本文整理汇总了C#中QueryBuilder.IfThenElse方法的典型用法代码示例。如果您正苦于以下问题：C# QueryBuilder.IfThenElse方法的具体用法？C# QueryBuilder.IfThenElse怎么用？C# QueryBuilder.IfThenElse使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类QueryBuilder的用法示例。
在下文中一共展示了QueryBuilder.IfThenElse方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: btnQuery_Click
private void btnQuery_Click(object sender, EventArgs e)
{
List<Product> productList = new List<Product>();
for (int i = 0; i < 10; i++)
{
Product product = new Product();
product.Id = i + 1000;
product.Name = "Cost " + i.ToString();
Random random = new Random(i);
product.Quotation = new Quotation();
product.Quotation.Info = new Information();
product.Quotation.StartingPrice = 1000 + i;
product.Quotation.Info.Number = product.Id;
product.AnnualQuotation = new AnnualQuotation();
product.AnnualQuotation.StartingPrice = 5000 + i;
product.RecommandLevel = i;
product.Type = (i % 2 == 0) ? productType.Annual :
productType.NonAnnual;
productList.Add(product);
}
ProductRequest request = new ProductRequest();
request.IsAnnualCover = true;
request.OrderType = 1;
IQueryBuilder<Product> qb = new QueryBuilder<Product>();
var annualPriceOrderPredicateCases = new Dictionary<int, Expression<Func<Product, dynamic>>>();
var annualPriceSortOrderCases = new Dictionary<int, SortOrder>();
annualPriceOrderPredicateCases.Add(0, (p)=>p.AnnualQuotation != null ? p.AnnualQuotation.StartingPrice : p.Id);
annualPriceOrderPredicateCases.Add(1, (p)=>p.AnnualQuotation != null ? p.AnnualQuotation.StartingPrice : p.Id);
annualPriceOrderPredicateCases.Add(2, (p)=>p.RecommandLevel);
annualPriceSortOrderCases.Add(0, SortOrder.Ascending);
annualPriceSortOrderCases.Add(1, SortOrder.Descending);
annualPriceSortOrderCases.Add(2, SortOrder.Descending);
//qb.SwitchOrderBy(() => request.OrderType, annualPriceOrderPredicateCases, annualPriceSortOrderCases);
var nonAnnualOrderPredicateCases = new Dictionary<int, Expression<Func<Product, dynamic>>>();
var nonAnnualPriceSortOrderCases = new Dictionary<int, SortOrder>();
nonAnnualOrderPredicateCases.Add(1, p => p.Quotation != null ? p.Quotation.StartingPrice : p.Id);
nonAnnualOrderPredicateCases.Add(2, p => p.Quotation != null ? p.Quotation.StartingPrice : p.Id);
nonAnnualOrderPredicateCases.Add(3, p => p.RecommandLevel);
nonAnnualPriceSortOrderCases.Add(0, SortOrder.Ascending);
nonAnnualPriceSortOrderCases.Add(1, SortOrder.Descending);
nonAnnualPriceSortOrderCases.Add(2, SortOrder.Descending);
//qb.SwitchOrderBy(() => request.OrderType, nonAnnualOrderPredicateCases, nonAnnualPriceSortOrderCases);
IList<Product> pListOrdered =
qb.IfThenElse(() => request.IsAnnualCover,
() => qb.SwitchOrderBy(() => request.OrderType, annualPriceOrderPredicateCases, annualPriceSortOrderCases),
() => qb.SwitchOrderBy(() => request.OrderType, nonAnnualOrderPredicateCases, nonAnnualPriceSortOrderCases))
.ToList(productList);
var annualPriceCases = new Dictionary<int, Expression<Func<Product, bool>>>();
annualPriceCases.Add(1, p => p.Quotation.StartingPrice > 1003);
annualPriceCases.Add(2, p => p.Quotation.StartingPrice > 1004);
IList<Product> pList1 = qb.Switch(()=>request.OrderType, annualPriceCases).ToList(productList);
IList<Product> pList2 = qb.Filter(p => p.Id > 1000).
And(p => p.Quotation.StartingPrice > 1002).
OrderBy(p=>p.AnnualQuotation.StartingPrice).
ToList(productList.AsQueryable());
}