How to convert numeric digits to arabic/persian digit using C#

Hi nedash,

Refer the below code. As per your requirement

<asp:Label ID="lblKol" runat="server" CssClass="Mkol3">12345</asp:Label>

Code

protected void Page_Load(object sender, EventArgs e)
{
    string value = lblKol.Text.Trim();
    char[] charArray = value.ToCharArray();
    Array.Reverse(charArray);
    lblKol.Text = toPersianNumber(new string(charArray));
}

private string toPersianNumber(string input)
{
    string[] persian = new string[10] { "۰", "۱", "۲", "۳", "۴", "۵", "۶", "۷", "۸", "۹" };
    for (int j = 0; j < persian.Length; j++)
    {
        input = input.Replace(j.ToString(), persian[j]);
    }
    return input;
}

Output

12345 -> ۵۴۳۲۱