Hello alls,

i have problem about query and filter data on xml file.
my xml file structure like this :

Code:
<Inventory>
	<xs:schema id="Inventory" xmlns="" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
		<xs:element name="Inventory" msdata:IsDataSet="true">
			<xs:complexType>
				<xs:choice maxOccurs="unbounded">
					<xs:element name="Customers">
						<xs:complexType>
							<xs:sequence>
								<xs:element name="CustomerID" type="xs:string" minOccurs="0" />
								<xs:element name="CompanyName" type="xs:string" minOccurs="0" />
								<xs:element name="ContactName" type="xs:string" minOccurs="0" />
								<xs:element name="ContactTitle" type="xs:string" minOccurs="0" />
								<xs:element name="Address" type="xs:string" minOccurs="0" />
								<xs:element name="City" type="xs:string" minOccurs="0" />
								<xs:element name="Region" type="xs:string" minOccurs="0" />
								<xs:element name="PostalCode" type="xs:string" minOccurs="0" />
								<xs:element name="Country" type="xs:string" minOccurs="0" />
								<xs:element name="Phone" type="xs:string" minOccurs="0" />
								<xs:element name="Fax" type="xs:string" minOccurs="0" />
								<xs:element name="Pin" type="xs:string" minOccurs="0" />
								<xs:element name="SalesID" type="xs:string" minOccurs="0" />
								<xs:element name="StsKunjugan" type="xs:boolean" minOccurs="0" />
							</xs:sequence>
						</xs:complexType>
					</xs:element>					
				</xs:choice>
			</xs:complexType>
		</xs:element>
	</xs:schema>
	<Customers>
		<CustomerID>TBW</CustomerID>
		<CompanyName>Toko Berani Wangi</CompanyName>
		<ContactName>Kosasih</ContactName>
		<ContactTitle>Owner</ContactTitle>
		<Address>Pertokoan Mayestik</Address>
		<City>Jakarta</City>
		<PostalCode>05023</PostalCode>
		<Country>Mexico</Country>
		<Phone>(5) 555-3932</Phone>
		<Pin>123</Pin>
		<SalesID>ALI</SalesID>
		<StsKunjugan>false</StsKunjugan>
		<SelesmanID>YH</SelesmanID>
	</Customers>
	<Customers>
		<CustomerID>TWWS</CustomerID>
		<CompanyName>Toko Wangi-Wangi Segar</CompanyName>
		<ContactName>Linda</ContactName>
		<ContactTitle>Owner</ContactTitle>
		<Address>Pertokoan Tebet Barat</Address>
		<City>Jakarta</City>
		<PostalCode>13008</PostalCode>
		<Country>France</Country>
		<Phone>91.24.45.40</Phone>
		<Fax>91.24.45.41</Fax>
		<Pin>123</Pin>
		<SalesID>ALI</SalesID>
		<StsKunjugan>false</StsKunjugan>
		<SelesmanID>YH</SelesmanID>
	</Customers>
	<Customers>
		<CustomerID>MPIMI</CustomerID>
		<CompanyName>Metro PIM I</CompanyName>
		<ContactName>Margaret</ContactName>
		<ContactTitle>Manager Area</ContactTitle>
		<Address>Margaguna</Address>
		<City>Jakarta</City>
		<PostalCode>WX1 6LT</PostalCode>
		<Country>UK</Country>
		<Phone>(171) 555-2282</Phone>
		<Fax>(171) 555-9199</Fax>
		<Pin>123</Pin>
		<SalesID>Yahya</SalesID>
		<StsKunjugan>false</StsKunjugan>
		<SelesmanID>YH</SelesmanID>
	</Customers>
	<Customers>
		<CustomerID>SPIMII</CustomerID>
		<CompanyName>Sogo PIM II</CompanyName>
		<ContactName>Susi</ContactName>
		<ContactTitle>Manager Area</ContactTitle>
		<Address>Pondok Indah Raya</Address>
		<City>Jakarta</City>
		<PostalCode>1675</PostalCode>
		<Country>Portugal</Country>
		<Phone>(1) 354-2534</Phone>
		<Fax>(1) 354-2535</Fax>
		<Pin>123</Pin>
		<SalesID>ALI</SalesID>
		<StsKunjugan>false</StsKunjugan>
		<SelesmanID>YH</SelesmanID>
	</Customers>
	<Customers>
		<CustomerID>SPS</CustomerID>
		<CompanyName>Sogo Plaza Senayan</CompanyName>
		<ContactName>Indra</ContactName>
		<ContactTitle>Manager Area</ContactTitle>
		<Address>Asia Afrika</Address>
		<City>Jakarta</City>
		<PostalCode>08022</PostalCode>
		<Country>Spain</Country>
		<Phone>(93) 203 4560</Phone>
		<Fax>(93) 203 4561</Fax>
		<Pin>123</Pin>
		<SalesID>Yahya</SalesID>
		<StsKunjugan>false</StsKunjugan>
		<SelesmanID>YH</SelesmanID>
	</Customers>
	<Customers>
		<CustomerID>SPI</CustomerID>
		<CompanyName>Sogo Plaza Indonesia</CompanyName>
