Problem related to progressbar control

swatii

What I am trying to figure out is how to display a progress bar when im performing a large task. This task will consist of reading records from a database, writing them to a text file, manipulating the data to write to a database and then present them on the screen. There can be several thousand records that I have to manipulate. I am having trouble getting a progressbar to accuratly display the progress. My problem seems to be that since i cant determine exactly how many records and how much time it will take that I cant accuratly update the progressbar. Any help is appreciated. Thanks

tlhintoq

Quote:

My problem seems to be that since i cant determine exactly how many records

If you don't know how many records, then how are you able to go through them all? You either know how many at *some* point or you don't. If you don't know how many you are working with then not only could you not accurately produce a progress bar, but you wouldn't be able to ensure you are handling them all.

Frinavale

When you read from the Database you will know the number of records that you are manipulating.

Set the progress bar's Maximum property to this number.....

VB code example:

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Dim totalNumberOfRecords As Integer 'This number is set when you retrieve the records from the database
 
Private Sub CopyWithProgress(ByVal ParamArray filenames As String())

    ' Display the ProgressBar control.

    pBar1.Visible = True

    ' Set Minimum to 1 to represent the first file being copied.

    pBar1.Minimum = 1

    ' Set Maximum to the total number of records

    pBar1.Maximum = totalNumberOfRecords

    ' Set the initial value of the ProgressBar.

    pBar1.Value = 1

    ' Set the Step property to a value of 1 to represent each file being copied.

    pBar1.Step = 1
 
    ' Loop through all files to copy.

    Dim x As Integer

    for x = 1 To totalNumberOfRecords - 1

          'Do Stuff....Then

          'Perform the increment on the ProgressBar.

           pBar1.PerformStep()

    Next x

End Sub

C# code:

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Integer  totalNumberOfRecords // This number is set when you retrieve the records from the database

private void CopyWithProgress(string[] filenames)

{

  // Display the ProgressBar control.

  pBar1.Visible = true;

  // Set Minimum to 1 to represent the first file being copied.

  pBar1.Minimum = 1;

  // Set Maximum to the total number records.

  pBar1.Maximum =totalNumberOfRecords ;

  // Set the initial value of the ProgressBar.

  pBar1.Value = 1;

  // Set the Step property to a value of 1 to represent each file being copied.

  pBar1.Step = 1;
 
   // Loop through all files to copy.

   for (int x = 1; x <= totalNumberOfRecords; x++)

   {  //Do Stuff...Then:

      // Perform the increment on the ProgressBar.

     pBar1.PerformStep();
 
   }

}

Problem related to progressbar control

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re: Problem related to progressbar control

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