item T 要插入的物件。 參考類型的值可以是null。 實作 Insert(Int32, T) 例外狀況 ArgumentOutOfRangeException index小於 0。 -或- index大於Count。 範例 下列範例示範如何在 中List<T>新增、移除和插入簡單的商務物件。 C#複製 執行 usingSystem;usingSystem.Col
KeyedCollection<TKey,TItem>.InsertItem(Int32, TItem) 方法 参考 定义 命名空间: System.Collections.ObjectModel 程序集: mscorlib.dll 将元素插入KeyedCollection<TKey,TItem>的指定索引处。 C#复制 protectedoverridevoidInsertItem(intindex, TItem item); ...
>>> a = [1, 2, 4] >>> insert_at = 2 # Index at which you want to insert item >>> b = a[:] # Created copy of list "a" as "b". # Skip this step if you are ok with modifying the original list >>> b[insert_at:insert_at] = [3] # Insert "3" within "b" >>>...
The zero-based index in the list at which to insert the item data, or –1 to add it to the end of the list. data Type:LPARAM A pointer to the item data to insert. Return value Type:int The return value is the zero-based index of the item in the list box. If an error occurs...
The index parameter is less than zero or greater than the value of the Count property of the ListViewItem.ListViewSubItemCollection. Remarks This method allows you to insert a subitem at a specific position in the ListViewItem.ListViewSubItemCollection. To add a subitem without specifying a ...
( myI16 );// Display the contents of the collection using the Count property and the Item property.Console.WriteLine("Initial contents of the collection (using Count and Item):"); PrintIndexAndValues( myI16 );// Search the collection with Contains and IndexOf.Console.WriteLine("Contains 3:...
voidListView_InsertItem( hwnd, pitem ); Parameters hwnd Type:HWND A handle to the list-view control. pitem Type:const LPLVITEM A pointer to anLVITEMstructure that specifies the attributes of the list-view item. Use theiItemmember to specify the zero-based index at which the new item shou...
List boxLike a group of option buttons, a list box enables users to select from multiple options on the form. However, with list boxes, users make their choice by clicking an item in the list, rather than by clicking a small circle. ...
item T 要插入的对象。 对于引用类型,该值可以为 null。 实现 Insert(Int32, T) 例外 ArgumentOutOfRangeException index 小于0。 -或 - index 大于Count。 示例 以下示例演示如何在 中添加、删除和插入简单的业务对象 List<T>。 C# 复制 运行 using System; using System.Collections.Generic; // Simple...
List boxLike a group of option buttons, a list box enables users to select from multiple options on the form. However, with list boxes, users make their choice by clicking an item in the list, rather than by clicking a small circle. ...