Spire.PDF提供了两种类PdfTable和PdfGrid用于创建PDF表格，二者在对表格进行格式化操作时存在以下差别：

通过 PdfTable 类创建表格

static void Main(string[] args)
{
    //创建一个PDF文档
    PdfDocument doc = new PdfDocument();

    //添加一页
    PdfPageBase page = doc.Pages.Add();

    //创建一个PdfTable对象
    PdfTable table = new PdfTable();

    //设置字体
    table.Style.DefaultStyle.Font = new PdfTrueTypeFont(new Font("宋体", 9f), true);
    table.Style.HeaderStyle.Font = new PdfTrueTypeFont(new Font("宋体", 9f), true);

    //创建一个DataTable并写入数据
    DataTable dataTable = new DataTable();
    dataTable.Columns.Add("名字");
    dataTable.Columns.Add("年龄");
    dataTable.Columns.Add("性别");
    dataTable.Rows.Add(new string[] { "张红", "22", "女" });
    dataTable.Rows.Add(new string[] { "王东", "25", "男" });

    //填充数据到PDF表格
    table.DataSource = dataTable;

    //显示表头（默认不显示）
    table.Style.ShowHeader = true;

    //在BeginRowLayout事件处理方法中注册自定义事件
    table.BeginRowLayout += Table_BeginRowLayout;


    //将表格绘入PDF并指定位置和大小
    table.Draw(page, new RectangleF(0, 20, 200, 90));

    //保存到文档
    doc.SaveToFile("PDF表格_1.pdf");
}

//在自定义事件中设置行高
private static void Table_BeginRowLayout(object sender, BeginRowLayoutEventArgs args)
{
    args.MinimalHeight = 20f;
}

Private Shared Sub Main(args As String())
	'创建一个PDF文档
	Dim doc As New PdfDocument()

	'添加一页
	Dim page As PdfPageBase = doc.Pages.Add()

	'创建一个PdfTable对象
	Dim table As New PdfTable()

	'设置字体
	table.Style.DefaultStyle.Font = New PdfTrueTypeFont(New Font("宋体", 9F), True)
	table.Style.HeaderStyle.Font = New PdfTrueTypeFont(New Font("宋体", 9F), True)

	'创建一个DataTable并写入数据
	Dim dataTable As New DataTable()
	dataTable.Columns.Add("名字")
	dataTable.Columns.Add("年龄")
	dataTable.Columns.Add("性别")
	dataTable.Rows.Add(New String() {"张红", "22", "女"})
	dataTable.Rows.Add(New String() {"王东", "25", "男"})

	'填充数据到PDF表格
	table.DataSource = dataTable

	'显示表头（默认不显示）
	table.Style.ShowHeader = True

	'在BeginRowLayout事件处理方法中注册自定义事件
	AddHandler table.BeginRowLayout, AddressOf Table_BeginRowLayout


	'将表格绘入PDF并指定位置和大小
	table.Draw(page, New RectangleF(0, 20, 200, 90))

	'保存到文档
	doc.SaveToFile("PDF表格_1.pdf")
End Sub

'在自定义事件中设置行高
Private Shared Sub Table_BeginRowLayout(sender As Object, args As BeginRowLayoutEventArgs)
	args.MinimalHeight = 20F
End Sub

通过 PdfGrid 创建表格

创建一个简单的表格

//创建一个PDF文档
PdfDocument doc = new PdfDocument();

//添加一页
PdfPageBase page = doc.Pages.Add();

//创建一个PdfGrid对象
PdfGrid grid = new PdfGrid();

//设置单元格边距
grid.Style.CellPadding = new PdfPaddings(1, 1, 1, 1);

//添加2行4列
PdfGridRow row1 = grid.Rows.Add();
PdfGridRow row2 = grid.Rows.Add();
grid.Columns.Add(4);

//设置列宽
foreach (PdfGridColumn col in grid.Columns)
{
    col.Width = 60f;
}

//写入数据
for (int i = 0; i < grid.Columns.Count; i++)
{
    row1.Cells[i].Value = String.Format("col{0}", i + 1);
    row2.Cells[i].Value = String.Format("{0}", i + 1);
}

//将表格绘入文档
grid.Draw(page, new PointF(0, 20));

//保存到文档
doc.SaveToFile("PDF表格_2.pdf");

'创建一个PDF文档
Dim doc As New PdfDocument()

'添加一页
Dim page As PdfPageBase = doc.Pages.Add()

'创建一个PdfGrid对象
Dim grid As New PdfGrid()

'设置单元格边距
grid.Style.CellPadding = New PdfPaddings(1, 1, 1, 1)

'添加2行4列
Dim row1 As PdfGridRow = grid.Rows.Add()
Dim row2 As PdfGridRow = grid.Rows.Add()
grid.Columns.Add(4)

'设置列宽
For Each col As PdfGridColumn In grid.Columns
	col.Width = 60F
Next

'写入数据
For i As Integer = 0 To grid.Columns.Count - 1
	row1.Cells(i).Value = [String].Format("col{0}", i + 1)
	row2.Cells(i).Value = [String].Format("{0}", i + 1)
Next

'将表格绘入文档
grid.Draw(page, New PointF(0, 20))

