PrintPreviewDialog shows the page but prints blank - winforms

Question

I'm trying to print a page with the previously created users.
The PrintPreviewDialog show up correctly formatted but when I click the print button the printer prints a blank page.
I also get blank page with using the PrintDialog(). I assigned the PrintDocument value for both PrintDialog() and PrintPreviewDialog() from the form designer properties.
Here is my code. Thanks for your help. Regards.
private void printButton_Click_1(object sender, EventArgs e)
{
if (userGenerator != null)
{
try
{
printDocument.DefaultPageSettings.PaperSize = new PaperSize("A4", 827, 1170);
if (imageLogo == null)
{
userCount = 0;
printDocument.PrintPage += new PrintPageEventHandler(pd_PrintPage);
}
else
{
userCount = 0;
printDocument.PrintPage += new PrintPageEventHandler(pd_PrintPage_WithImage);
}
printPreviewDialog.ShowDialog();
if (printDialog.ShowDialog() == DialogResult.OK)
{
printDocument.Print();
}
}
catch (Exception ex)
{
MessageBox.Show("An error occured while printing", ex.ToString());
}
}
else
{
MessageBox.Show("You have to create users first.");
}
}
private void pd_PrintPage_WithImage(object sender, PrintPageEventArgs ev)
{
int userX = 15, userY = 70;
int lineCount = 0;
int linesPerPage = 9;
User.User printedUser = null;
if (userCount < userGenerator.users.Count)
{
printedUser = userGenerator.users[userCount];
}
for (int i = userCount; i < userGenerator.users.Count; i++)
{
if (lineCount < linesPerPage)
{
printedUser = userGenerator.users[userCount];
//Horizontal line
ev.Graphics.DrawLine(Pens.Black, userX, userY, userX + 250, userY);
//Draw logo
ev.Graphics.DrawImage(imageLogo, userX + 100, userY + 5, 40, 40);
ev.Graphics.DrawString("Username: " + printedUser.username + Environment.NewLine + "Password: " + printedUser.password, printFont, Brushes.Black, userX, userY + 60);
//Horizontal lines
ev.Graphics.DrawLine(Pens.Black, userX, userY + 50, userX + 250, userY + 50);
ev.Graphics.DrawLine(Pens.Black, userX, userY + 120, userX + 250, userY + 120);
//Vertical lines
ev.Graphics.DrawLine(Pens.Black, userX, userY, userX, userY + 120);
ev.Graphics.DrawLine(Pens.Black, userX + 250, userY, userX + 250, userY + 120);
userCount++;
if (userCount % 3 == 0)
{
userX = 15;
userY += 120;
lineCount++;
}
else
{
userX += 270;
}
}
}
if (printedUser != null && userCount < userGenerator.users.Count)
{
ev.HasMorePages = true;
}
else
{
ev.HasMorePages = false;
}
}
private void pd_PrintPage(object sender, PrintPageEventArgs ev)
{
int userX = 15, userY = 70;
int lineCount = 0;
int linesPerPage = printFont.Height;
User.User printedUser = null;
if (userCount < userGenerator.users.Count)
{
printedUser = userGenerator.users[userCount];
}
for (int i = userCount; i < userGenerator.users.Count; i++)
{
if (lineCount < linesPerPage)
{
printedUser = userGenerator.users[userCount];
ev.Graphics.DrawString("Username: " + printedUser.username + Environment.NewLine + "Password: " + printedUser.password, printFont, Brushes.Black, userX, userY);
ev.Graphics.DrawLine(Pens.Black, userX, userY, userX + 250, userY);
ev.Graphics.DrawLine(Pens.Black, userX, userY + 50, userX + 250, userY + 50);
ev.Graphics.DrawLine(Pens.Black, userX, userY, userX, userY + 50);
ev.Graphics.DrawLine(Pens.Black, userX + 250, userY, userX + 250, userY + 50);
userCount++;
if (userCount % 3 == 0)
{
userX = 15;
userY += 50;
lineCount++;
}
else
{
userX += 270;
}
}
}
if (printedUser != null && userCount < userGenerator.users.Count)
{
ev.HasMorePages = true;
}
else
{
ev.HasMorePages = false;
}
}