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How to have the cancel button enabled during an upload process

Discussion in 'C#' started by Leo, Nov 14, 2006.

  1. Leo

    Leo New Member

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    Actually my aim to enable a cancel button while this upload takes place.I tried raising an event which makes the cancel button enabled while the upload process is going on.

    But I am not able to click on the cancel button, i dont get the access to click it.Once the process is completed i am able to click the button to generate the event.

    Does any one know how this can be done in C#(Windows application)

    Sample code is :
    Code:
    while (bytesRead > 0) 
    { 
    
    if (iteration == 1) 
    this._startTime = DateTime.Now; 
    
    bytesWritten = this._workFlowProxy.UploadChunk(this._taskId, buffer, sentBytes, bytesRead); 
    if (iteration == LoadManagerConstants.AverageSample + 1) //AverageSample = 5 
    { 
    timeForInitialChunks = (long)DateTime.Now.Subtract(this._startTime).TotalMilliseconds; 
    averageChunkTime = System.Math.Max 
    (1, timeForInitialChunks / LoadManagerConstants.AverageSample); 
    
    //Maximum size that can be uploaded at a time cannot be more than 4KB 
    chunkSize = (int)System.Math.Min(LoadManagerConstants.MaxFileSize, 
    chunkSize * preferredTransferDuration / averageChunkTime); 
    
    buffer = new byte[chunkSize]; 
    } 
    sentBytes += bytesRead; 
    percentageOfTotalSize = (int)(((decimal)sentBytes / (decimal)fileSize) * 100); 
    this.SetProgressStatus(percentageOfTotalSize); 
    bytesRead = fileToUpLoad.Read(buffer, LoadManagerConstants.Offset, chunkSize); 
    iteration++; 
    }
     
  2. shabbir

    shabbir Administrator Staff Member

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    Refer to thread [thread=1885] How to enable a cancel button when an upload takes place[/thread].
     

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