Gembox spreedsheet excel file upload

Question

I want to read excel file using gembox like first row as header to check weather required column are present or not.

Answer 1

You can find the reading example here.
Also, here is another example of how you can read just the first row:

var workbook = ExcelFile.Load("Sample.xlsx");
var worksheet = workbook.Worksheets[0];
var firstRow = worksheet.Rows[0];

foreach (var cell in firstRow.AllocatedCells)
{
    Console.WriteLine(cell.Name);
    Console.WriteLine(cell.Value);
    Console.WriteLine("---");
}

I hope this helps.

UPDATE

Another attempt to guess what exactly is requested here:

string[] expectedColumns = new string[] { "Column 1", "Column 2", "Column 3" };

var workbook = ExcelFile.Load("Sample.xlsx");
var worksheet = workbook.Worksheets[0];
var firstRow = worksheet.Rows[0];

string[] actualColumns = firstRow.AllocatedCells
    .Select(cell => cell.Value != null ? cell.Value.ToString() : string.Empty)
    .ToArray();

for (int i = 0; i < expectedColumns.Length; i++)
    if (expectedColumns[i] != actualColumns[i])
        throw new Exception("Unexpected column name detected!");

Note, Select and ToArraymethods are provided by System.Linq.