/// <summary>
/// 将 exportable 中的数据连接到当前 sheet 中
/// 调用顺序: NewExcel() -> NewSheet() -> Union() -> WriteTo() -> CloseExcel().
/// </summary>
/// <param name="header">导出对象头.</param>
/// <param name="callback">导出回调.</param>
/// <returns>
/// this, 以支持链式操作.
/// </returns>
public Exporter UnionHeader(IExportHeader header, ExportCallback callback)
{
//ExportCallback exportCallback = callback;
var context = this._context;
if (context == null)
{
throw new Exception("请先调用 NewExcel()");
}
var sheet = context.Sheet;
if (sheet == null)
{
throw new Exception("请先调用 NewSheet()");
}
var y = context.StartRowIndex;
IRow row = null;
int columnIndex = 0, x = 0;
context.RowIndex = 0;
context.CellType = CellType.HeaderCell;
while (true)
{
context.Reset();
context.ColumnIndex = columnIndex;
if (header.NextHeaderCell(columnIndex, context))
{
if (callback != null)
{
callback(context);
}
if (context.IsValid)
{
// 创建单元格
if (row == null)
{
row = sheet.CreateRow(y++);
}
var cell = row.CreateCell(x++);
// 设置单元格
SetCell(cell, context);
}
++columnIndex;
}
else
{
break;
}
}
context.StartRowIndex = y;
return(this);
}
///// <summary>
///// 将 exportable 中的数据连接到当前 sheet 中
///// 调用顺序: NewExcel() -> NewSheet() -> Union() -> WriteTo() -> CloseExcel().
///// </summary>
///// <param name="exportable">可导出对象.</param>
///// <param name="callback">导出回调.</param>
///// <returns>this, 以支持链式操作.</returns>
//public Exporter Union(Exportable exportable, ExportCallback callback)
//{
// return this
// .UnionHeader((IExportHeader)exportable, callback)
// .Union((IExportable)exportable, callback);
//}
/// <summary>
/// 将 exportable 中的数据连接到当前 sheet 中
/// 调用顺序: NewExcel() -> NewSheet() -> Union() -> WriteTo() -> CloseExcel().
/// </summary>
/// <param name="exportable">可导出对象.</param>
/// <param name="callback">导出回调.</param>
/// <returns>this, 以支持链式操作.</returns>
public Exporter Union(IExportable exportable, ExportCallback callback)
{
//ExportContext context = this._context;
//if (context == null) throw new Exception("请先调用 NewExcel()");
//ISheet sheet = context.Sheet;
//if (sheet == null) throw new Exception("请先调用 NewSheet()");
if (exportable.NextRow(0))
{
return(this.DoUnion(exportable, callback));
}
return(this);
}
/// <summary>
/// 分页导出到 Excel.
/// </summary>
/// <param name="paged">分页的 Exportable.</param>
/// <param name="name">导出目标 sheet 的名称.</param>
/// <param name="zip">导出目标流.</param>
/// <param name="partNameFormat">分页文件命名格式 {0} 代表编号，必须至少包含一个 {0}，否则会出现命名冲突..</param>
/// <param name="callback">导出回调.</param>
/// <returns>this, 以支持链式操作.</returns>
public Exporter ExportToExcelByPage(PagedExportable paged, string name, ZipOutputStream zip, string partNameFormat, ExportCallback callback)
{
var pageIndex = 0;
while (paged.NextRow(0))
{
var fileName = string.Format(partNameFormat, ++pageIndex);
var entry = new ZipEntry(fileName);
entry.DateTime = DateTime.Now;
zip.PutNextEntry(entry);
try
{
this.NewExcel()
.NewSheet(name)
.UnionHeader(paged, callback)
.DoUnion(paged, callback)
.WriteTo(zip);
}
finally
{
this.CloseExcel();
}
paged.NextPage(pageIndex);
}
return(this);
}
/// <summary>
/// 分页导出到 Excel.
/// </summary>
/// <param name="exportable">可导出对象.</param>
/// <param name="name">导出目标 sheet 的名称.</param>
/// <param name="pageSize">每页的大小.</param>
/// <param name="fileName">导出目标流.</param>
/// <param name="partNameFormat">分页文件命名格式 {0} 代表编号，必须至少包含一个 {0}，否则会出现命名冲突..</param>
/// <param name="callback">导出回调.</param>
/// <returns>this, 以支持链式操作.</returns>
public Exporter ExportToExcelByPage(IExportable exportable, string name, int pageSize, string fileName, string partNameFormat, ExportCallback callback)
{
using (var zos = new ZipOutputStream(new FileStream(fileName, FileMode.OpenOrCreate)))
{
return(this.ExportToExcelByPage(exportable, name, pageSize, zos, partNameFormat, callback));
}
}
/// <summary>
/// 分页导出到 Excel.
