[摘]IList及泛型集合类转换DataTable

代码

         ///   <summary>
         ///  将集合类转换成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;
        }

 

代码

         ///   <summary>
         ///  将泛型集合类转换成DataTable
         ///   </summary>
         ///   <typeparam name="T"> 集合项类型 </typeparam>
         ///   <param name="list"> 集合 </param>
         ///   <returns> 数据集(表) </returns>
         public   static  DataTable ToDataTable < T > (IList < T >  list)
        {
             return  ConvertX.ToDataTable < T > (list,  null );
        }

 

 

代码

         ///   <summary>
         ///  将泛型集合类转换成DataTable
         ///   </summary>
         ///   <typeparam name="T"> 集合项类型 </typeparam>
         ///   <param name="list"> 集合 </param>
         ///   <param name="propertyName"> 需要返回的列的列名 </param>
         ///   <returns> 数据集(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;
        }