http://www.connectionstrings.com

http://www.dofactory.com/Patterns/Patterns.aspx
 
http://www.designpatternsfor.net/

http://weblogs.asp.net/stephenwalther/archive/2008/10/21/essential-visual-studio-tips-amp-tricks-that-every-developer-should-know.aspx

and

http://fernandof.wordpress.com/2007/03/16/visual-studio-keyboard-shortcuts-every-developer-should-know/

http://msdn.microsoft.com/en-us/library/bb410048.aspx

In the article above follow all the stpes described there except the  following block -

<AccessControlList>
<AccessControlEntry Principal=”your domain\you”>
<Right BdcRight=”Execute”/>
<Right BdcRight=”Edit”/>
<Right BdcRight=”SetPermissions”/>
<Right BdcRight=”SelectableInClients”/>
</AccessControlEntry>
<AccessControlEntry Principal=”your domain\your BDC users”>
<Right BdcRight=”Execute”/>
<Right BdcRight=”SelectableInClients”/>
</AccessControlEntry>
</AccessControlList>
After uploading the BDC, you can easily modify the permissions.
I am not describing anything about how to upload or how to create BDC as it is described in the above article.
Apart from this, you can also use the tools named “bdcmetaman” to create a BDC application definition file. You can download the tool from the link below -
http://www.lightningtools.com/bdc-meta-man/default.aspx
you can create a BDC application definition file on the fly with this tool . Also watch the video availble in the link above to know how to use the tool.

http://support.microsoft.com/kb/224351

For your convenience, I am putting some code below. I worte the code for a sharepoint project to remove document properties. Hope it helps.

Imports System.IO
Public Class RemoveAllProperty

Private m_oDocument As DSOFile.OleDocumentPropertiesClass

Public Function RemoveProperties(ByVal oStream As Stream) As MemoryStream

‘get the temporay file name along with the path
Dim sFileName As String = Path.GetTempFileName()

Dim oFileStream As System.IO.FileStream
oFileStream = New System.IO.FileStream(sFileName, System.IO.FileMode.Create, FileAccess.ReadWrite)

‘copy the stream
CopyStream(oStream, oFileStream)

oStream.Close()
oFileStream.Close()
oFileStream.Dispose()

Dim oSummProps As DSOFile.SummaryProperties
Dim oCustProp As DSOFile.CustomProperty

Dim sFile As String

sFile = sFileName

m_oDocument = New DSOFile.OleDocumentPropertiesClass
m_oDocument.Open(sFile, False, DSOFile.dsoFileOpenOptions.dsoOptionDefault)
oSummProps = m_oDocument.SummaryProperties

Try
‘remove all the summary properties value
oSummProps.Title = “”
oSummProps.Author = “”
oSummProps.Subject = “”
oSummProps.Manager = “”
oSummProps.Company = “”
oSummProps.Comments = “”
oSummProps.Category = “”
oSummProps.Keywords = “”

Catch ex As Exception
Microsoft.Office.Server.Diagnostics.PortalLog.LogString(“Exception Occurred: {0} || {1}”, ex.Message, ex.StackTrace)
End Try

Dim oRmProp As DSOFile.CustomProperties

oRmProp = m_oDocument.CustomProperties

‘remove all the custom properties value
For Each oCustProp In m_oDocument.CustomProperties
Try
oCustProp.Remove()
Catch ex As Exception
Microsoft.Office.Server.Diagnostics.PortalLog.LogString(“Exception Occurred: {0} || {1}”, ex.Message, ex.StackTrace)
End Try
Next oCustProp

m_oDocument.Save()
m_oDocument.Close()
m_oDocument = Nothing

‘After removing the properties, read the file from the temp directory and read the file into a byte array and return
Dim oFile As System.IO.FileInfo
oFile = New System.IO.FileInfo(sFile)
‘oFileStream = New System.IO.FileStream(sFileName, System.IO.FileMode.Open)
Try
oFileStream = New System.IO.FileStream(sFileName, System.IO.FileMode.Open, FileAccess.Read, FileShare.Read)
Catch ex As Exception
Microsoft.Office.Server.Diagnostics.PortalLog.LogString(“Exception Occurred: {0} || {1}”, ex.Message, ex.StackTrace)
End Try

Dim oMS As New System.IO.MemoryStream()

‘copy stream to memory stream
CopyStream(oFileStream, oMS)

oFileStream.Close()
oFileStream.Dispose()

‘after the read the temporary file into a byte array, delete the temporary file from temp directory

oFile.Delete()

Return oMS

‘Return oFileStream

End Function

‘copy stream from one stream to another
Private Sub CopyStream(ByVal readStream As Stream, ByVal writeStream As Stream)
Dim Length As Integer = 256
Dim buffer As Byte() = New Byte(Length – 1) {}
Dim bytesRead As Integer = readStream.Read(buffer, 0, Length)
‘ write the required bytes
While bytesRead > 0
writeStream.Write(buffer, 0, bytesRead)
bytesRead = readStream.Read(buffer, 0, Length)
End While
‘readStream.Close()
‘writeStream.Close()
End Sub

End Class