1. XRTableCell常见属性

　 XRTableCell xrTableCell = new XRTableCell();

　 A. 字体及字体大小

xrTableCell.Font = new System.Drawing.Font("Arial", FontSize);

　 B. 内容是否可以换行

　 xrTableCell.WordWrap = False;

C. 文本对齐方式

　 xrTableCell.TextAlignment=DevExpress.XtraPrinting.TextAlignment.MiddleLeft;

D. 边框是否显示及边框宽度

xrTableCell.Borders = DevExpress.XtraPrinting.BorderSide.All;

xrTableCell.BorderWidth = 0.5F;

E. 宽度和高度

　 xrTableCell.WidthF = 30;

　 xrTableCell.HeightF = 30;

　 F. XRTableCell文本前景色

xrTableCell.ForeColor=Color.Red;

G. XRTableCell文本内容左右间隔；

　 DevExpress.XtraPrinting.PaddingInfo padRight= new DevExpress.XtraPrinting.PaddingInfo();
    padRight.Right = 4;

XRTableCell xrTableCell = new XRTableCell();
    xrTableCell.Padding = padRight;

2. xrTable合并单元格(主要针对旧版本)

在新做的一个页面要用到xrTable合并单元格。我先在Design界面加了一个GroupHeader，随后又在GroupHeader中放了一个XRPanel，最后在XRPanel放入由xrTable嵌套的实现合并XRTableCell的功能，最后导致每一页在切换到下一页时输入很奇怪的一条线，最后查了两三天才发现这个问题。后来经过确认其实不需要加XRPanel的，直接放入嵌套的xrTable就可以了，深刻的教训，值得深思！

using System;

using System.Drawing;

using System.Collections;

using System.ComponentModel;

using DevExpress.XtraReports.UI;

using System.Drawing.Printing;

using System.Linq.Expressions;

namespace DevExpressConsole

{

    public partial class TrendAndReport : DevExpress.XtraReports.UI.XtraReport

    {

        public TrendAndReport()

        {

            InitializeComponent();

            PrintDocument();

        }

        private void PrintDocument()

        {

            float TotalWidth = this.PageWidth - this.Margins.Left - this.Margins.Right;

            float CellHeight = ;

            float CondtWidth = ;

            for (int i = ; i <= ; i++)

            {

                XRTable TableContainer = new XRTable();

                TableContainer.CanGrow = true;

                TableContainer.BeginInit();

                for(int j=;j<;j++)

                {

                    XRTableRow TCRow = new XRTableRow();

                    TCRow.CanGrow = true;

                    XRTableCell OrderNo = new XRTableCell();

                    OrderNo.CanGrow = true;

                    OrderNo.WidthF = TotalWidth - CondtWidth - ;

                    OrderNo.HeightF = CellHeight;

                    OrderNo.TextAlignment = DevExpress.XtraPrinting.TextAlignment.MiddleCenter;

                    OrderNo.ProcessDuplicates = DevExpress.XtraReports.UI.ValueSuppressType.Suppress;

                    OrderNo.Text = j +  + "";

                    OrderNo.WordWrap = true;

                    TCRow.Cells.Add(OrderNo);

                    XRTableCell Happy = new XRTableCell();

                    Happy.CanGrow = true;

                    Happy.WidthF = ;

                    Happy.HeightF = CellHeight;

                    Happy.TextAlignment = DevExpress.XtraPrinting.TextAlignment.MiddleCenter;

                    Happy.Text = "I am very happy with this! ";

                    Happy.WordWrap = true;

                    TCRow.Cells.Add(Happy);

                    XRTableCell HW = new XRTableCell();

                    HW.CanGrow = true;

                    HW.WidthF = ;

                    HW.HeightF = CellHeight;

                    HW.TextAlignment = DevExpress.XtraPrinting.TextAlignment.MiddleCenter;

                    HW.Text = "Hello World! ";

                    HW.WordWrap = true;

                    TCRow.Cells.Add(HW);

                    TableContainer.Rows.Add(TCRow);

