PageSetupDialog result not change

[ywscr]

Hello,

I am using PageSetupDialog in my application to change the pagesettings of
the document,I changed PaperSize To "A4" in PageSetupDialog ,But it's result PaperSize no change ??I want Set PaperSize in PageSetupDialog And result OK;
source code:
private void button2_Click(o bject sender, EventArgs e)
{
pd = new PrintDocument() ;
PageSetupDialog mPS = new PageSetupDialog ();
foreach (PaperSize ps in pd.PrinterSetti ngs.PaperSizes)
{
if (ps.PaperName == "Letter")
{
pd.PrinterSetti ngs.DefaultPage Settings.PaperS ize = ps;
pd.DefaultPageS ettings.PaperSi ze = ps;
}
}
mPS.Document = pd;
if (mPS.ShowDialog () == DialogResult.OK ) //i change PaperSize to "A4"
{
mPS.PageSetting s;
mPS.PrinterSett ings;
mPS.Document.De faultPageSettin gs.PrinterSetti ngs;
mPS.Document.De faultPageSettin gs.PaperSize;
//all result PaperSize is "Letter",bu t in PageSetupDialog run "print" button And Set PaperSize to "A4" in PrintDialog,res ule OK;
}
}