/// <summary>
/// DataTable转换成实体列表
/// </summary>
/// <typeparam name="T">实体 T </typeparam>
/// <param name="table">datatable</param>
/// <returns></returns>
public static IList<T> DataTableToList<T>(DataTable table)
where T : class
{
if (!IsHaveRows(table))
return new List<T>(); IList<T> list = new List<T>();
T model = default(T);
foreach (DataRow dr in table.Rows)
{
model = Activator.CreateInstance<T>(); foreach (DataColumn dc in dr.Table.Columns)
{
object drValue = dr[dc.ColumnName];
PropertyInfo pi = model.GetType().GetProperty(dc.ColumnName); if (pi != null && pi.CanWrite && (drValue != null && !Convert.IsDBNull(drValue)))
{
pi.SetValue(model, drValue, null);
}
} list.Add(model);
}
return list;
} /// <summary>
/// 实体列表转换成DataTable
/// </summary>
/// <typeparam name="T">实体</typeparam>
/// <param name="list"> 实体列表</param>
/// <returns></returns>
public static DataTable ListToDataTable<T>(IList<T> list)
where T : class
{
if (list == null || list.Count <= )
{
return null;
}
DataTable dt = new DataTable(typeof(T).Name);
DataColumn column;
DataRow row; PropertyInfo[] myPropertyInfo = typeof(T).GetProperties(BindingFlags.Public | BindingFlags.Instance); int length = myPropertyInfo.Length;
bool createColumn = true; foreach (T t in list)
{
if (t == null)
{
continue;
} row = dt.NewRow();
for (int i = ; i < length; i++)
{
PropertyInfo pi = myPropertyInfo[i];
string name = pi.Name;
if (createColumn)
{
column = new DataColumn(name, pi.PropertyType);
dt.Columns.Add(column);
} row[name] = pi.GetValue(t, null);
} if (createColumn)
{
createColumn = false;
} dt.Rows.Add(row);
}
return dt; }