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Imaging.Download Method

  • Artigo

Downloads the specified files (items) in a list on the current Web site.

Namespace:  [Imaging Web service]
Web service reference: http://Site/_vti_bin/Imaging.asmx

Syntax

'Declaration
<SoapDocumentMethodAttribute("https://schemas.microsoft.com/sharepoint/soap/ois/Download", RequestNamespace := "https://schemas.microsoft.com/sharepoint/soap/ois/",  _
    ResponseNamespace := "https://schemas.microsoft.com/sharepoint/soap/ois/",  _
    Use := SoapBindingUse.Literal, ParameterStyle := SoapParameterStyle.Wrapped)> _
Public Function Download ( _
    strListName As String, _
    strFolder As String, _
    itemFileNames As String(), _
    type As UInteger, _
    fFetchOriginalIfNotAvailable As Boolean _
) As XmlNode
'Usage
Dim instance As Imaging
Dim strListName As String
Dim strFolder As String
Dim itemFileNames As String()
Dim type As UInteger
Dim fFetchOriginalIfNotAvailable As Boolean
Dim returnValue As XmlNode

returnValue = instance.Download(strListName, _
    strFolder, itemFileNames, type, fFetchOriginalIfNotAvailable)

[SoapDocumentMethodAttribute("https://schemas.microsoft.com/sharepoint/soap/ois/Download", RequestNamespace = "https://schemas.microsoft.com/sharepoint/soap/ois/", 
    ResponseNamespace = "https://schemas.microsoft.com/sharepoint/soap/ois/", 
    Use = SoapBindingUse.Literal, ParameterStyle = SoapParameterStyle.Wrapped)]
public XmlNode Download(
    string strListName,
    string strFolder,
    string[] itemFileNames,
    uint type,
    bool fFetchOriginalIfNotAvailable
)

Parameters

  • strListName
    Type: System.String

    The name of the list within the current Web site.

  • strFolder
    Type: System.String

    The relative path from the root of the list to the target folder.

  • itemFileNames
    Type: []

    An array of the names of files (items) to download.

  • type
    Type: System.UInt32

    The version of the files to download. Valid values: 0 for original, 1 for thumbnail, 2 for Web image.

  • fFetchOriginalIfNotAvailable
    Type: System.Boolean

    If this parameter is set to true and the requested version is not available for any reason, the original version is fetched.

Return Value

Type: System.Xml.XmlNode
A System.Xml.XmlDocument object that contains the following.

<Files xmlns="https://schemas.microsoft.com/sharepoint/soap/ois/">
  <File name="itemFileNames[0]" found="false"/>
  <File name="itemFileNames[1]" lastmodified="…">
    Base64 encoded bytes of the file content
  </File>
  <File name="itemFileNames[2]" lastmodified="…" 
        originalDownloaded="true">
    Base64 encoded bytes of the file content
  </File>
  .
  .
  .
</Files>

Exceptions

Exception Condition
[0x1]

ListNotFound: The requested list is not found.
[0x2]

IsNotLibrary: The requested list, although found, is not a picture library.
[0x3]

ItemNotFound: The requested list item is not found.
[0x4]

FolderNotFound: The requested folder is not found.
[0x5]

InvalidArgument: One or more arguments are not valid.
[0x6]

FileExists: The file already exists, and the user does not specify the overwrite option.

Examples

The following example downloads the following image file from the "My Pictures" picture library: http://MyServer/sites/mynewsite/MyPictures/1/Red Figure2.gif.

Note

This code assumes that the site and picture library already exist, and that you have permissions on the server. If the site and the picture library do not exist, see the second example.

Dim imgws As New Web_Reference.Imaging()
imgws.Credentials = System.Net.CredentialCache.DefaultCredentials
imgws.Url = "http://MyServer/sites/mynewsite/_vti_bin/imaging.asmx"
Dim resdoc As New System.Xml.XmlDocument()
Dim resnode As System.Xml.XmlNode = 
    resdoc.CreateNode(System.Xml.XmlNodeType.Element, "Result", "")
Dim a(0) As String
a(0) = "Red Figure2.gif"
resnode = imgws.Download("My Pictures", "1", a, 0, True)
MessageBox.Show(resnode.ChildNodes(0).InnerText)

Web_Reference.Imaging imgws = new Web_Reference.Imaging();
imgws.Credentials = System.Net.CredentialCache.DefaultCredentials;
imgws.Url = "http://MyServer/sites/mynewsite/_vti_bin/imaging.asmx";
System.Xml.XmlDocument resdoc= new System.Xml.XmlDocument();
System.Xml.XmlNode resnode = 
    resdoc.CreateNode(System.Xml.XmlNodeType.Element,"Result","");
String[] a = new String[1];
a[0]="Red Figure2.gif";
resnode = imgws.Download("My Pictures","1",a,0,true);
MessageBox.Show(resnode.ChildNodes[0].InnerText);

This example shows how to create the site and picture library, and add the image "Red Figure2.gif" required in the preceding example.

