private void Control_PreRender(object sender, EventArgs args)
{
if (IsDesignTime)
{
return;
}
// Find the current upload context
string postBackID = Page.Request.Params["postBackID"];
string barID = Page.Request.Params["barID"];
// Set the status to Cancelled if requested.
if (Page.Request.Params["cancelled"] == "true")
{
UploadModule.CancelPostBack(postBackID);
}
IUploadProgressState progressState = new UploadProgressState();
UploadModule.BindProgressState(postBackID, barID, progressState);
if (progressState.Status == UploadStatus.Unknown)
{
// Status is unknown, so try to find the last post back based on the lastPostBackID param.
// If successful, use the status of the last post back.
string lastPostBackID = Page.Request.Params["lastPostBackID"];
if (lastPostBackID != null && lastPostBackID.Length > 0 && Page.Request.Params["refresher"] == null)
{
UploadModule.BindProgressState(lastPostBackID, barID, progressState);
if (progressState.FileBytesRead == 0 &&
progressState.ProcessingState == null)
{
progressState.Status = UploadStatus.Unknown;
}
}
}
Status = progressState.Status;
ProgressInfo progress = null;
progress = (ProgressInfo)progressState.ProcessingState;
if (progress != null && Status == UploadStatus.Completed)
{
Status = UploadStatus.ProcessingCompleted;
}
Attributes["status"] = Status.ToString();
if (WhenStatus != null)
{
string[] matchingStatuses = WhenStatus.Split(' ');
if (Array.IndexOf(matchingStatuses, Status.ToString()) == -1)
{
this.Visible = false;
}
}
}
private void SetupContext()
{
// Find the current upload context
PostBackID = Request.Params["postBackID"];
ProgressBarID = Request.Params["barID"];
UploadModule.BindProgressState(PostBackID, ProgressBarID, this);
if (log.IsDebugEnabled)
{
log.Debug("Status " + Status + " when SessionID = "
+ (HttpContext.Current.Session != null ? HttpContext.Current.Session.SessionID : null));
}
if (Status == UploadStatus.Unknown)
{
CurrentStatus = UploadStatus.Unknown;
// Status is unknown, so try to find the last post back based on the lastPostBackID param.
// If successful, use the status of the last post back.
string lastPostBackID = Page.Request.Params["lastPostBackID"];
if (lastPostBackID != null && lastPostBackID.Length > 0 && Page.Request.Params["refresher"] == null)
{
UploadModule.BindProgressState(lastPostBackID, ProgressBarID, this);
if (FileBytesRead == 0 && ProcessingState != null)
{
Status = UploadStatus.Unknown;
}
}
}
else
{
if (log.IsDebugEnabled)
{
log.Debug("In ProgressPage, PostBackID = " + PostBackID);
}
if (log.IsDebugEnabled)
{
log.Debug("In ProgressPage, Status = " + Status);
}
CurrentStatus = Status;
}
}
public void ProcessRequest(HttpContext context)
{
string postBackID = context.Request.Params["postBackID"];
string controlID = context.Request.Params["controlID"];
string cancel = context.Request.Params["cancel"];
if (cancel != null && Boolean.Parse(cancel))
{
UploadModule.CancelPostBack(postBackID);
}
UploadModule.BindProgressState(postBackID, controlID, this);
string message = "";
if (Status == UploadStatus.Rejected)
{
message = Rejection.Message;
}
else if (Status == UploadStatus.Failed)
{
message = Failure.Message;
}
context.Response.ContentType = "application/json";
double percentComplete = Math.Floor(100 * FractionComplete);
string processingStateJson = "null";
ProgressInfo progressInfo = ProcessingState as ProgressInfo;
if (progressInfo != null)
{
percentComplete = Math.Floor(100.0 * progressInfo.Value / progressInfo.Maximum);
processingStateJson = String.Format(@"{{ ""Value"" : {0}, ""Maximum"" : {1}, ""Units"" : ""{2}"", ""Text"" : ""{3}"" }}",
progressInfo.Value, progressInfo.Maximum, Quote(progressInfo.Units), progressInfo.Text != null ? Quote(progressInfo.Text) : "");
}
System.Text.StringBuilder filesJson = new System.Text.StringBuilder();
bool isFirstFile = true;
for (int i = 0; Files != null && i < Files.Count; i++)
{
UploadedFile file = Files[i];
if (Status == UploadStatus.NormalInProgress || Status == UploadStatus.ChunkedInProgress || Status == UploadStatus.ProcessingInProgress)
{
AppendFileJson(filesJson, file, ref isFirstFile);
}
else
{
// If the upload isn't in progress, the file might have been disposed which
// can cause exceptions, so we only make a best effort.
try
{
AppendFileJson(filesJson, file, ref isFirstFile);
}
catch (Exception ex)
{
// File was probably disposed so ignore the error.
}
}
}
string jsonFormat = @"{{
""Status"" : ""{0}"",
""BytesRead"" : {1},
""BytesTotal"" : {2},
""PercentComplete"" : {3},
""BytesPerSec"" : {4},
""Message"" : ""{5}"",
""SecsRemaining"" : {6},
""SecsElapsed"" : {7},
""CurrentFileName"" : ""{8}"",
""ProcessingState"" : {9},
""Files"" : [{10}]
}}
";
string json = String.Format(jsonFormat,
Status, BytesRead, BytesTotal, percentComplete, BytesPerSec, Quote(message),
Math.Floor(TimeRemaining.TotalSeconds), Math.Floor(TimeElapsed.TotalSeconds), Quote(CurrentFileName), processingStateJson, filesJson.ToString());
context.Response.Cache.SetCacheability(System.Web.HttpCacheability.NoCache);
context.Response.Write(json);
}
