I have an Excel worksheet with some data. I also have a List of the column headers of the worksheet. The headers in the list are in a different order than the headers in the worksheet, and I need to reorder the Excel worksheet's columns to be the same order as the list.
List<string> dataset1Variables = new List<string>() { "Variable1", "Variable2", "Variable3", "Variable4" };
The headers of my Excel sheet may look like this:
Variable 3 | Variable 1 | Variable 4 | Variable 2
I have come across this code to shift columns but this is only for moving 1 column to a specific location. The list might be completely mixed up so I would need to shift many columns.
Excel.Range copyRange = xlWs.Range["C:C"];
Excel.Range insertRange = xlWs.Range["A:A"];
insertRange.Insert(Excel.XlInsertShiftDirection.xlShiftToRight,
copyRange.Cut());
What would be the best approach for doing this? Preferably using Interop.
If you have an empty row right above your worksheet with data, you can add matching formula right above headers. In below assuming your list is on Sheet2 range B2:B5 and your data headers start on Sheet1 range A2:D2
Excel.Workbook myBook = xlApp.Workbooks.Open(#"path\excel.xlsx");
Excel.Worksheet ws = myBook.Worksheets[1];
// You can use all dynamic ranges instead
// Excel.Range xlRng = ws.Range[ws.Cells[yourRow, firsColumn], ws.Cells[yourRow, lastColumn]];
Excel.Range xlRng = ws.Range[ws.Cells[1, 1], ws.Cells[1, 4]]; // ws.Range["A1:D1"];
xlRng.FormulaR1C1 = "=MATCH(R[-1]C,Sheet2!R2C2:$R5C2,0)";
// Below is how you can get full address for your list if it's in different workbook and replace Sheet2!R2C2:$R5C2 with rangeFullAddress
// string rangeFullAddress = xlRng.Address[true,true,Excel.XlReferenceStyle.xlR1C1,true];
xlRng.Calculate();
xlRng.Value = xlRng.Value;
After this you can just sort your data using Excel Sort by 1st row. After sorting your 1st row it would look like this: 1, 2, 3, 4. Then clear data on 1st row ws.Range["A1:D1"].Clear();.
Your sort key would be Key1: ws.Range["A1:D1"], here is c# sort example using c# to sort a column in excel only change Excel.XlSortOrientation and adjust for your range.
There are other ways to sort but this way you'll keep individual formats, comments of each cell within your data
I missed 1 important detail - that your list is not in Excel sheet, but you can add it to Excel, perhaps in temporary workbook or right on the same sheet:
object [,] columnHeaders = new object[3,0]; // or object[0,3]; if you'd like to add into 1 row
columnHeaders[0, 0] = "Variable1";
columnHeaders[1, 0] = "Variable2";
columnHeaders[2, 0] = "Variable3";
columnHeaders[3, 0] = "Variable4";
xlRng.FormulaR1C1 = columnHeaders; // xlRng would be in the above Sheet2!R2C2:$R5C2
Related
I have an Excel worksheet which has 50 Rows and 38 columns "Filled" with actual data but when I try to get the .UsedRange I am getting More than 1025 Rows and 250 columns as Used range! Please let me know how can I get only actual Used ranges with filled data and retrive the actual range data using Spreadsheetgear lib? I tried something like, but when user added some column, it's does not work.
var workbook = Factory.GetWorkbook(filePath);
var worksheet = workbook.Worksheets[0];
var cells = worksheet.UsedRange;
var headerCount = 0;
// get columns size
for (var columnCount = 0; columnCount <= range.ColumnCount; ++columnCount)
{
if (columnCount > headers.Length && string.IsNullOrEmpty(range[HeaderRow, columnCount].Text))
{
headerCount = columnCount - 1;
break;
}
}
SpreadsheetGear (and Excel itself) will include cells into the UsedRange that are empty but have formatting of some kind. For instance, if cell ABC123 has a custom NumberFormat, Font color or similar, the UsedRange will include that cell, thereby potentially blowing up your UsedRange A1:ABC123 even if the actual "value-populated" or "filled" portion of the worksheet is much smaller.
If this is a problem and you need to only include the portion of a sheet that is actually populated with cell values, below is one possible routine you might be able to use to only include cells that have cell values of some kind. It is written as an extension method off of IWorksheet to make utilization of it easier, and includes a bool flag that you can pass in so as to return either the "normal" UsedRange (including cells with other types of formatting) or the "altered" UsedRange discussed here:
public static class SGExtensionMethods
{
public static IRange GetUsedRange(this IWorksheet worksheet, bool ignoreEmptyCells)
{
IRange usedRange = worksheet.UsedRange;
if (!ignoreEmptyCells)
return usedRange;
// Find last row in used range with a cell containing data.
IRange foundCell = usedRange.Find("*", usedRange[0, 0], FindLookIn.Formulas,
LookAt.Part, SearchOrder.ByRows, SearchDirection.Previous, false);
int lastRow = foundCell?.Row ?? 0;
// Find last column in used range with a cell containing data.
foundCell = usedRange.Find("*", usedRange[0, 0], FindLookIn.Formulas,
LookAt.Part, SearchOrder.ByColumns, SearchDirection.Previous, false);
int lastCol = foundCell?.Column ?? 0;
// Return a new used range that clips of any empty rows/cols.
return worksheet.Cells[worksheet.UsedRange.Row, worksheet.UsedRange.Column, lastRow, lastCol];
}
}
A couple additional notes about this approach. It does generally take into account hidden rows or columns--meaning hidden rows or columns that have cell values will be included in the UsedRange. One exception / edge-case to this inclusion of hidden rows or columns is if AutoFilters is enabled on the worksheet. This puts the worksheet in a special "mode" that excludes hidden rows from search results. So if AutoFilters is enabled (in such cases IWorksheet.AutoFilterMode will be true), you may not be able to rely on this approach if the last row(s) or column(s) of the AutoFiltered range could possibly have been filtered out.