Note

You must be a member of the Administrators site group on the Microsoft Windows SharePoint Services server to be able to add a reference to the Admin Web service and to perform the required actions.

Dim adminws As New Web_Reference.Admin()
adminws.Credentials = System.Net.CredentialCache.DefaultCredentials
Try
    adminws.CreateSite("http://MyServer/sites/my2003site", 
        "My 2003 New Site", _
        "Manage content and pictures for year 2003", 1033, "MPS#0", 
        "User_Alias", "Display_Name", "someone@example.com", "", "")
    Catch ex As Exception
        MessageBox.Show(ex.Message)
End Try

Dim listsws As New Web_Reference.Lists()
listsws.Credentials = System.Net.CredentialCache.DefaultCredentials
listsws.Url = "http://MyServer/sites/mynewsite/_vti_bin/lists.asmx"
Try
    listsws.AddList("My Pictures", "My personal pictures", 109)
    Catch ex1 As Exception
        MessageBox.Show(ex1.Message)
End Try

Dim imgws As New Web_Reference.Imaging()
imgws.Credentials = System.Net.CredentialCache.DefaultCredentials
imgws.Url = "http://MyServer/sites/mynewsite/_vti_bin/imaging.asmx"
Dim resdoc As New System.Xml.XmlDocument()
Dim resnode As System.Xml.XmlNode = 
    resdoc.CreateNode(System.Xml.XmlNodeType.Element, "Result", "")
Dim b As [Byte]() = System.Text.Encoding.Unicode.GetBytes
    ("R0lGODlhCQALAJEAAAoLBv///wAAAP///
    yH5BAEAAAMALAAAAAAJAAsAAAIdlIdmETDAxBAxosm
    CvE9fNU0K40Ae1ZBftq0t9xYAOw==")
imgws.Upload("My Pictures", "1", b, "Red Figure2.gif", True)
MessageBox.Show("Picture uploaded")
Dim a(0) As String
a(0) = "Red Figure1.gif"
resnode = imgws.Download("My Pictures", "1", a, 0, True)
MessageBox.Show(resnode.ChildNodes(0).InnerText)

Web_Reference.Admin adminws = new Web_Reference.Admin();
adminws.Credentials= System.Net.CredentialCache.DefaultCredentials;
try
{
   adminws.CreateSite("http://MyServer/sites/my2003site",
      "My 2003 New Site","Manage content and pictures for year 
      2003",1033,"MPS#0","User_Alias","Display_Name",
      "someone@example.com","","");
}
catch(Exception ex)
{
   MessageBox.Show(ex.Message);
}
Web_Reference.Lists listsws = new Web_Reference.Lists();
listsws.Credentials = System.Net.CredentialCache.DefaultCredentials;
listsws.Url = "http://MyServer/sites/mynewsite/_vti_bin/lists.asmx";
try
{
   listsws.AddList("My Pictures","My personal pictures",109);
}
catch(Exception ex1)
{
   MessageBox.Show(ex1.Message);
}
Web_Reference.Imaging imgws = new Web_Reference.Imaging();
imgws.Credentials = System.Net.CredentialCache.DefaultCredentials;
imgws.Url = "http://MyServer/sites/mynewsite/_vti_bin/imaging.asmx";
System.Xml.XmlDocument resdoc= new System.Xml.XmlDocument();
System.Xml.XmlNode resnode = 
   resdoc.CreateNode(System.Xml.XmlNodeType.Element,"Result","");
Byte[] b =System.Text.Encoding.Unicode.GetBytes
   ("R0lGODlhCQALAJEAAAoLBv///wAAAP///
   yH5BAEAAAMALAAAAAAJAAsAAAIdlIdmETDAxBAxosm
   CvE9fNU0K40Ae1ZBftq0t9xYAOw==");
imgws.Upload("My Pictures","1",b,"Red Figure2.gif", true);
MessageBox.Show("Picture uploaded");
String[] a = new String[1];
a[0]="Red Figure1.gif";
resnode = imgws.Download("My Pictures","1",a,0,true);
MessageBox.Show(resnode.ChildNodes[0].InnerText);

See Also

Reference

Imaging Class

Imaging Members

Imaging Web Service