Is it possible to ignore Excel warnings when generating spreadsheets using EPPlus?

Question

I\'m storing mix of numeric and non-numeric values in a single column in spreadsheet using C# and EPPlus. When I open spreadsheet with Excel it shows green triangles in the

Answer 1

You can check if your value is integer, convert it to int and assign number to cell's value. Then it will be saved as number, not string.

public static void SetValueIntOrStr(this ExcelRangeBase range, object value)
{
    string strVal = value.ToString();
    if (!String.IsNullOrEmpty(strVal))
    {
        double dVal;
        int iVal;

        if (double.TryParse(strVal, out dVal))
            range.Value = dVal;
        else if (Int32.TryParse(strVal, out iVal))
            range.Value = iVal;
        else
            range.Value = strVal;
    }
    else
        range.Value = null;
}