DataColumnMappingCollection.Remove 方法

定义

从集合中移除指定的对象。Removes a specified object from the collection.

重载

Remove(DataColumnMapping)

从集合中移除指定的 DataColumnMappingRemoves the specified DataColumnMapping from the collection.

Remove(Object)

从集合中移除 Object,它是一个 DataColumnMappingRemoves the Object that is a DataColumnMapping from the collection.

Remove(DataColumnMapping)

从集合中移除指定的 DataColumnMappingRemoves the specified DataColumnMapping from the collection.

public:
 void Remove(System::Data::Common::DataColumnMapping ^ value);
public void Remove (System.Data.Common.DataColumnMapping value);
member this.Remove : System.Data.Common.DataColumnMapping -> unit
Public Sub Remove (value As DataColumnMapping)

参数

value
DataColumnMapping

要移除的 DataColumnMappingThe DataColumnMapping to remove.

适用于

Remove(Object)

从集合中移除 Object,它是一个 DataColumnMappingRemoves the Object that is a DataColumnMapping from the collection.

public:
 virtual void Remove(System::Object ^ value);
public void Remove (object? value);
public void Remove (object value);
abstract member Remove : obj -> unit
override this.Remove : obj -> unit
Public Sub Remove (value As Object)

参数

value
Object

Object,它是要移除的 DataColumnMappingThe Object that is the DataColumnMapping to remove.

实现

例外

指定的对象不是 DataColumnMapping 对象。The object specified was not a DataColumnMapping object.

指定的对象不在集合中。The object specified is not in the collection.

示例

下面的示例搜索 DataColumnMapping 集合中的。The following example searches for a DataColumnMapping within the collection. 如果集合中存在该映射,则将其删除。If the mapping exists in the collection, it is removed. 如果集合中不存在映射,则会将其添加到集合中,并显示其索引。If the mapping does not exist within the collection, it is added to the collection and its index is displayed. 该示例假设 DataColumnMappingCollection 已创建一个集合和一个 DataColumnMapping 对象。The example assumes that a DataColumnMappingCollection collection and a DataColumnMapping object have been created.

public void ChangedMyMind()
{
    // ...
    // create mappings and mapping
    // ...
    if (mappings.Contains((Object) mapping))
    {
        mappings.Remove((Object) mapping);
    }
    else
    {
        mappings.Add((Object) mapping);
        Console.WriteLine("Index of new mapping: "
            + mappings.IndexOf((Object) mapping));
    }
}
Public Sub ChangedMyMind()
    ' ...
    ' create mappings and mapping
    ' ...
    If mappings.Contains(CType(mapping, Object)) Then
        mappings.Remove(CType(mapping, Object))
    Else
        mappings.Add(CType(mapping, Object))
        Console.WriteLine("Index of new mapping: " + _
           mappings.IndexOf(CType(mapping, Object)).ToString())
    End If
End Sub

适用于