C＃：获取ExcelPackage的行数/列数

我需要从Excel电子表格读取和写入数据。 有没有一种方法来找出有多less行/列某个工作表使用ExcelPackage？ 我有以下代码：

FileInfo newFile = new FileInfo(@"C:\example.xlsx"); using (ExcelPackage xlPackage = new ExcelPackage(newFile)) { ExcelWorksheet worksheet = xlPackage.Workbook.Worksheets[1]; } 

我需要遍历这个工作表中的每个单元格，并将其吐到一个相当大的表中，但是我不想打印出空白单元格或得到exception。 有没有类似worksheet.rowNum或colNum的方法？

Answer 1

您可以使用ExcelPackage（EPPlus.dll版本3.0.0.2）获取行数和列数，如下所示：

  var rowCnt = worksheet.Dimension.End.Row; var colCnt = worksheet.Dimension.End.Column; 

Answer 2

这就是我所做的：

要获取工作簿上的值的数组：

 object[,] valueArray = sheet.Cells.GetValue<object[,]>(); 

得到的范围做到以下几点：

 int rangeMaxRows = sheet.Dimension.End.Row; int rangeMaxColumns = sheet.Dimension.End.Column; 

Answer 3

我将从UsedRange属性开始，然后对UsedRange的最后一行中的每个Cell执行Cell.End（xlUp）。 这应该会得到每个列的最后一个单元格，具有最大行索引的单元格是您真正使用的范围中的最后一个单元格。

UsedRange属性可能会出现错误，因为当单元格被清除但未删除时，UsedRange属性不会更新。 要使UsedRange属性再次有效，只需select最后一个单元格（所有空白单元格）之后的所有行和列，然后执行编辑 – >删除。

Answer 4

 int row = _excelSheet.Rows.CurrentRegion.EntireRow.Count; int col = _excelSheet.Columns.CurrentRegion.EntireColumn.Count; 

Answer 5

我只是做了下面的循环来解决这个问题。 只有在知道有多less列之前，它才能正常工作。 否则，将需要另一个循环迭代。

 int totalCells = 0; int totalRows = -1; do { totalRows++; } while (worksheet.Cell(totalRows + 1, 1).Value != @""); totalCells = totalRows * 12; 

Answer 6

我自己使用sheet.UsedRange，但注意到范围末尾的一些单元格是空白的，但仍包含在范围内。

这是有效的，但是为了提高效率，你可能会更好地从范围的最后一行开始观察，并计算回数据结束的位置（而不是从第一行开始的片段）。

  int count = 0; E.Range excelRange = sheet.UsedRange; object[,] valueArray = (object[,])excelRange.get_Value(E.XlRangeValueDataType.xlRangeValueDefault); if (valueArray.GetUpperBound(0) > 1) { for (int i = 0; i < valueArray.GetUpperBound(0) + 2; i++) { if (valueArray[i + 2, 1] == null) break; else count++; } } 

Answer 7

我用ExcelPackage库查找了一些网站。
此外，codeplex上的页面有一个问题 – 如何获得行数/列数？

似乎没有它的支持。 对不起，文档也不可用。
您必须迭代行/列（记住电子表格可以容纳的最大行/列）并检查单元格是否包含任何值。

看到这个链接 – http://web.archive.org/web/20110123164144/http://nayyeri.net/use-excelpackage-to-manipulate-open-xml-excel-files （原来的链接死了）

Answer 8

Epplus不支持usedrange，但可以使用usedrange.cs假设您已经下载了最新的EPPlus源代码，请对Worksheet.cs进行更改：使原始的一部分 。 然后创build一个名为UsedRange.cs的单独的cs文件，粘贴下面的代码并编译。

