NameValueCollection.Get 方法
定义
获取 NameValueCollection 中指定项的值,这些值已合并为一个以逗号分隔的列表。Gets the values of a specified entry in the NameValueCollection combined into one comma-separated list.
重载
| Get(Int32) |
获取 NameValueCollection 中指定索引处的值,这些值已合并为一个以逗号分隔的列表。Gets the values at the specified index of the NameValueCollection combined into one comma-separated list. |
| Get(String) |
获取与 NameValueCollection 中的指定键关联的值,这些值已合并为一个以逗号分隔的列表。Gets the values associated with the specified key from the NameValueCollection combined into one comma-separated list. |
Get(Int32)
获取 NameValueCollection 中指定索引处的值,这些值已合并为一个以逗号分隔的列表。Gets the values at the specified index of the NameValueCollection combined into one comma-separated list.
public:
virtual System::String ^ Get(int index);
public virtual string Get (int index);
public virtual string? Get (int index);
abstract member Get : int -> string
override this.Get : int -> string
Public Overridable Function Get (index As Integer) As String
参数
- index
- Int32
项的从零开始的索引,该项包含要从集合中获取的值。The zero-based index of the entry that contains the values to get from the collection.
返回
如果找到,则为一个 String,包含 NameValueCollection 中指定索引处的值的列表(此列表以逗号分隔);否则为 null。A String that contains a comma-separated list of the values at the specified index of the NameValueCollection, if found; otherwise, null.
例外
index 超出了集合的有效索引范围。index is outside the valid range of indexes for the collection.
注解
此方法是一个 O (n) 操作,其中, n 是指定索引处的值的数目。This method is an O(n) operation, where n is the number of values at the specified index.
另请参阅
适用于
Get(String)
获取与 NameValueCollection 中的指定键关联的值,这些值已合并为一个以逗号分隔的列表。Gets the values associated with the specified key from the NameValueCollection combined into one comma-separated list.
public:
virtual System::String ^ Get(System::String ^ name);
public virtual string Get (string name);
public virtual string? Get (string? name);
abstract member Get : string -> string
override this.Get : string -> string
Public Overridable Function Get (name As String) As String
参数
- name
- String
项的 String 键,该项包含要获取的值。The String key of the entry that contains the values to get. 键可以是 null。The key can be null.
返回
如果找到,则为一个 String,包含与 NameValueCollection 中的指定键关联的值的列表(此列表以逗号分隔);否则为 null。A String that contains a comma-separated list of the values associated with the specified key from the NameValueCollection, if found; otherwise, null.
注解
注意
如果找不到指定的键,则此方法 null 在以下情况下返回: 1) ; 如果找到指定的键,则为 2) ; 如果找到指定的值,则为 2 null 。This method returns null in the following cases: 1) if the specified key is not found; and 2) if the specified key is found and its associated value is null. 此方法不区分这两种情况。This method does not distinguish between the two cases.
此方法是一个 (n) 操作的 O,其中 n 是与指定键关联的值的数目。This method is an O(n) operation, where n is the number of values associated with the specified key.