/// </summary>
/// <param name="exportable">可导出对象.</param>
/// <param name="name">导出目标 sheet 的名称.</param>
/// <param name="pageSize">每页的大小.</param>
/// <param name="zip">导出目标流.</param>
/// <param name="partNameFormat">分页文件命名格式 {0} 代表编号，必须至少包含一个 {0}，否则会出现命名冲突..</param>
/// <param name="callback">导出回调.</param>
/// <returns>this, 以支持链式操作.</returns>
public Exporter ExportToExcelByPage(IExportable exportable, string name, int pageSize, ZipOutputStream zip, string partNameFormat, ExportCallback callback)
{
var paged = new PagedExportable(exportable as IExportHeader, exportable, pageSize);
return(ExportToExcelByPage(paged, name, zip, partNameFormat, callback));
}
/// <summary>
/// 导出到 Excel.
/// </summary>
/// <param name="exportable">可导出对象.</param>
/// <param name="name">导出目标 sheet 的名称.</param>
/// <param name="output">输出流.</param>
/// <param name="callback">导出回调.</param>
/// <returns>this, 以支持链式操作.</returns>
public Exporter ExportToExcel(IExportable exportable, string name, Stream output, ExportCallback callback)
{
try
{
this.NewExcel().NewSheet(name);
var header = exportable as IExportHeader;
if (header != null)
{
this.UnionHeader(header, callback);
}
this.Union(exportable, callback)
.WriteTo(output);
}
finally
{
this.CloseExcel();
}
return(this);
}
/// <summary>
/// 导出到 Excel.
/// </summary>
/// <param name="exportable">可导出对象.</param>
/// <param name="name">导出目标 sheet 的名称.</param>
/// <param name="fileName">输出文件.</param>
/// <param name="callback">导出回调.</param>
/// <returns>this, 以支持链式操作.</returns>
public Exporter ExportToExcel(IExportable exportable, string name, string fileName, ExportCallback callback)
{
using (var fs = new FileStream(fileName, FileMode.Create))
{
return(this.ExportToExcel(exportable, name, fs, callback));
}
}
/// <summary>
/// 导出到 Excel.
/// </summary>
/// <param name="table">是导出的 DataTable.</param>
/// <param name="name">导出目标 sheet 的名称.</param>
/// <param name="fileName">输出文件.</param>
/// <param name="callback">导出回调.</param>
/// <returns>this, 以支持链式操作.</returns>
public Exporter ExportToExcel(DataTable table, string name, string fileName, ExportCallback callback)
{
IExportable exportable = new DataTableExportable(table);
return(ExportToExcel(exportable, name, fileName, callback));
}
///// <summary>
///// 导出到 Excel.
///// </summary>
///// <param name="dataGridView">是导出的 DataGridView.</param>
///// <param name="name">导出目标 sheet 的名称.</param>
///// <param name="fileName">输出文件.</param>
///// <param name="callback">导出回调.</param>
///// <returns>this, 以支持链式操作.</returns>
//public Exporter ExportToExcel(DataGridView dataGridView, string name, string fileName, ExportCallback callback)
//{
// IExportable exportable = new DataGridViewExportable(dataGridView);
// return ExportToExcel(exportable, name, fileName, callback);
//}
/// <summary>
/// 导出到 Excel.
/// </summary>
/// <param name="view">是导出的 DataView.</param>
/// <param name="name">导出目标 sheet 的名称.</param>
/// <param name="fileName">输出文件.</param>
/// <param name="callback">导出回调.</param>
/// <returns>this, 以支持链式操作.</returns>
public Exporter ExportToExcel(DataView view, string name, string fileName, ExportCallback callback)
{
IExportable exportable = new DataViewExportable(view);
return(ExportToExcel(exportable, name, fileName, callback));
}
/// <summary>
/// 将 exportable 中的数据连接到当前 sheet 中
/// 调用顺序: NewExcel() -> NewSheet() -> Union() -> WriteTo() -> CloseExcel().
/// </summary>
/// <param name="exportable">可导出对象.</param>
/// <param name="callback">导出回调.</param>
/// <returns>this, 以支持链式操作.</returns>
public Exporter DoUnion(IExportable exportable, ExportCallback callback)
{
//ExportCallback exportCallback = callback;
var context = this._context;
if (context == null)
{
throw new Exception("请先调用 NewExcel()");
}
var sheet = context.Sheet;
if (sheet == null)
{
throw new Exception("请先调用 NewSheet()");
}
int rowIndex = 0, y = context.StartRowIndex;
context.CellType = CellType.DataCell;
do
{
IRow row = null;
int columnIndex = 0, x = 0;
context.RowIndex = rowIndex;
while (true)
{
context.Reset();
context.ColumnIndex = columnIndex;
if (exportable.NextCell(rowIndex, columnIndex, context))
{
if (callback != null)
{
callback(context);
}
if (context.IsValid)
{
// 创建单元格
if (row == null)
{
row = sheet.CreateRow(y++);
}
var cell = row.CreateCell(x++);
// 设置单元格
SetCell(cell, context);
}
++columnIndex;
}
else
{
break;
}
}
++rowIndex;
} while (exportable.NextRow(rowIndex));
context.StartRowIndex = y;
return(this);
}
