代码之家 › 专栏 › 技术社区 › Blorgbeard

我是否可以在属性上使用属性来告诉DataGridView如何格式化列?

attributes properties datagridview .net c#

8

Blorgbeard · 技术社区 · 17 年前

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

我想展示一个 List<MyClass> DataGridView (对于自动生成的列),将Baz列显示格式化为货币的最简单方法是什么?

是否有一个属性可以像我正在使用的那样使用 DisplayName ,还是我必须在创建列后处理它们?

2 回复 | 直到 9 年前

1

5

Blorgbeard 17 年前

像这样。

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"); }
  }
}

2

5

Marc Gravell 17 年前

TypeConverterAttribute

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);
    }
}