How to read single Excel cell value

I have excel file with sheet1 that has a value I need to read on row 2 and column 10. Here is my code.

Excel.Workbook excelWorkbook = excelApp.Workbooks.Open(workbookPath, 0, false, 5, "", "", false, Excel.XlPlatform.xlWindows, "", true, false, 0, true, false, false);
Excel.Sheets excelSheets = excelWorkbook.Worksheets;
string currentSheet = "Sheet1";
Excel.Worksheet excelWorksheet = (Excel.Worksheet)excelSheets.get_Item(currentSheet);
var cell = (Excel.Range)excelWorksheet.Cells[10, 2];

After getting cell object which is Excel.Range, I do not know how to read the content of that cell. I tried converting it into array and looping over it and I tried converting to string array etc. I am sure it is very simple. Is there a direct way to get just one cell value that is string?

You need to cast it to a string (not an array of string) since it's a single value.

var cellValue = (string)(excelWorksheet.Cells[10, 2] as Excel.Range).Value;

using Microsoft.Office.Interop.Excel;

string path = "C:\\Projects\\ExcelSingleValue\\Test.xlsx ";

Application excel = new Application();
Workbook wb = excel.Workbooks.Open(path);
Worksheet excelSheet = wb.ActiveSheet;

//Read the first cell
string test = excelSheet.Cells[1, 1].Value.ToString();

wb.Close();

This example used the 'Microsoft Excel 15.0 Object Library' but may be compatible with earlier versions of Interop and other libraries.

 //THIS IS WORKING CODE                        
 Microsoft.Office.Interop.Excel.Range Range_Number,r2;
 Range_Number = wsheet.UsedRange.Find("smth");
 string f_number="";
                                
 r2 = wsheet.Cells;

 int n_c = Range_Number.Column;
 int n_r = Range_Number.Row;
 var number = ((Range)r2[n_r + 1, n_c]).Value;

 f_number = (string)number;

It is better to use .Value2() instead of .Value(). This is faster and gives the exact value in the cell. For certain type of data, truncation can be observed when .Value() is used.

Please try this. Maybe this could help you. It works for me.

string sValue = (range.Cells[_row, _column] as Microsoft.Office.Interop.Excel.Range).Value2.ToString();
//_row,_column your column & row number 
//eg: string sValue = (sheet.Cells[i + 9, 12] as Microsoft.Office.Interop.Excel.Range).Value2.ToString();
//sValue has your value

The issue with reading single Excel Cell in .Net comes from the fact, that the empty cell is evaluated to a Null. Thus, one cannot use its .Value or .Value2 properties, because an error shows up.

To return an empty string, when the cell is Null the Convert.ToString(Cell) can be used in the following way:

Excel.Workbook wkb = Open(excel, filePath);
Excel.Worksheet wk = (Excel.Worksheet)excel.Worksheets.get_Item(1);

for (int i = 1; i < 5; i++)
{
    string a = Convert.ToString(wk.Cells[i, 1].Value2);
    Console.WriteLine(a);
}

> You have two ways to get the value

using xl = Microsoft.Office.Interop.Excel;

// 1. Using Cells with numbered reference
string cellValue = (excelWorksheet.Cells[10, 2] as xl.Range).Text.ToString();

// 2. Using Range with address reference
string cellValue = excelWorksheet.Range["J2"].Text.ToString();

Here's a solution that may work better in the case you are referencing objWorksheet.UsedRange.

Excel.Worksheet mySheet = ...(load a workbook, etc);
Excel.Range myRange = mySheet.UsedRange;
var values = (myRange.Value as Object[,]);
int rowNumber = 3, columnNumber = 5;
string cellValue = Convert.ToString(values[rowNumber, columnNumber]);

You can run into a problem when reading cell values from an excel Worksheet. If the cell is empty .Value (or .Value2) will throw null. If you want to eliminate that problem, you need to check if the result is null. something like this:

string strcelltext = Convert.ToString(mySheet.get_Range("A1", "A1").Value2) ?? "";