有時候經常用到需要把一個匿名對象存入session或List<object>或其他容器中，可是取出來的時候變成object了，不太友善使用。
下面是一種轉換方式：
[csharp]
class Program
{
static void Main(string[] args)
{
List<object> olist = new List<object>();
olist.Add(new { Name = "Hauk", Age = 22 });
olist.Add(new { Name = "Emily", Age = 22 });
//使用動态類型
foreach (dynamic item in olist)
{
Console.WriteLine(item.Name);
}
//做類型轉換
var obj = ChangeType(olist[0], new { Name = "", Age = 0 });
Console.WriteLine(obj.Name);
//直接反射
Console.WriteLine(olist[0].GetType().GetProperty("Name").GetValue(olist[0]).ToString());
}
static T ChangeType<T>(object obj, T t)
return (T)obj;
}
View Code
/擷取所有員工和賬号清單對應關系。
DataTable dtAccoutIDList = bll.GetList(model);
//添加一行空行。
DataRow dr = dtAccoutIDList.NewRow();
dr["AccountName"] = "";
dr["AccountID"] = "-2";
dtAccoutIDList.Rows.InsertAt(dr, 0);
dtAccoutIDList.AcceptChanges();
this.cmbAccountList.DisplayMember = "AccountName";
this.cmbAccountList.ValueMember = "[AccountID]";
var query3 = dtAccoutIDList.AsEnumerable().Select(s => new { AccountID = s["AccountID"].ToInt(), AccountName = s["AccountName"].ToString() }).OrderBy(o => o.AccountName).Distinct().ToList();
this.cmbAccountList.DataSource = query3;
--
将資料源轉換為匿名對象數組。
var cmbAccountDataSource = this.cmbAccountList.DataSource.ChangeType(new[] { new { AccountID = 0, AccountName = "" } }.ToList());
或者 this.cceAccount.Properties.DataSource = accounts.Select(m => new { Account = m }).ToList();
将選擇的項，轉換為匿名對象
var cmbSelectedItem = this.cmbAccountList.SelectedItem.ChangeType(new { AccountID = 0, AccountName = "" });
int selectedAccountID=cmbSelectedItem.AccountID
string selectedAccoutName=cmbSelectedItem.AccountName
///擴充方法
public static class Extension
{
public static T ChangeType<T>(this object obj, T t)
{
return (T)obj;
}
}