DataGridview綁定復(fù)雜對象

假設(shè)有一個(gè)類

class Person    {        PRivate string id;        private string name;        private Address homeAddr;        public string ID        {            get { return id; }            set { id = value; }        }        public string Name        {            get { return name; }            set { name = value; }        }        public Address HomeAddr        {            get { return homeAddr; }            set { homeAddr = value; }        }    }    class Address    {        private string cityname;        private string postcode;        public string CityName        {            get { return cityname; }            set { cityname = value; }        }        public string PostCode        {            get { return postcode; }            set { postcode = value; }        }    }

將類綁定到Datagridview

List<Person> lst = new List<Person>();            for (int i = 0; i < 10000; ++i)            {                lst.Add(new Person()                {                    ID = "1",                    Name = "name",                    HomeAddr = new Address() { CityName = “CityName”, PostCode = “PostCode ”}                });            }            dataGridView1.DataSource = lst;

其實(shí)值已經(jīng)有了，只是Datagridview不顯示。可以通過DataPropertyName指定子屬性名字，在CellFormatting事件中通過反射獲取。

private void dataGridView1_CellFormatting(object sender, DataGridViewCellFormattingEventArgs e)        {            if ((dataGridView1.Rows[e.RowIndex].DataBoundItem != null) &&                (dataGridView1.Columns[e.ColumnIndex].DataPropertyName.Contains(".")))            {                string[] names = dataGridView1.Columns[e.ColumnIndex].DataPropertyName.Split('.');                object obj = dataGridView1.Rows[e.RowIndex].DataBoundItem;                for (int i = 0; i < names.Count(); ++i)                {                    try                    {                        var result = obj.GetType().GetProperty(names[i]).GetValue(obj, null);                        obj = result;                        e.Value = result.ToString();                    }                    catch (Exception)                    {                        return;                        throw;                    }                }            }        }

結(jié)果發(fā)現(xiàn)Datagridview列多了

可以指定dataGridView1的AutoGenerateColumns屬性為false，讓datagridview不自動生成列。（要在綁定前指定）

• 如果字屬性只有一個(gè)屬性要顯示，可以直接override字屬性的ToString方法。
• msdn上有人用特性實(shí)現(xiàn)，不過我試了下貌似不行。http://blogs.msdn.com/b/msdnts/archive/2007/01/19/how-to-bind-a-datagridview-column-to-a-second-level-property-of-a-data-source.aspx