Create Trigger".

the following is the trigger statement which i've generated in C#
Can anyone help me?

thanks in advance
sri


IF EXISTS (SELECT name FROM sysobjects WHERE name = 'SampleTrigger' AND type = 'TR')
DROP TRIGGER SampleTrigger
GO
CREATE TRIGGER SampleTrigger
ON dbo.sample
AFTER INSERT
AS begin
SET NOCOUNT ON
DECLARE @RID as int
DECLARE @email AS nvarchar(50)
SELECT @email= i.email from inserted i
DECLARE @Name AS nvarchar(50)
SELECT @Name= i.Name from inserted i
DECLARE @Address AS nvarchar(50)
SELECT @Address= i.Address from inserted i
insert into Register(ServerName,DatabaseName,TableName) values('Sample','SamDatabase','SamTable')
SELECT @RID = @@Identity
insert into TableFields(RID,FieldName,FieldValue) values(@RID ,'Name',@Name)
insert into TableFields(RID,FieldName,FieldValue) values(@RID ,'Address',@Address)
insert into TableFields(RID,FieldName,FieldValue) values(@RID ,'email',@email)
end