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把IList和泛型數組轉換為DataTable
/// <summary>/// 將集合類轉換成DataTable
/// </summary>
/// <param name="list">集合</param>
/// <returns></returns>
public static DataTable ToDataTable(IList list)
{
DataTable result = new DataTable();
if (list.Count > 0)
{
PropertyInfo[] propertys = list[0].GetType().GetProperties();
foreach (PropertyInfo pi in propertys)
{
result.Columns.Add(pi.Name, pi.PropertyType);
}
for (int i = 0; i < list.Count; i++)
{
ArrayList tempList = new ArrayList();
foreach (PropertyInfo pi in propertys)
{
object obj = pi.GetValue(list[i], null);
tempList.Add(obj);
}
object[] array = tempList.ToArray();
result.LoadDataRow(array, true);
}
}
return result;
}
/// <summary>
/// 將泛型集合類轉換成DataTable
/// </summary>
/// <typeparam name="T">集合項類型</typeparam>
/// <param name="list">集合</param>
/// <returns>數據集(表)</returns>
public static DataTable ToDataTable<T>(IList<T> list)
{
return ToDataTable<T>(list, null);
}
/// <summary>
/// 將泛型集合類轉換成DataTable
/// </summary>
/// <typeparam name="T">集合項類型</typeparam>
/// <param name="list">集合</param>
/// <param name="propertyName">需要返回的列的列名</param>
/// <returns>數據集(表)</returns>
public static DataTable ToDataTable<T>(IList<T> list, params string[] propertyName)
{
List<string> propertyNameList = new List<string>();
if (propertyName != null)
{
propertyNameList.AddRange(propertyName);
}
DataTable result = new DataTable();
if (list.Count > 0)
{
PropertyInfo[] propertys = list[0].GetType().GetProperties();
foreach (PropertyInfo pi in propertys)
{
if (propertyNameList.Count == 0)
{
result.Columns.Add(pi.Name, pi.PropertyType);
}
else
{
if (propertyNameList.Contains(pi.Name))
{
result.Columns.Add(pi.Name, pi.PropertyType);
}
}
}
for (int i = 0; i < list.Count; i++)
{
ArrayList tempList = new ArrayList();
foreach (PropertyInfo pi in propertys)
{
if (propertyNameList.Count == 0)
{
object obj = pi.GetValue(list[i], null);
tempList.Add(obj);
}
else
{
if (propertyNameList.Contains(pi.Name))
{
object obj = pi.GetValue(list[i], null);
tempList.Add(obj);
}
}
}
object[] array = tempList.ToArray();
result.LoadDataRow(array, true);
}
}
return result;
}
最後更新：2017-04-02 22:15:57