Get Merged Cell Area with EPPLus

问题:

I'm using EPPlus to read excel files.

I have a single cell that is part of merged cells. How do I get the merged range that this cell is part of?

For example:

Assume Range ("A1:C1") has been merged.

Given Range "B1" it's Merge property will be true but there isn't a way to get the merged range given a single cell.

How do you get the merged range?

I was hoping for a .MergedRange which would return Range("A1:C1")

回答1:

There is no such property out of the box but the worksheet has a MergedCells property with an array of all the merged cell addresses in the worksheet and a GetMergeCellId() method which will give you the index for a given cell address.

We can therefore combine these into a little extension method you can use to get the address. Something like this:

public static string GetMergedRangeAddress(this ExcelRange @this) {     if (@this.Merge)     {         var idx = @this.Worksheet.GetMergeCellId(@this.Start.Row, @this.Start.Column);         return @this.Worksheet.MergedCells[idx-1]; //the array is 0-indexed but the mergeId is 1-indexed...     }     else     {         return @this.Address;     } } 

which you can use as follows:

using (var excel = new ExcelPackage(new FileInfo("inputFile.xlsx"))) {     var ws = excel.Workbook.Worksheets["sheet1"];     var b3address = ws.Cells["B3"].GetMergedRangeAddress();  } 

(Note that in the event that you use this method on a multi-celled range it will return the merged cell address for the first cell in the range only)

回答2:

You can get all merged cells from worksheet, hence you can find the merged range a specific cell belongs to using the following:

 public string GetMergedRange(ExcelWorksheet worksheet, string cellAddress)     {         ExcelWorksheet.MergeCellsCollection mergedCells = worksheet.MergedCells;         foreach (var merged in mergedCells)         {             ExcelRange range = worksheet.Cells[merged];             ExcelCellAddress cell = new ExcelCellAddress(cellAddress);             if (range.Start.Row<=cell.Row && range.Start.Column <= cell.Column)             {                 if (range.End.Row >= cell.Row && range.End.Column >= cell.Column)                 {                     return merged.ToString();                 }             }         }         return "";     } 

Update:

Turns out that there is a much easier way using EPPLUS, just do the following:

var mergedadress = worksheet.MergedCells[row, column]; 

For example, if B1 is in a merged range "A1:C1":

 var mergedadress = worksheet.MergedCells[1, 2]; //value of mergedadress will be "A1:C1". 

2 is the column number because B is the 2nd column.

文章来源: Get Merged Cell Area with EPPLus