I recently figured out how to write cell values in a range:
Excel.Range rng = (Excel.Range)xlWorkSheet.Range[xlWorkSheet.Cells[1, 1], xlWorkSheet.Cells[10, 10]];
rng.Value = new string[,] { ... };
which speeds up my app enourmous, but I would also like to be able to set a whole range of cell comments! I only found the possibility to make a comment on a range of cells. A single comment. But it does not seem that something for it exists in the api.
You can not set more than one cell comment at once, but you can copy comment from one cell and paste it to multiple cells:
var a1 = xlWorkSheet.Range("A1")
a1.ClearComments(); // just in case
a1.AddComment("some comment");
a1.Copy();
a1.Resize(10, 10).PasteSpecial(Excel.XlPasteType.xlPasteComments);
I have a Word.Chart whose underlying worksheet I am populating with data from C#.
My problem is however, that the selected dataset in the worksheet contains just the default selection (eg. 5x4 cells or sg like that), and not ALL the data which I entered.
If the object were an Excel chart, I could do
Excel.Range rangeBegin = ws.Cells[1, 1];
Excel.Range rangeEnd = ws.Cells[xAxisContents.Count + 1, feeds.Count + 1];
Excel.Range chartRange = ws.get_Range(rangeBegin, rangeEnd);
wordChart.SetSourceData(chartRange);
However, the Word.Chart's SetSourceData method only accepts a string, and if I call it with an arbitrary range (just for testing), eg. wordChart.SetSourceData("A1:C3"), it fails with a ComException(E_FAIL).
I have also found this code on a Microsoft blog:
Excel.Range tblRng = dataSheet.get_Range("A1", "B5");
Excel.ListObject tbl = dataSheet.ListObjects["Table1"];
tbl.Resize(tblRng);
which I think is meant to resize the selected dataset to the size of the worksheet. This would also be perfect for me, however, "Table1" is reported as an unknown index (maybe because I am using a non-English version of Word.)
What should I do to select the appropriate dataset?
I have an Excel file with one column which is filled with numbers. I would like to be read the numbers from this column into an array in C#. How can I do that?
The easiest way is probably to use the Excel ODBC driver. This allows you to use OdbcConnection to read the worksheet into a DataTable. You can then iterate over the table's Rows collection, copying the values into a list or array.
You can use Excel Interop and do something along the lines of:
Excel.Range firstCell = excelWorksheet.get_Range("A1", Type.Missing);
Excel.Range lastCell = excelWorksheet.get_Range("A10", Type.Missing);
Excel.Range worksheetCells = excelWorksheet.get_Range(firstCell, lastCell);
var cellValues = worksheetCells.Value2;
You should get an array of objects (1-based index), and can cast the contents using (for instance) Convert.ToDouble().
SpreadsheetGear for .NET can do it. Below is some C# source. Note that the SpreadsheetGear API is similar to the Excel API, so the code below could be adapted to Excel.
using System;
using SpreadsheetGear;
namespace Program
{
class Program
{
static void Main(string[] args)
{
// Load a workbook from disk and get the first worksheet.
var workbook = SpreadsheetGear.Factory.GetWorkbook(#"C:\tmp\Numbers.xlsx");
// Allocate a list of doubles to store the number.
var numbers = new System.Collections.Generic.List<double>();
var worksheet = workbook.Worksheets[0];
// Assuming that column A is the column with the numbers...
var columnA = worksheet.Cells["A:A"];
var usedRange = worksheet.UsedRange;
// Limit the cells we look at to the used range of the sheet.
var numberCells = usedRange.Intersect(columnA);
// Get the numbers into the list.
foreach (IRange cell in numberCells)
{
object val = cell.Value;
if (val is double)
numbers.Add((double)val);
}
// Write the numbers to the console.
foreach (double number in numbers)
Console.WriteLine("number={0}", number);
}
}
}
You can download the free SpreadsheetGear trial here if you want to try it yourself.
Disclaimer: I own SpreadsheetGear LLC
I'm working with an excel object in c#. I want to auto-fit the columns, but like this: I want the columns' width to be 5 bigger than what the AutoFit method set.
How can I get the width after AutoFit() is used?
How can I make the columns 5 bigger than this width?
If you wish to use the Selection object and have IntelliSense with early binding, you need to cast the Selection object to a Range first:
Excel.Range selectedRange = (Excel.Range)myExcelApp.Selection;
selectedRange.Columns.AutoFit();
foreach (Excel.Range column in selectedRange.Columns)
{
column.ColumnWidth = (double)column.ColumnWidth + 5;
}
-- Mike
Assuming that you are on cell A1 & have long text in it, following code will make the column Autofit and then increase the width by 5 characters.
Selection.Columns.Autofit
Selection.Columns(1).ColumnWidth = Selection.Columns(1).ColumnWidth + 5
Try to loop through your rows to get the text length of it:
var row = 1;
ws.Column(1).AutoFit(ws.Cells[row, 1].Text.Length + 5);
Where ws is your Worksheet:
var pck = new ExcelPackage();
var ws = pck.Workbook.Worksheets.Add("Plan1")
Try Like this,
ExcelWorksheet ws = pck.Workbook.Worksheets.Add("Sheet1");
//Load the datatable into the sheet, starting from cell A1. Print the column names on row 1
ws.Cells["A1"].LoadFromDataTable(data_table, true);
//Set full Sheet Auto Fit
ws.Cells[1, 1, data_table.Rows.Count, data_table.Columns.Count].AutoFitColumns();