我可以在属性上使用属性来告诉DataGridView如何格式化列吗？

Question

关于这个问题的一点点,如果我有这个课:

private class MyClass {
  [DisplayName("Foo/Bar")]
  public string FooBar { get; private set; }
  public decimal Baz { get; private set; }
}

我想List<MyClass>在a DataGridView(显示自动生成的列)中显示一个最简单的方法,将Baz列显示格式化为货币？

是否有一个我可以使用的属性,就像我正在使用的那样DisplayName,或者在创建列后我是否必须弄乱它们？

Answer 1

我知道它不完美,但你可以添加另一个名为CurrencyBaz的属性,它基本上会返回格式化的Baz,然后将其绑定到网格而不是真正的Baz.

所以这样的事情.

private class MyClass {
  [DisplayName("Foo/Bar")]
  public string FooBar { get; private set; }
  [Browsable(False)]
  public decimal Baz { get; private set; }
  [DisplayName("Baz")]
  public CurrencyBaz
  {
        get { return string.Format(Baz, "C2"); }
  }
}

Answer 2

TypeConverterAttribute - 就像是:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Globalization;
using System.Windows.Forms;
static class Program
{
    [STAThread]
    static void Main()
    {
        Application.EnableVisualStyles();
        Application.Run(new Form { Controls = {
            new DataGridView {
                Dock = DockStyle.Fill,
                DataSource = new List<MyClass> {
                    new MyClass { FooBar = "abc", Baz = 123.45M},
                    new MyClass { FooBar = "def", Baz = 678.90M}
                }
            }
        }});
    }
}
class MyClass
{
    [DisplayName("Foo/Bar")]
    public string FooBar { get; set; }
    [TypeConverter(typeof(CurrencyConverter))]
    public decimal Baz { get; set; }
}
class CurrencyConverter : DecimalConverter
{
    public override object ConvertFrom(ITypeDescriptorContext context,
        CultureInfo culture, object value)
    {
        string s = value as string;
        if (s != null) return decimal.Parse(s, NumberStyles.Currency, culture);
        return base.ConvertFrom(context, culture, value);
    }
    public override object ConvertTo(ITypeDescriptorContext context,
        CultureInfo culture, object value, Type destinationType)
    {
        if (destinationType == typeof(string))
        {
            return ((decimal)value).ToString("C2", culture);
        }
        return base.ConvertTo(context, culture, value, destinationType);
    }
}