WPF RadGridView默认日期值为空值

看看如何实施 WPF Value Converters .

<telerik:GridViewDataColumn DataMemberBinding="{Binding DateColumn, Converter={StaticResource MyDateConverter}" IsReadOnly="True">

转换器:

public class MyDateConverter:IValueConverter  
{  
    public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)  
    {  
        if (value is DateTime)
        {
            DateTime test = (DateTime) value;
            if (test.Year > 1900) // If year is greater than 1900 then display
            {
                string date = test.ToString("d/M/yyyy"); // Your date format
                return date;
            }
        }

        return string.Empty;
    }  

    public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)  
    {  
        throw new NotImplementedException();  
    }  
}  

尝试转换默认值。此处DateTime.MinValue是默认值

if (EndDate == DateTime.MinValue)
{
    Response.Write("Null");
}