                }

                TableContainer.KeepTogether = true;

                TableContainer.AdjustSize();

                TableContainer.EndInit();

                XRTable xrTab = new XRTable();

                xrTab.CanGrow = true;

                xrTab.BeginInit();

                xrTab.LocationF = new PointF(,  + TableContainer.HeightF * i);

                XRTableRow row = new XRTableRow();

                row.CanGrow = true;

                XRTableCell cell = new XRTableCell();

                cell.CanGrow = true;

                cell.Borders = DevExpress.XtraPrinting.BorderSide.All;

                cell.Controls.Add(TableContainer);

                cell.WidthF = TableContainer.WidthF;

                row.Cells.Add(cell);

                XRTableCell CONT = new XRTableCell();

                CONT.CanGrow = true;

                CONT.Text = "Cont'd";

                CONT.WidthF = CondtWidth;

                CONT.HeightF = TableContainer.HeightF;

                CONT.Angle = ;

                CONT.Borders = DevExpress.XtraPrinting.BorderSide.All;

                CONT.TextAlignment = DevExpress.XtraPrinting.TextAlignment.MiddleCenter;

                row.Cells.Add(CONT);

                GroupHeader1.Controls.Add(xrTab);

                xrTab.WidthF = TotalWidth;

                xrTab.HeightF = TableContainer.HeightF;

                xrTab.Rows.Add(row);

                xrTab.AdjustSize();

                xrTab.EndInit();

            }

        }

    }

}

3. xrTable分页

其实xrTable只要为每个表设置了LocationF属性，就会被自动挤到下一页，为了需要，还是做了一个例子进行确认：

using System;

using System.Drawing;

using System.Collections;

using System.ComponentModel;

using DevExpress.XtraReports.UI;

using System.Drawing.Printing;

using System.Linq.Expressions;

namespace DevExpressConsole

{

    public partial class TrendAndReport : DevExpress.XtraReports.UI.XtraReport

    {

        int k = ;

        public TrendAndReport()

        {

            InitializeComponent();

            while (k < )

            {

                PrintDocument();

            }

        }

        public void PrintDocument()

        {

            int EveryTabeNum = ;

            int TabPortaitSpan = ;

            XRTable xt = new XRTable();

            xt.CanGrow = true;

            xt.Borders = DevExpress.XtraPrinting.BorderSide.All;

            xt.BorderWidth = 0.5f;

            xt.BeginInit();

            XRTableRow xrow_header = new XRTableRow();

            XRTableCell xc_header = new XRTableCell();

            xc_header.Text = "DevExpress Page Break Usage -- Table" + (k + ).ToString();

            xc_header.TextAlignment = DevExpress.XtraPrinting.TextAlignment.MiddleCenter;

            xrow_header.Cells.Add(xc_header);

            xt.Rows.Add(xrow_header);

            for (int i = ; i < ; i++)

            {

                XRTableRow xrow = new XRTableRow();

                xrow.CanGrow = true;

                xrow.TextAlignment = DevExpress.XtraPrinting.TextAlignment.MiddleCenter;

                for (int j = ; j < ; j++)

                {

                    XRTableCell xc = new XRTableCell();

                    xc.HeightF = 25f;

                    if (i %  == )

                    {

                        if (i /  >= )

                        {

                            xc.Text = "ABCD";

                        }

                        else

                        {

                            xc.Text = DateTime.Now.ToShortDateString();

                        }

                    }

                    else

                    {

                        xc.CanGrow = true;

                        xc.Text = DateTime.Now.ToLocalTime().ToShortTimeString();

                    }

                    xrow.Cells.Add(xc);

                }

                if (i %  == )

                {

                    xrow.BackColor = Color.LightGray;

                }

                xt.Rows.Add(xrow);

            }

            xt.AdjustSize();

            xt.EndInit();

            xt.Font = new System.Drawing.Font(Font.FontFamily, 8f, FontStyle.Regular);

            //Setting the table position.