 namespace OfficeOpenXml { using System; using System.Collections.Generic; using System.Text; using OfficeOpenXml.Style; using System.Data; /// <summary> /// This class provides easy access to used range objects such as /// UsedRows, UsedColumns, UsedCells, UsedRow, UsedColumn etc. /// Authored by Mukesh Adhvaryu /// </summary> public sealed class UsedRange : ExcelRange,IEnumerable<UsedRange> { #region local variables int elementIndex=-1, cursor=-1, position=-1; UsedRangeElement element, parentElement; public const long MaxCells =(long) ExcelPackage.MaxRows * (long)ExcelPackage.MaxColumns; #endregion #region constructors /// <summary> /// this constructor is private because its accessibility outside can cause mess /// </summary> /// <param name="sheet"></param> /// <param name="element"></param> /// <param name="elementIndex"></param> /// <param name="cursor"></param> UsedRange(ExcelWorksheet sheet, UsedRangeElement element, int elementIndex, int cursor) : base(sheet) { this.element = element; switch (element) { case UsedRangeElement.Rows: case UsedRangeElement.Columns: case UsedRangeElement.Cells: parentElement = UsedRangeElement.Range; break; case UsedRangeElement.Row: parentElement = UsedRangeElement.Rows; break; case UsedRangeElement.Column: parentElement = UsedRangeElement.Columns; break; case UsedRangeElement.Cell: parentElement = UsedRangeElement.Cells; break; case UsedRangeElement.RowCell: parentElement = UsedRangeElement.Row; break; case UsedRangeElement.ColumnCell: parentElement = UsedRangeElement.Column; break; default: parentElement = 0; break; } this.elementIndex = elementIndex; this.cursor = cursor; SetRange(); } /// <summary> /// this constructor is private because its accessibility outside can cause mess /// </summary> /// <param name="sheet"></param> /// <param name="element"></param> /// <param name="elementIndex"></param> UsedRange(ExcelWorksheet sheet, UsedRangeElement element, int elementIndex) : this(sheet, element, elementIndex, -1) { } /// <summary> /// this constructor is private because its accessibility outside can cause mess /// </summary> /// <param name="sheet"></param> /// <param name="element"></param> UsedRange(ExcelWorksheet sheet, UsedRangeElement element) : this(sheet, element, -1, -1) { } /// <summary> /// this constructor used only to create cellcollection range /// since cellindex can be very large long value considering rows * columns =no of cells in worksheet /// this constructor is private because its accessibility outside can cause mess /// </summary> /// <param name="sheet"></param> /// <param name="cellIndex"></param> UsedRange(ExcelWorksheet sheet, long cellIndex) : base(sheet) { this.element = UsedRangeElement.Cell; this.parentElement = UsedRangeElement.Cells; CellToAddress(cellIndex); SetRange(); } #endregion #region indexers & properties /// <summary> /// Returns element at a given index /// </summary> /// <param name="index"></param> /// <returns></returns> public UsedRange this[int index] { get { if (index >= Count || index < 0) throw new IndexOutOfRangeException(); switch (element) { case UsedRangeElement.Rows: ValidateRow(index); return new UsedRange(_worksheet, UsedRangeElement.Row, index); case UsedRangeElement.Columns: ValidateCol(index); return new UsedRange(_worksheet, UsedRangeElement.Column, index); case UsedRangeElement.Cells: ValidateCell(index); return new UsedRange(_worksheet, index); case UsedRangeElement.Row: return new UsedRange(_worksheet, UsedRangeElement.RowCell, elementIndex, index); case UsedRangeElement.Column: return new UsedRange(_worksheet, UsedRangeElement.ColumnCell, elementIndex, index); default: return this; } } } /// <summary> /// Returns particular Cell at a given index /// </summary> /// <param name="index"></param> /// <returns></returns> public UsedRange this[long index] { get { ValidateCell(index); return new UsedRange(_worksheet, index); } } /// <summary> /// Returns count of elements in this collection /// </summary> public int Count { get { switch (element) { case UsedRangeElement.Rows: case UsedRangeElement.Column: return _toRow - _fromRow + 1; case UsedRangeElement.Columns: case UsedRangeElement.Row: return _toCol - _fromCol + 1; case UsedRangeElement.Cells: case UsedRangeElement.Range: return (_toRow - _fromRow + 1) * (_toCol - _fromCol + 1); default: return 1; } } } /// <summary> /// Returns type of this element collection /// </summary> public UsedRangeElement Element { get { return element; } } /// <summary> /// Returns parent type of element this collection /// </summary> public