واجهتنى مشكله عند استخدام الداله ()ToDataTable فى ملئ ال DataSet عن طريق ال LINQ
حيث أن كود الداله
public static DataTable ToDataTable<T>(this IEnumerable<T> varlist)
{
DataTable dtReturn = new DataTable();
// column names
PropertyInfo[] oProps = null;
if (varlist == null) return dtReturn;
foreach (T rec in varlist)
{
// Use reflection to get property names, to create table, Only first time, others will follow
if (oProps == null)
{
oProps = ((Type)rec.GetType()).GetProperties();
foreach (PropertyInfo pi in oProps)
{
Type colType = pi.PropertyType;
if ((colType.IsGenericType) && (colType.GetGenericTypeDefinition() == typeof(Nullable<>)))
{
colType = colType.GetGenericArguments()[0];
}
dtReturn.Columns.Add(new DataColumn(pi.Name, colType));
}
}
DataRow dr = dtReturn.NewRow();
foreach (PropertyInfo pi in oProps)
{
dr[pi.Name] = pi.GetValue(rec, null) == null ? DBNull.Value : pi.GetValue
(rec, null);
}
dtReturn.Rows.Add(dr);
}
return dtReturn;
}فعند استخدامها فى جلب البيانات فى ال DataSet عن طريق الكود الأتى مثلا
DataSet DS = new DataSet();
var query = from c in EntryDetails
where c.EntryID == 10
select c;
DS.Tables.Add(query.ToDataTable());يظهر خطأ فى ال Debugging كما فى الصوره