            xt.LocationF = new PointF(, TabPortaitSpan * k + xt.HeightF * k);

            Detail.Controls.Add(xt);

            xt.WidthF = this.PageWidth - this.Margins.Left - this.Margins.Right-;

            //Add page break for every EveryTabeNum tables.

            if ((k + ) % EveryTabeNum == )

            {

                XRPageBreak pb = new XRPageBreak();

                pb.LocationF = new PointF(, TabPortaitSpan * k + xt.HeightF * (k + ));

                Detail.Controls.Add(pb);

            }

            k++;

        }

    }

}

4. 动态改变xrTable的元素大小

xrTable元素的大小不是我们想的只要设置宽度和高度后会自动生效，它需要在xrTable.BeginInit()和TableContainer.AdjustSize();TableContainer.EndInit();的包裹之内执行，同时设置元素的属性CanGrow/CanShrink为True:

using System;

using System.Drawing;

using System.Collections;

using System.ComponentModel;

using DevExpress.XtraReports.UI;

using System.Drawing.Printing;

using System.Linq.Expressions;

namespace DevExpressConsole

{

    public partial class TrendAndReport : DevExpress.XtraReports.UI.XtraReport

    {

        int k = ;

        public TrendAndReport()

        {

            InitializeComponent();

            PrintDocument();

        }

        public void PrintDocument()

        {

            int TabPortaitSpan = ;

            XRTable xt = new XRTable();

            xt.CanGrow = true;

            xt.Borders = DevExpress.XtraPrinting.BorderSide.All;

            xt.BorderWidth = 0.5f;

            xt.BeginInit();

            for (int i = ; i < ; i++)

            {

                XRTableRow xrow = new XRTableRow();

                xrow.CanGrow = true;

                xrow.HeightF = 50f;

                xrow.TextAlignment = DevExpress.XtraPrinting.TextAlignment.MiddleCenter;

                for (int j = ; j < ; j++)

                {

                    XRTableCell xc = new XRTableCell();

                    if (i %  == )

                    {

                        if (i /  >= )

                        {

                            xc.Text = "ABCD";

                        }

                        else

                        {

                            xc.Text = DateTime.Now.ToShortDateString();

                        }

                    }

                    else

                    {

                        xc.Text = DateTime.Now.ToLocalTime().ToShortTimeString();

                    }

                    xrow.Cells.Add(xc);

                }

                if (i %  == )

                {

                    xrow.BackColor = Color.LightGray;

                }

                xt.Rows.Add(xrow);

            }

            xt.AdjustSize();

            xt.EndInit();

            xt.Font = new System.Drawing.Font(Font.FontFamily, 8f, FontStyle.Regular);

            xt.LocationF = new PointF(, TabPortaitSpan * k + xt.HeightF * k);

            Detail.Controls.Add(xt);

            xt.WidthF = this.PageWidth - this.Margins.Left - this.Margins.Right-;

        }

    }

}

以下为设置前后的对比图：

设置前：

设置后：

5. 在XRTableCell.AdjustSize();XRTableCell.EndInit();前后设置XRTableCell宽度Width的区别

    在XRTableCell.AdjustSize();XRTableCell.EndInit();执行前设置XRTable的宽度，则XRTableCell的宽度会以当前设置的值为准，不会再发生变化，如下图所示：

在XRTableCell.AdjustSize();XRTableCell.EndInit();执行后设置XRTable的宽度，则XRTableCell的宽度会以当前XRTable的宽度为基准根据内容自动调整宽度，如下所示：

6. 需要注意的几点

　A. XRTable背景色可以通过整行去添加背景色，而不需要一个一个XRTableCell去设置：

　XRTableRow xrTableRow = new XRTableRow();

　xrTableRow.BackColor = Color.LightGray;

B. 设置XRTable的边框及颜色会覆盖xrTableRow和xrTableCell之前的设置，所以在设置时要从外到里进行设置。

7. 总结：

以上就是这次用递归动态生成XRTable时所领会到的经验和教训，特此总结，以便备用！

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