//add attachments samples
public static void AddAttachmentsSamples()
{
using (Connection K2Conn = new Connection())
{
//dummy values for process instance ID and activity instance ID
int processInstanceId = 1;
int activityInstanceDestinationID = 10;
string fileName = "Report1.pdf";
//Add an Attachment using the Connection class and the Process Instance's ID
IWorkflowAttachment _attachment = K2Conn.AddAttachment(processInstanceId, fileName, GetFile("Report1.pdf"));
//Add an Attachment using the Connection class and the Worklist Item's SerialNumber
IWorkflowAttachment _attachment1 = K2Conn.AddAttachment("[_serialNo]", fileName, GetFile("Report1.pdf"));
//Add an Attachment using the Connection class and the Process Instance's ID and Activity Instance Destination's ID
IWorkflowAttachment _attachment2 = K2Conn.AddAttachment(processInstanceId, activityInstanceDestinationID, fileName, GetFile("Report1.pdf"));
//Add an Attachment using the Process Instance
ProcessInstance _processInstance = K2Conn.OpenProcessInstance(processInstanceId);
IWorkflowAttachment _attachment3 = _processInstance.AddAttachment(fileName, GetFile("Report1.pdf"));
//Add an Attachment using the WorklistItem
WorklistItem _worklistItem = K2Conn.OpenWorklistItem("[_serialNo]");
IWorkflowAttachment _attachment4 = _worklistItem.AddAttachment(fileName, GetFile("Report1.pdf"));
//Async exampe, where you create the attachment first and then upload the file
//Add an 'empty' attachment
IWorkflowAttachment _attachment5 = K2Conn.AddAttachment(processInstanceId, fileName, null);
//now upload the attachment's file.
//Note. You can only upload the file once and only for an 'empty' attachment.
//Note. This can be used for async purposes, to create the metadata first and secondly upload the file.
IAttachment attachmentWithContent = K2Conn.UploadAttachmentContent(_attachment.Id, GetFile("Report1.pdf"));
}
}
//retrieve attachments samples
public static void GetAttachmentsSamples()
{
using (Connection K2Conn = new Connection())
{
//dummy values for process instance ID and activity instance ID
int processInstanceId = 1;
int activityInstanceDestinationID = 10;
//Get all the Attachments using the Process Instance's ID
//By default this call will always return the attachment's files.
IEnumerable <IWorkflowAttachment> attachments = K2Conn.GetAttachments(processInstanceId);
foreach (IWorkflowAttachment attachment1 in attachments)
{
//retrieve the attachment file into an IO stream
System.IO.Stream fileContents = attachment1.GetFile();
}
//Get all the Attachments using the SerialNumber
//By default this call will always return the attachment's files.
IEnumerable <IWorkflowAttachment> attachments2 = K2Conn.GetAttachments("[_serialNo]");
//Get all the Attachments using the Process Instance's ID and Activity Instance Destination's ID
//By default this call will always return the attachment's files.
IEnumerable <IWorkflowAttachment> attachments3 = K2Conn.GetAttachments(processInstanceId, activityInstanceDestinationID);
//Get all the Attachments from the Process Instance's 'Attachments' property
ProcessInstance _processInstance = K2Conn.OpenProcessInstance(processInstanceId);
IEnumerable <IWorkflowAttachment> procInstAttachments = _processInstance.Attachments;
//Get all the Attachments from the Worklist Item's 'Attachments' property
WorklistItem _worklistItem = K2Conn.OpenWorklistItem("[_serialNo]");
IEnumerable <IWorkflowAttachment> WLItemAttachments = _worklistItem.Attachments;
//Get the Attachment by passing the Attachment's ID
//By default this call will always return the attachment's file.
int attachmentId = 1;
IWorkflowAttachment attachment = K2Conn.GetAttachment(attachmentId);
//save the attachment.
SaveFile(attachment.FileName, attachment.GetFile());
//Get the Attachment by passing the Attachment's ID
//pass 'false' for the includeFile parameter to only load the file on demand.
IWorkflowAttachment attachmentNoFile = K2Conn.GetAttachment(attachmentId, false);
//Get all the Attachments using the Process Instance's ID and Activity Instance Destination's ID
//pass 'false' for the includeFile parameter to only load the file on demand.
IEnumerable <IWorkflowAttachment> attachments4 = K2Conn.GetAttachments(processInstanceId, activityInstanceDestinationID, false);
//Iterate through the attachments
foreach (IAttachment attachment4 in attachments4)
{
//only get specific user's attachments
if (attachment4.FQN.Equals(@"K2:Denallix\Bob"))
{
//use the attachment.GetFile() method to load the attachment's file and cache it.
using (System.IO.Stream downloadStream = attachment.GetFile())
{
SaveFile(attachment.FileName, downloadStream);
}
}
}
}
}
