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Progress bar on Form / Progress in Class Function

Greetings.
I have a progress bar on Form1.cs

A button on Form1.cs calls the "click" event, which creates an object

DAT2XLS document = DAT2XLS(sourcefile, schemafile);

Then it executes the function:

DAT2XLS.doyourwork();

I am attempting to do this in the background.

I need to have doyourwork() report progress.
Since it is in a different class, I don't know how to tell the progressbar what the progress is.

I appreciate any wisdom on this.

Thank you.

Vel Eous

You could create a custom event handler in your class doing the work, then your form can reference it and become aware when the event is triggered.

http://www.switchonthecode.com/tutorials/csharp-snippet-tutorial-custom-event-handlers

Evan Cutler

ASKER

ok.
I read the article, but a bit confused.
Here's my form code:

        private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
        {
            DAT2XLS D2X = new DAT2XLS(TXTBinFile.Text, TXTXMLSchemaFile.Text);
            D2X.ETLRUN();
        }


       private void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e)
       {
           PBXFR.Value = e.ProgressPercentage;
       }

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and Here's my class (some of it):

    public class DAT2XLS
    {
        String DatFile;
        String SchemaFile;

        public DAT2XLS(String Dat, String Schema)
        {
            DatFile = Dat;
            SchemaFile = Schema;
        }

        public void ETLRUN()
        {
                //sudocode here
                open file;
                totallines;  //gives the "100%"
                start file back at top;
                linecount = 0;
                do while (!end of file)
                         read line, do something //gives current line
                percent = linecount / totallines;
                SEND PERCENT VALUE BACK TO PROGRESSCHANGED
        }

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ok...how do I tell ETLRUN() to throw the percentage back to ProgressChanged in the form class? Thanks.

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Mike Tomlinson

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Evan Cutler

ASKER

Thanks for all of your help...
I'm having issues still

D2X_Progress is not sending the value to ProgressChanged (I think)...
or ProgressChanged is not accepting something.

The PBXFR.Value is not updating.

Thank you so much for walking me through this.

Evan Cutler

ASKER

Never mind, it was my calculations that didn't push the value.
THANK YOU SO MUCH!!!!

This worked perfectly.
This is an invaluable tool.