DataGridview绑定复杂对象
假设有一个类
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; }}}
将类绑定到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;
其实值已经有了，只是Datagridview不显示。可以通过DataPropertyName指定子属性名字，在CellFormatting事件中通过反射获取。
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;}}}}
结果发现Datagridview列多了
可以指定dataGridView1的AutoGenerateColumns属性为false，让datagridview不自动生成列。（要在绑定前指定）
