System.ArgumentException: An item with the same key has already been added.
at System.ThrowHelper.ThrowArgumentException(ExceptionResource resource)
at System.Collections.Generic.Dictionary`2.Insert(TKey key, TValue value, Boolean add)
at System.Data.Linq.DataContext.GetTable(MetaTable metaTable)
at System.Data.Linq.CommonDataServices.GetDataMemberQuery(MetaDataMember member, Expression[] keyValues)
at System.Data.Linq.CommonDataServices.DeferredSourceFactory`1.ExecuteKeyQuery(Object[] keyValues)
at System.Data.Linq.CommonDataServices.DeferredSourceFactory`1.Execute(Object instance)
at System.Data.Linq.EntitySet`1.Load()
at System.Data.Linq.EntitySet`1.GetEnumerator()
at System.Linq.Enumerable.First[TSource](IEnumerable`1 source, Func`2 predicate)
at System.Web.Mvc.PathExtensions.Path(Party party) in E:\ERP\ERP.Web.Directory\Code\ErpExtensions.cs:line 45
at CompiledRazorTemplates.Dynamic.afbbecbbcfdcacad.Execute()
at RazorEngine.Templating.TemplateBase.Run(ExecuteContext context)
at System.Web.Mvc.HtmlTemplateBase`1.Run(ExecuteContext context)
at CMS.Core.ITemplateExtensions.Run[T](ITemplate template, T Model)
at CMS.Core.ITemplateExtensions.Parse[T](String template, T Model)
Leading Publishers in Bangladesh
@{ var s = ERP.Data.Service.BusinessService.ByType("Publisher").OrderByDescending(i => i.Party.RelatedProducts.Count()).ToList();}
@foreach (var item in s.Take(20))
{
}
Error:
Value cannot be null.
Parameter name: writer
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@{ var db = ERP.Data.DBContext.Current;
var authors = db.Party.Active().Where(p => p.TypeId == 1017 && db.PartyProduct.Any(i => i.PartyId == p.Id));
var books = ERP.Data.DBContext.Current.Product.Active();
}
A National Archive of Information
@ERP.Data.Service.BusinessService.ByType("Publisher").Count()
Publishers
Featuring complete portfolio & virtual showroom of @ERP.Data.Service.BusinessService.ByType("Publisher").Count() active Publishers in Bangladesh.
@authors.Count().ToString("#,###")
Authors
Portfolio of an ever growing list of legends. About @authors.Count().ToString("#,###") Bengali authors & Poets of the past, present & future.
@books.Count().ToString("#,###")
Books
A complete online catalog of Bangla books. From the everlasting classics to modern literature of the future generation.
Error:
Value cannot be null.
Parameter name: writer
