} data = data.Where(predicate);//将最后的predicate传入Where函数,相当于是对括号之间进行逻辑与查询 } itemName = r.Replace(itemName, " ");//把括号给替换掉,再对括号外的内容进行逻辑与查询 } string[] items2 = itemName.Split(' '); foreach (string item in items2) { data = data.Where(...
select new { value, value.Length }; foreach (var new_value in new_values) { Console.WriteLine("{0},{1}", new_value.value, new_value.Length); } Console.ReadKey(); //使用LINQ查询List集合 List<Person> personList = new List<Person>(); personList.Add(new Person { Name = "张三", ...
public string PhoneNumberConverter(string Country, string Phone) { Phone = Phone.Replace(" ", "").Replace(")", ")-"); switch (Country) { case "USA": return "1-" + Phone; case "UK": return "44-" + Phone; default: return Phone; } }下面也是使用了这个方法将电话号码转换为国际格式...
content = (From element In desc...<audience>).ToList() If content.Count > 0 Then For i = 0 To content.Count - 1 content(i).ReplaceWith(<%= content(i).Value %>) Next End If ' Return the updated contents of the <Description> element. Return <%= desc.Nodes ...
(i).Value %>)NextEndIf' Replace<audience>elements with.content = (FromelementIndesc...<audience>).ToList()Ifcontent.Count >0ThenFori =0Tocontent.Count -1content(i).ReplaceWith(<%= content(i).Value %>)NextEndIf' Return the updated contents of the<Description>element.Ret...
(System.Reflection.MemberInfo miingroup) Console.WriteLine(mi.Name);// The output is similar to:// Values that have the key 'Method':// get_Chars// get_Length// IndexOf// IndexOfAny// LastIndexOf// LastIndexOfAny// Insert// Replace// Replace// Remove// Join// Join// Equals// ...
转换操作,如ToArray,ToList,ToDictionary,ToLookup 这些操作会马上执行,不会延迟,因为结果的类型没有支持延迟操作的机制。 延迟执行是非常重要的,因为它解耦了query construction和query execution. Reevaluation 当query被重新枚举的时候,它会重新的执行。 public static void Main() { var numbers = new List<int...
Now you can add a proxy class field to the add-in class, initialize it in ThisAddIn_Startup, and invoke the WCF Service GetDefinition method through the proxy. In the FishEyeClickEvent handler, replace the message box with a call to GetDefinition, parse the returned XML to extract the Key...
Replace myserver in the code with the name of your own system, and update the security settings if you use SQL Server authentication. Write queries. You're ready to design your LINQ queries. Here's some code that gets the first five activities from the Activity table and sorts them: Copy...
Value(p => p.Added, () => Sql.CurrentTimestamp); statement.Insert(); Update Updating records follows similar pattern to Insert. We have an extension method that updates all the columns in the database: using LinqToDB; using var db = new DbNorthwind(); db.Update(product); And we ...