Transpose values in excel using C#

Question

I saw this link - C# Transpose() method to transpose rows and columns in excel sheet in stackoverflow and this is what I am trying to do. But the guy is pretty unhelpful in the

Answer 1

This was asked a long time ago but I will let my sollution anyway.

Refs:

using Microsoft.Office.Interop.Excel;
using Excel = Microsoft.Office.Interop.Excel;

The trick here is to get the _Application Variable

in case you are using VSTO ADDIN with Workbook you can do like this:

var app = Globals.ThisWorkbook.Parent as _Application;

For other kind of project do like this:

_Application app2 = new Excel.Application();

My sample (sheet1 is my worksheet):

        var sheet1 = Globals.Planilha1;
        var arr = new string[] 
        {
            "test1",
            "test2",
            "test3",
            "test4",
            "test5",
            "test6",
        };
        
        // For VSTO ADDINS with Workbook
        //var app = Globals.ThisWorkbook.Parent as _Application;

        // For any kind of Excel Interop project
        _Application app = new Excel.Application();

        sheet1.Range["A1:A" + arr.Length].Value = app.WorksheetFunction.Transpose(arr);

The Transpose function can only deal with arrays, lists won't work.

Just place the array inside the app.WorksheetFunction.Transpose function and it will work pretty well.

Output: