void PrintButtonClick(object sender, EventArgs e)

        {

            PrintPreviewDialog dlg = new PrintPreviewDialog();

            //page setting

            PageSetupDialog psp = new PageSetupDialog();

            psp.AllowMargins = true;

            SourceGrid.Exporter.GridPrintDocument pd = new SourceGrid.Exporter.GridPrintDocument(this.grid);

            //页边距开关 若关闭：打印时页边距设置无效、不起作用的原因及解决方法

            pd.OriginAtMargins = true;

            //是否 横向打印

            pd.DefaultPageSettings.Landscape = true;

            //左边距 左边距宽度（以百分之一英寸为单位）

            pd.DefaultPageSettings.Margins.Left = ;

            psp.PageSettings = pd.DefaultPageSettings;

            //显示 英寸还是毫米

            psp.EnableMetric = true;

            if (psp.ShowDialog() == DialogResult.OK)

            {

                pd.DefaultPageSettings = psp.PageSettings;

            }

            pd.RangeToPrint = new SourceGrid.Range(, , this.grid.Rows.Count - , this.grid.Columns.Count - );

            pd.PageHeaderText = "Print sample\t\tSourceGrid print document sample";

            pd.PageTitleText = "\tSample grid";

            pd.PageFooterText = "\tPage [PageNo] from [PageCount]";

            dlg.Document = pd;

            dlg.ShowDialog(this);

        }