UsedRangeElement ParentElement { get { return parentElement; } } #endregion #region private methods /// <summary> /// Validates row index for row collection /// added by mukesh /// </summary> /// <param name="Row"></param> private void ValidateRow(int Row) { if (Row < 0 || Row > ExcelPackage.MaxRows) { throw (new ArgumentException("Row out of range")); } } /// <summary> /// Validates column index for column collection /// added by mukesh /// </summary> /// <param name="Col"></param> private void ValidateCol(int Col) { if (Col < 0 || Col > ExcelPackage.MaxColumns) { throw (new ArgumentException("Column out of range")); } } /// <summary> /// Validates cell index for cell collection /// added by mukesh /// </summary> /// <param name="Cell"></param> private void ValidateCell(long Cell) { if (Cell <0 || Cell > UsedRange.MaxCells) { throw (new ArgumentException("Cell out of range")); } } /// <summary> /// converts cell index into a point consists of row and column index. /// added by mukesh /// </summary> /// <param name="Cell"></param> private void CellToAddress(long Cell) { long rc = ((_worksheet._cells[_worksheet._cells.Count - 1] as ExcelCell).Row - (_worksheet._cells[0] as ExcelCell).Row) + 1; long cc = _worksheet._maxCol - _worksheet._minCol + 1; elementIndex = (int)(Cell / cc) + 1; cursor = (int)(Cell % cc) + 1; } /// <summary> /// This method is added by mukesh /// </summary> /// <returns> /// Excel Range Object /// </returns> ExcelRange SetRange() { switch (element) { case UsedRangeElement.Rows: case UsedRangeElement.Columns: case UsedRangeElement.Cells: return this[(_worksheet._cells[0] as ExcelCell).Row, _worksheet._minCol, (this._worksheet._cells[_worksheet._cells.Count - 1] as ExcelCell).Row, _worksheet._maxCol]; case UsedRangeElement.Row: return this[elementIndex + 1, _worksheet._minCol, elementIndex + 1, _worksheet._maxCol]; case UsedRangeElement.Column: return this[(_worksheet._cells[0] as ExcelCell).Row, elementIndex + 1, (_worksheet._cells[_worksheet._cells.Count - 1] as ExcelCell).Row, elementIndex + 1]; case UsedRangeElement.RowCell: case UsedRangeElement.Cell: return this[elementIndex + 1, cursor + 1]; case UsedRangeElement.ColumnCell: return this[cursor + 1, elementIndex + 1]; default: return this; } } #endregion #region internal static methods /// <summary> /// these static methods will be used to return row collection from worksheet /// added by mukesh /// </summary> /// <param name="sheet"></param> /// <returns></returns> internal static UsedRange RowCollection(ExcelWorksheet sheet) { return new UsedRange(sheet, UsedRangeElement.Rows); } /// <summary> /// these static methods will be used to return column collection from worksheet /// added by mukesh /// </summary> /// <param name="sheet"></param> /// <returns></returns> internal static UsedRange ColumnCollection(ExcelWorksheet sheet) { return new UsedRange(sheet, UsedRangeElement.Columns); } /// <summary> /// these static methods will be used to return cell collection from worksheet /// added by mukesh /// </summary> /// <param name="sheet"></param> /// <returns></returns> internal static UsedRange CellCollection(ExcelWorksheet sheet) { return new UsedRange(sheet, UsedRangeElement.Cells); } #endregion #region ienumerable implementation public new IEnumerator<UsedRange> GetEnumerator() { position = -1; for (int i = 0; i < Count; i++) { ++position; yield return this[i]; } } System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator() { return this.GetEnumerator(); } #endregion /// <summary> /// Determine Type of Used range element. /// Being used to return RowCollection, ColumnCollection, CellCollection or single Row, Column or Cell /// added by mukesh /// </summary> public enum UsedRangeElement { Range, Rows, Columns, Cells, Row, Column, Cell, RowCell, ColumnCell } } public sealed partial class ExcelWorksheet : XmlHelper { /// <summary> /// Provides access to a range of used rows /// </summary> public UsedRange UsedRows { get { return UsedRange.RowCollection(this); } } /// <summary> /// Provides access to a range of used columns. added by mukesh /// </summary> public UsedRange UsedColumns { get { return UsedRange.ColumnCollection(this); } } /// <summary> /// Provides access to a range of used cells. added by mukesh /// </summary> public UsedRange UsedCells { get { return UsedRange.CellCollection(this); } } /// <summary> /// UsedRange object of the worksheet. added by mukesh /// this range contains used Top left cell to Bottom right. /// If the worksheet has no cells, null is returned /// </summary> } }