C#：EXCEL列名、列序号之间互相转换
EXCEL的列名与列序号 之前的关系如下
| A | 1 |
| B | 2 |
| C | 3 |
| D | 4 |
| E | 5 |
| F | 6 |
| G | 7 |
| H | 8 |
| I | 9 |
| J | 10 |
| K | 11 |
| L | 12 |
| M | 13 |
| N | 14 |
| O | 15 |
| P | 16 |
| Q | 17 |
| R | 18 |
| S | 19 |
| T | 20 |
| U | 21 |
| V | 22 |
| W | 23 |
| X | 24 |
| Y | 25 |
| Z | 26 |
| AA | 27 |
| AB | 28 |
/// <summary>/// 根据给的EXCEL列序号，得出列名字母/// </summary>/// <param name="iColNum">序号</param>/// <returns>列名</returns>public string ColNum2Name(int iColNum){string result = "";if (iColNum < 1 || iColNum > 16384){throw new Exception("列号超出范围");}while (iColNum > 0){iColNum--; //列号是从1开始的，字母从0开始的result = (char)('A' + iColNum % 26) + result;iColNum /= 26;}return result;}/// <summary>/// 根据给出的EXCEL列名，转换成列序号/// </summary>/// <param name="sColName">列名</param>/// <returns>序号</returns>public int ColName2Num(string sColName){int result = 0;for (int i = 0; i < sColName.Length; i++){result *= 26;result += sColName[i] - 'A' + 1;}return result;}