		<ContactName>Dwi</ContactName>
		<ContactTitle>Manager Area</ContactTitle>
		<Address>Husni Thamrin </Address>
		<City>Jakarta</City>
		<PostalCode>41101</PostalCode>
		<Country>Spain</Country>
		<Phone>(95) 555 82 82</Phone>
		<Pin>123</Pin>
		<SalesID>ALI</SalesID>
		<StsKunjugan>false</StsKunjugan>
		<SelesmanID>ALI</SelesmanID>
	</Customers>
	<Customers>
		<CustomerID>GMTA</CustomerID>
		<CompanyName>Galeria Matahari Taman Anggrek</CompanyName>
		<ContactName>Adi </ContactName>
		<ContactTitle>Manager Area</ContactTitle>
		<Address>Grogol Raya</Address>
		<City>Jakarta</City>
		<Region>Nueva Esparta</Region>
		<PostalCode>4980</PostalCode>
		<Country>Venezuela</Country>
		<Phone>(8) 34-56-12</Phone>
		<Fax>(8) 34-93-93</Fax>
		<Pin>123</Pin>
		<SalesID>ALI</SalesID>
		<StsKunjugan>false</StsKunjugan>
		<SelesmanID>ALI</SelesmanID>
	</Customers>
	<Customers>
		<CustomerID>MSTS</CustomerID>
		<CompanyName>Matahari Segi Tiga Senen</CompanyName>
		<ContactName>Gunawan</ContactName>
		<ContactTitle>Manager Area</ContactTitle>
		<Address>Senen Raya</Address>
		<City>Jakarta</City>
		<Region>OR</Region>
		<PostalCode>97219</PostalCode>
		<Country>USA</Country>
		<Phone>(503) 555-9573</Phone>
		<Fax>(503) 555-9646</Fax>
		<Pin>123</Pin>
		<SalesID>ALI</SalesID>
		<StsKunjugan>false</StsKunjugan>
		<SelesmanID>ALI</SelesmanID>
	</Customers>
	<Customers>
		<CustomerID>MCJ</CustomerID>
		<CompanyName>Matahari Cibubur Junction</CompanyName>
		<ContactName>Sari</ContactName>
		<ContactTitle>Manager Area</ContactTitle>
		<Address>Akses Cibubur</Address>
		<City>Jakarta</City>
		<PostalCode>1010</PostalCode>
		<Country>Argentina</Country>
		<Phone>(1) 123-5555</Phone>
		<Fax>(1) 123-5556</Fax>
		<Pin>123</Pin>
		<SalesID>ALI</SalesID>
		<StsKunjugan>false</StsKunjugan>
		<SelesmanID>YH</SelesmanID>
	</Customers>
	<Customers>
		<CustomerID>CPM</CustomerID>
		<CompanyName>Centro Plaza Semanggi</CompanyName>
		<ContactName>Permata</ContactName>
		<ContactTitle>Manager Area</ContactTitle>
		<Address>Jendral Sudirman</Address>
		<City>Jakarta</City>
		<PostalCode>B-6000</PostalCode>
		<Country>Belgium</Country>
		<Phone>(071) 23 67 22 20</Phone>
		<Fax>(071) 23 67 22 21</Fax>
		<Pin>123</Pin>
		<SalesID>Yahya</SalesID>
		<StsKunjugan>false</StsKunjugan>
		<SelesmanID>ALI</SelesmanID>
	</Customers>
	<Customers>
		<CustomerID>CMC</CustomerID>
		<CompanyName>Centro Margo City</CompanyName>
		<ContactName>Shinta</ContactName>
		<ContactTitle>Manager Area</ContactTitle>
		<Address>Margonda Raya</Address>
		<City>Jakarta</City>
		<PostalCode>01-012</PostalCode>
		<Country>Poland</Country>
		<Phone>(26) 642-7012</Phone>
		<Fax>(26) 642-7012</Fax>
		<Pin>123</Pin>
		<SalesID>Manto</SalesID>
		<StsKunjugan>false</StsKunjugan>
		<SelesmanID>ALI</SelesmanID>
	</Customers>
	
</Inventory>
my code on vb :

VB Code:
  1. Sub SetData()
  2.  
  3.         Try
  4.             Cursor.Current = Cursors.WaitCursor
  5.             Dim tblcust As DataTable
  6.             Dim tblcust2 As DataTable
  7.             Dim dvmcust As New DataViewManager(dsInv)
  8.             Dim dvcust As DataView
  9.             Dim drcust As DataRow
  10.             Dim tblcustDesc As DataTable
  11.             Dim dvCust2 As DataView
  12.  
  13.          
  14.             tblcust = dsInv.Tables("Customers")
  15.            
  16.             dvmcust.DataViewSettings(tblcust).RowFilter = _
  17.             "SalesmanID='YH'"
  18.             dvcust = dvmcust.CreateDataView(tblcust)
  19.          
  20.  
  21.             dg.DataSource = tblcust2
  22.  
  23.         Catch ex As Exception
  24.         Finally
  25.             Cursor.Current = Cursors.Default
  26.         End Try
  27.  
  28.     End Sub

I want to filter SalesmanID ='YH' but when i run this code data not filter.

1. what is wrong with my code ?
2. How to create Query on Xml FIle, if we have one more table on xml file ?