如何将List转换为.Net中的dataview.
解决方法
我的建议是将列表转换为DataTable,然后使用表的默认视图构建您的DataView.
首先,你必须建立数据表：
// <T> is the type of data in the list.
// If you have a List<int>,for example,then call this as follows:
// List<int> ListOfInt;
// DataTable ListTable = BuildDataTable<int>(ListOfInt);
public static DataTable BuildDataTable<T>(IList<T> lst)
{
//create DataTable Structure
DataTable tbl = CreateTable<T>();
Type entType = typeof(T);
PropertyDescriptorCollection properties = TypeDescriptor.GetProperties(entType);
//get the list item and add into the list
foreach (T item in lst)
{
DataRow row = tbl.NewRow();
foreach (PropertyDescriptor prop in properties)
{
row[prop.Name] = prop.GetValue(item);
}
tbl.Rows.Add(row);
}
return tbl;
}
private static DataTable CreateTable<T>()
{
//T –> ClassName
Type entType = typeof(T);
//set the datatable name as class name
DataTable tbl = new DataTable(entType.Name);
//get the property list
PropertyDescriptorCollection properties = TypeDescriptor.GetProperties(entType);
foreach (PropertyDescriptor prop in properties)
{
//add property as column
tbl.Columns.Add(prop.Name,prop.PropertyType);
}
return tbl;
}
接下来,获取DataTable的默认视图：
DataView NewView = MyDataTable.DefaultView;
一个完整的例子如下：
List<int> ListOfInt = new List<int>(); // populate list DataTable ListAsDataTable = BuildDataTable<int>(ListOfInt); DataView ListAsDataView = ListAsDataTable.DefaultView;