'保存到文档
doc.SaveToFile("PDF表格_2.pdf")

合并单元格，设置背景色和文字对齐方式

//创建PDF文档
PdfDocument doc = new PdfDocument();

//添加一页
PdfPageBase page = doc.Pages.Add();

//创建一个PdfGrid对象
PdfGrid grid = new PdfGrid();

//设置单元格边距
grid.Style.CellPadding = new PdfPaddings(1, 1, 1, 1);

//设置表格默认字体
grid.Style.Font= new PdfTrueTypeFont(new Font("宋体", 9f), true);

//添加4行4列
PdfGridRow row1 = grid.Rows.Add();
PdfGridRow row2 = grid.Rows.Add();
PdfGridRow row3 = grid.Rows.Add();
PdfGridRow row4 = grid.Rows.Add();
grid.Columns.Add(4);

//设置列宽
foreach (PdfGridColumn col in grid.Columns)
{
    col.Width = 60f;
}

//写入数据
row1.Cells[0].Value = "订单及支付情况";
row2.Cells[0].Value = "订单号";
row2.Cells[1].Value = "日期";
row2.Cells[2].Value = "客户";
row2.Cells[3].Value = "是否付款";
row3.Cells[0].Value = "00223";
row3.Cells[1].Value = "2016/06/02";
row3.Cells[2].Value = "阳光地产";
row3.Cells[3].Value = "是";
row4.Cells[0].Value = "00224";
row4.Cells[1].Value = "2016/06/03";
row4.Cells[3].Value = "否";

//水平和垂直合并单元格
row1.Cells[0].ColumnSpan = 4;
row3.Cells[2].RowSpan = 2;

//设置单元格内文字对齐方式
row1.Cells[0].StringFormat = new PdfStringFormat(PdfTextAlignment.Center);
row3.Cells[2].StringFormat = new PdfStringFormat(PdfTextAlignment.Justify, PdfVerticalAlignment.Middle);

//设置单元格背景颜色
row1.Cells[0].Style.BackgroundBrush = PdfBrushes.Gray;
row3.Cells[3].Style.BackgroundBrush = PdfBrushes.Green;
row4.Cells[3].Style.BackgroundBrush = PdfBrushes.MediumVioletRed;

//设置边框颜色、粗细
PdfBorders borders = new PdfBorders();
borders.All = new PdfPen(Color.Black, 0.1f);
foreach (PdfGridRow pgr in grid.Rows)
{
    foreach (PdfGridCell pgc in pgr.Cells)
    {
        pgc.Style.Borders = borders;
    }
}

//在指定为绘入表格
grid.Draw(page, new PointF(0, 20));

//保存到文档
doc.SaveToFile("PDF表格_3.pdf");

'创建PDF文档
Dim doc As New PdfDocument()

'添加一页
Dim page As PdfPageBase = doc.Pages.Add()

'创建一个PdfGrid对象
Dim grid As New PdfGrid()

'设置单元格边距
grid.Style.CellPadding = New PdfPaddings(1, 1, 1, 1)

'设置表格默认字体
grid.Style.Font = New PdfTrueTypeFont(New Font("宋体", 9F), True)

'添加4行4列
Dim row1 As PdfGridRow = grid.Rows.Add()
Dim row2 As PdfGridRow = grid.Rows.Add()
Dim row3 As PdfGridRow = grid.Rows.Add()
Dim row4 As PdfGridRow = grid.Rows.Add()
grid.Columns.Add(4)

'设置列宽
For Each col As PdfGridColumn In grid.Columns
	col.Width = 60F
Next

'写入数据
row1.Cells(0).Value = "订单及支付情况"
row2.Cells(0).Value = "订单号"
row2.Cells(1).Value = "日期"
row2.Cells(2).Value = "客户"
row2.Cells(3).Value = "是否付款"
row3.Cells(0).Value = "00223"
row3.Cells(1).Value = "2016/06/02"
row3.Cells(2).Value = "阳光地产"
row3.Cells(3).Value = "是"
row4.Cells(0).Value = "00224"
row4.Cells(1).Value = "2016/06/03"
row4.Cells(3).Value = "否"

'水平和垂直合并单元格
row1.Cells(0).ColumnSpan = 4
row3.Cells(2).RowSpan = 2

'设置单元格内文字对齐方式
row1.Cells(0).StringFormat = New PdfStringFormat(PdfTextAlignment.Center)
row3.Cells(2).StringFormat = New PdfStringFormat(PdfTextAlignment.Justify, PdfVerticalAlignment.Middle)

'设置单元格背景颜色
row1.Cells(0).Style.BackgroundBrush = PdfBrushes.Gray
row3.Cells(3).Style.BackgroundBrush = PdfBrushes.Green
row4.Cells(3).Style.BackgroundBrush = PdfBrushes.MediumVioletRed

'设置边框颜色、粗细
Dim borders As New PdfBorders()
borders.All = New PdfPen(Color.Black, 0.1F)
For Each pgr As PdfGridRow In grid.Rows
	For Each pgc As PdfGridCell In pgr.Cells
		pgc.Style.Borders = borders
	Next
Next

'在指定为绘入表格
grid.Draw(page, New PointF(0, 20))

'保存到文档
doc.SaveToFile("PDF表格_3.pdf")