PDFOffice_Windows_exe/PDF Office/DataConvert/FirstCharacterConverter.cs

using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Data;

namespace PDF_Master.DataConvert
{
      public class FirstCharacterConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            if (value == null)
            {
                return " ";
            }
            else
            { 
                string firstCharacter=" ";
                string stringValue = value.ToString();
                if (!string.IsNullOrEmpty(stringValue) && value.ToString().Length >= 1)
                {
                    firstCharacter = stringValue.Substring(0, 1);
                }
                return firstCharacter;
            }
        }

        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {

            throw new NotImplementedException();
        }
    }
}