DbParameterCollection.Contains 方法
定义
指示集合中是否存在具有指定属性的 DbParameter。Indicates whether a DbParameter with the specified property exists in the collection.
重载
| Contains(Object) |
指示集合中是否包含具有指定 Value 的 DbParameter。Indicates whether a DbParameter with the specified Value is contained in the collection. |
| Contains(String) |
指示具有指定名称的 DbParameter 是否存在于集合中。Indicates whether a DbParameter with the specified name exists in the collection. |
Contains(Object)
指示集合中是否包含具有指定 Value 的 DbParameter。Indicates whether a DbParameter with the specified Value is contained in the collection.
public:
abstract bool Contains(System::Object ^ value);
public abstract bool Contains (object value);
abstract member Contains : obj -> bool
Public MustOverride Function Contains (value As Object) As Boolean
参数
- value
- Object
要在集合中查找的 DbParameter 的 Value。The Value of the DbParameter to look for in the collection.
返回
如果 DbParameter 位于集合中,则为 true;否则为 false。true if the DbParameter is in the collection; otherwise false.
实现
适用于
Contains(String)
指示具有指定名称的 DbParameter 是否存在于集合中。Indicates whether a DbParameter with the specified name exists in the collection.
public:
abstract bool Contains(System::String ^ value);
public abstract bool Contains (string value);
abstract member Contains : string -> bool
Public MustOverride Function Contains (value As String) As Boolean
参数
- value
- String
要在集合中查找的 DbParameter 的名称。The name of the DbParameter to look for in the collection.
返回
如果 DbParameter 位于集合中,则为 true;否则为 false。true if the DbParameter is in the collection; otherwise false.