本文整理汇总了C#中System.Data.Objects.ObjectQuery<T>.ObjectQuery构造函数的典型用法代码示例。如果您正苦于以下问题：C# ObjectQuery<T>构造函数的具体用法？C# ObjectQuery<T>怎么用？C# ObjectQuery<T>使用的例子？那么, 这里精选的构造函数代码示例或许可以为您提供帮助。您也可以进一步了解该构造函数所在类System.Data.Objects.ObjectQuery<T>的用法示例。
在下文中一共展示了ObjectQuery<T>构造函数的2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: using
//引入命名空间
using (AdventureWorksEntities context =
new AdventureWorksEntities())
{
// Call the constructor with a query for products and the ObjectContext.
ObjectQuery<Product> productQuery1 =
new ObjectQuery<Product>("Products", context);
foreach (Product result in productQuery1)
Console.WriteLine("Product Name: {0}", result.Name);
string queryString =
@"SELECT VALUE product FROM AdventureWorksEntities.Products AS product";
// Call the constructor with the specified query and the ObjectContext.
ObjectQuery<Product> productQuery2 =
new ObjectQuery<Product>(queryString, context);
foreach (Product result in productQuery2)
Console.WriteLine("Product Name: {0}", result.Name);
// Call the constructor with the specified query, the ObjectContext,
// and the NoTracking merge option.
ObjectQuery<Product> productQuery3 =
new ObjectQuery<Product>(queryString,
context, MergeOption.NoTracking);
foreach (Product result in productQuery3)
Console.WriteLine("Product Name: {0}", result.Name);
}示例2: using
int productID = 900;
using (AdventureWorksEntities context =
new AdventureWorksEntities())
{
string queryString = @"SELECT VALUE product FROM
AdventureWorksEntities.Products AS product
WHERE product.ProductID > @productID";
ObjectQuery<Product> productQuery1 =
new ObjectQuery<Product>(queryString,
context, MergeOption.NoTracking);
productQuery1.Parameters.Add(new ObjectParameter("productID", productID));
ObjectQuery<DbDataRecord> productQuery2 =
productQuery1.Select("it.ProductID");
foreach (DbDataRecord result in productQuery2)
{
Console.WriteLine("{0}", result["ProductID"]);
}
}