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]

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:

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:

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();
 
   }
}