C# IList转为DataTable

public class WebUtil

{

/// <summary>

/// 转换IList<T>为DataTable /// </summary> /// <typeparam name="T">泛型类型</typeparam> /// <param name="list">泛型List集合</param> /// <returns>Datatable 对象</returns> public static DataTable ConvertToDataTable<T>(IList<T> list)

 {

DataTable table = CreateTable<T>();

Type entityType = typeof(T); PropertyDescriptorCollection properties = TypeDescriptor.GetProperties(entityType);

foreach (T item in list)

 {

DataRow row = table.NewRow();

foreach (PropertyDescriptor prop in properties)

 {

 row[prop.Name] = prop.GetValue(item);

 }

 table.Rows.Add(row);

 }

return table;

 }

public static DataTable CreateTable<T>()

 {

Type entityType = typeof(T); DataTable table = new DataTable(entityType.Name); PropertyDescriptorCollection properties = TypeDescriptor.GetProperties(entityType);

foreach (PropertyDescriptor prop in properties)

 {

//解决 DataSet不支持System.Nullable<>”的异常 Type colType = prop.PropertyType; if ((colType.IsGenericType) && (colType.GetGenericTypeDefinition() == typeof(Nullable<>)))

 {

 colType = colType.GetGenericArguments()[0];

 }

 table.Columns.Add(prop.Name, colType);

 }

return table;

 }

}

 

//在调用上面的那个类的方法时出现 “DataSet不支持System.Nullable<>”的异常。下面是调用的方式。

IList<PersonInfo> list = GetPersonInfoList();//这是我的列表获取方法。。这里没问题的！！有数据得到！
var dt = WebUtil.ConvertTo<PersonInfo>(list);