VB.NET

SharePoint -- Download a Text File into a String Variable

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Demonstrates how to download a text file from SharePoint into a string variable. VB.NET

Dim success As Boolean = False

' This requires the Chilkat API to have been previously unlocked.
' See Global Unlock Sample for sample code.

' -------------------------------------------------------------------------
' The following comments apply to SharePoint Windows classic authentication.
' -------------------------------------------------------------------------
' For example, imagine our SharePoint endpoint is https://xyzoffice.mycompany.com/
' The SHAREPOINT_NTLM_DOMAIN would be "mycompany.com"
' The SHAREPOINT_HTTPS_DOMAIN would be "xyzoffice.mycompany.com"
' Also, the SHAREPOINT_USERNAME would be just the name, not a full email address.
' for example, "chilkat" instead of "chilkat@mycompany.com"

Dim http As New Chilkat.Http

' If SharePoint Windows classic authentication is used, then set the 
' Login, Password, LoginDomain, and NtlmAuth properties.
http.Login = "SHAREPOINT_USERNAME"
http.Password = "SHAREPOINT_PASSWORD"
http.LoginDomain = "SHAREPOINT_NTLM_DOMAIN"
http.NtlmAuth = True

' -------------------------------------------------------------------------
' The more common case is to use SharePoint Online authentication (via the SPOIDCRL cookie).
' If so, do not set Login, Password, LoginDomain, and NtlmAuth, and instead
' establish the cookie as shown at SharePoint Online Authentication
' -------------------------------------------------------------------------

' This example downloads a CSV file that is utf-8 and contains Japanese characters.

Dim url As String = "https://SHAREPOINT_HTTPS_DOMAIN/_api/web/GetFileByServerRelativeUrl('/Documents/ChilkatTest/japanese.csv')/$value"

http.AcceptCharset = "utf-8"

Dim strCsv As String = http.QuickGetStr(url)
If (http.LastMethodSuccess <> True) Then
    Debug.WriteLine(http.LastErrorText)
    Exit Sub
End If


' The CSV file is contained in strCsv.
Debug.WriteLine("CSV:")
Debug.WriteLine(strCsv)

' Note: The HTTP response hopefully indicates the charset of the response,
' and Chilkat should receive the string correctly.  If the response sent by
' SharePoint does not indicate a charset, or indicates an incorrect charset,
' then we can instead download the text file as binary data and interpret the
' bytes ourselves correctly.  For example:  

Dim bd As New Chilkat.BinData
success = http.QuickGetBd(url,bd)
If (success <> True) Then
    Debug.WriteLine(http.LastErrorText)
    Exit Sub
End If


' Interpret the bytes correctly as utf-8
Dim sb As New Chilkat.StringBuilder
sb.AppendBd(bd,"utf-8",0,0)
Debug.WriteLine("CSV:")
Debug.WriteLine(sb.GetAsString())