如何从索引实现列自我命名？
我希望能够实例化我的Cell类，同时用“A”，“B”，“C”等命名单元实例，就像在Excel电子表格中一样。
我有我的Cell类如下所示：
public class Cell { public Cell(Range nativeCell) { NativeCell = nativeCell; } public Range NativeCell { get; private set; } }
和我的Sheet类：
public class Sheet { private IDictionary<string, Cell> _cells; public Sheet(Worksheet nativeSheet) { NativeSheet = nativeSheet; _cells = new Dictionary<string, Cell>(); for (int rowIndex = 1; rowIndex <= NativeSheet.Rows.Count; ++rowIndex) for (int colIndex = 1; colIndex <= NativeSheet.Columns.Count; ++colIndex) { ICell newCell = new Cell(NativeSheet.Cells(rowIndex, colIndex)); newCell.Name = ?? // This name should look like "A1", "B1", "AA3", "CB20", etc. Cells.Add(newCell.Name, newCell); } } public IDictionary<string, Cell> Cells { get { return _cells; } } public Worksheet NativeSheet { get; private set; } }
一旦遇到最后一个字母“Z”，我需要根据字母字母来生成一个名字，然后将它们翻一番和三倍。 该algorithm将不得不生成字母，我将连接rowIndex值，这将导致这种命名策略，如Excel。
这些信件将是：
A, B, C, D...Z, AA, AB, AC...AZ, BA, BB, BC...BZ, CA...XAA, XAB, XAC...
虽然我们清楚地知道colIndex值1将明确指定列“A”，值2 =“B”，值3“C”等。
我们的问题特别是当我们把字母加倍时。
你有什么想法，我怎样才能以最简单的forms实现这一点？
谢谢！ =）
这是这个 将列索引转换为Excel列名称
不应该难以recursion，并给你正是你所需要的。 我希望这有帮助。
这个function会为你做。 这是在VB.NET，但我相信你可以将它移植到C＃，如果需要的话。
我已经用C＃版本的函数更新了答案。
VB.NET
''' <summary>Returns the Excel-style name of the column from the column index.</summary> ''' <param name="colIndex">The column index.</param> Function GetColumnName(ByVal colIndex As Integer) As String If colIndex < 1 Then Throw New ArgumentException("Column number must be greater or equal to 1.") Dim result As New List(Of String) 'letter codes start at Chr(65)' Do While colIndex > 0 'reduce the column number by 1 else the 26th column (Z) will become 0 (@) ' 'add 65 to the result and find the Chr() value. ' 'insert the character at position 0 of the character list ' 'integer divide by 26 to remove the column from the stack and repeat till ' 'there are no columns in the stack. ' result.Insert(0, Chr(65 + CInt((colIndex - 1) Mod 26))) colIndex = (colIndex - 1) \ 26 Loop Return String.Join("", result.ToArray) End Function
C＃
/// <summary>Returns the Excel-style name of the column from the column index.</summary> /// <param name="colIndex">The column index.</param> static string GetColumnName(int colIndex) { if (colIndex < 1) throw new ArgumentException("Column number must be greater or equal to 1."); var result = new List<char>(); //letter codes start at Chr(65)' while (colIndex > 0) { //reduce the column number by 1 else the 26th column (Z) will become 0 (@) //add 65 to the result and find the Chr() value. //insert the character at position 0 of the char list //integer divide the column index by 26 to remove the last calculated column //from the stack and repeat till there are no columns in the stack. result.Insert(0, Microsoft.VisualBasic.Strings.Chr(65 + Convert.ToInt32((colIndex - 1) % 26))); colIndex = (int)((colIndex-1)/ 26); } return new string(result.ToArray()); }
我testing了这个列索引1000，它的工作没有失败。 希望对你有帮助。