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How do I search for specific text in an Excel worksheet and get the address that the text is occupying using C#?
public string searchExcel(string findThis)
{
    Excel.Application xlApp;
    Excel.Workbook xlWorkBook;
    Excel.WorkSheet xlWorkSheet;
    object misvalue;

    //This part will open the Excel document.
    misValue = System.Reflection.Missing.Value;
    xlApp = new Excel.ApplicationClass();
    xlWorkBook = xlApp.Workbooks.Open("C:\temp2\excelDocument.xlsm",
    0, true, 5, "", "", true, Microsoft.Office.Interop.Excel.XlPlatform.xlWindows,
    "t", false, false, 0, true, 1, 0);


    //Search and get address of cell


    //This part will close the Excel document
    xlWorkBook.Close(true, misValue, misvalue);
    xlApp.Quit();

    releaseObject(xlWorkSheet);
    releaseObject(xlWorkBook);
    releaseObject(xlApp);

    xlWorkSheet = null;
    xlWorkBook = null;
    xlApp = null;
}

private void releaseObject(object obj)
{
    try
    {
        System.Runtime.Interopservices.Marshal.ReleaseComObject(obj);
        obj = null;
    }
    catch(Exception e)
    {
        obj = null;
        MessageBox.Show("Unable to release the object " + e.ToString());
    }
    finally
    {
        GC.Collect();
    }
}

var app = (Excel.Application)Marshal.GetActiveObject("Excel.Application");
        var wb = app.ActiveWorkbook;
        var ws = wb.Worksheets[1] as Excel.Worksheet;
        var cells = ws.Cells;
        var match = cells.Find("apples", LookAt:=Excel.XlLookAt.xlPart) as Excel.Range;
        var matchAdd = match != null ? match.Address : null;

xlWorksheet = xlWorkBook.Worksheets[1] as Excel.Worksheet;
        Excel.Range cells = ws.Cells;
        Excel.Range match = cells.Find("apples", LookAt:=Excel.XlLookAt.xlPart) as Excel.Range;

        string matchAdd = match != null ? match.Address : null;

        if (match != null) releaseObject(match);
        releaseObject(cells);