BindingManagerBase.GetItemProperties 方法
定義
重要
部分資訊涉及發行前產品,在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊,不做任何明確或隱含的瑕疵擔保。
取得資料來源的屬性描述項清單。
多載
GetItemProperties() |
當在衍生類別中覆寫時,取得繫結的屬性描述項集合。 |
GetItemProperties(ArrayList, ArrayList) |
使用指定的 ArrayList,取得繫結的屬性描述項集合。 |
GetItemProperties(Type, Int32, ArrayList, ArrayList) |
取得由這個 BindingManagerBase 所管理項目的屬性清單。 |
GetItemProperties()
當在衍生類別中覆寫時,取得繫結的屬性描述項集合。
public:
abstract System::ComponentModel::PropertyDescriptorCollection ^ GetItemProperties();
public:
virtual System::ComponentModel::PropertyDescriptorCollection ^ GetItemProperties();
public abstract System.ComponentModel.PropertyDescriptorCollection GetItemProperties ();
public virtual System.ComponentModel.PropertyDescriptorCollection GetItemProperties ();
abstract member GetItemProperties : unit -> System.ComponentModel.PropertyDescriptorCollection
abstract member GetItemProperties : unit -> System.ComponentModel.PropertyDescriptorCollection
override this.GetItemProperties : unit -> System.ComponentModel.PropertyDescriptorCollection
Public MustOverride Function GetItemProperties () As PropertyDescriptorCollection
Public Overridable Function GetItemProperties () As PropertyDescriptorCollection
傳回
PropertyDescriptorCollection,表示繫結的屬性描述項。
範例
下列程式碼範例會 GetItemProperties 使用 方法傳回 PropertyDescriptorCollection 。 此範例會 Name 使用 GetValue 的 方法列印目前 DataColumn 的 PropertyDescriptor 和 值。
void ShowGetItemProperties()
{
// Create a new DataTable and add two columns.
DataTable^ dt = gcnew DataTable;
dt->Columns->Add( "Name", Type::GetType( "System.String" ) );
dt->Columns->Add( "ID", Type::GetType( "System.String" ) );
// Add a row to the table.
DataRow^ dr = dt->NewRow();
dr[ "Name" ] = "Ann";
dr[ "ID" ] = "AAA";
dt->Rows->Add( dr );
PropertyDescriptorCollection^ myPropertyDescriptors = this->BindingContext[ dt ]->GetItemProperties();
PropertyDescriptor^ myPropertyDescriptor = myPropertyDescriptors[ "Name" ];
Console::WriteLine( myPropertyDescriptor->Name );
Console::WriteLine( myPropertyDescriptor->GetValue( dt->DefaultView[ 0 ] ) );
}
private void ShowGetItemProperties()
{
// Create a new DataTable and add two columns.
DataTable dt = new DataTable();
dt.Columns.Add("Name", Type.GetType("System.String"));
dt.Columns.Add("ID", Type.GetType("System.String"));
// Add a row to the table.
DataRow dr = dt.NewRow();
dr["Name"] = "Ann";
dr["ID"] = "AAA";
dt.Rows.Add(dr);
PropertyDescriptorCollection myPropertyDescriptors =
this.BindingContext[dt].GetItemProperties();
PropertyDescriptor myPropertyDescriptor =
myPropertyDescriptors["Name"];
Console.WriteLine(myPropertyDescriptor.Name);
Console.WriteLine(myPropertyDescriptor.GetValue
(dt.DefaultView[0]));
}
Private Sub ShowGetItemProperties()
' Create a new DataTable and add two columns.
Dim dt As New DataTable()
dt.Columns.Add("Name", Type.GetType("System.String"))
dt.Columns.Add("ID", Type.GetType("System.String"))
' Add a row to the table.
Dim dr As DataRow = dt.NewRow()
dr("Name") = "Ann"
dr("ID") = "AAA"
dt.Rows.Add(dr)
Dim myPropertyDescriptors As PropertyDescriptorCollection = _
Me.BindingContext(dt).GetItemProperties()
Dim myPropertyDescriptor As PropertyDescriptor = myPropertyDescriptors("Name")
Console.WriteLine(myPropertyDescriptor.Name)
Console.WriteLine(myPropertyDescriptor.GetValue(dt.DefaultView(0)))
End Sub
另請參閱
適用於
GetItemProperties(ArrayList, ArrayList)
使用指定的 ArrayList,取得繫結的屬性描述項集合。
protected public:
virtual System::ComponentModel::PropertyDescriptorCollection ^ GetItemProperties(System::Collections::ArrayList ^ dataSources, System::Collections::ArrayList ^ listAccessors);
protected internal virtual System.ComponentModel.PropertyDescriptorCollection GetItemProperties (System.Collections.ArrayList dataSources, System.Collections.ArrayList listAccessors);
protected internal virtual System.ComponentModel.PropertyDescriptorCollection? GetItemProperties (System.Collections.ArrayList dataSources, System.Collections.ArrayList listAccessors);
abstract member GetItemProperties : System.Collections.ArrayList * System.Collections.ArrayList -> System.ComponentModel.PropertyDescriptorCollection
override this.GetItemProperties : System.Collections.ArrayList * System.Collections.ArrayList -> System.ComponentModel.PropertyDescriptorCollection
Protected Friend Overridable Function GetItemProperties (dataSources As ArrayList, listAccessors As ArrayList) As PropertyDescriptorCollection
參數
傳回
PropertyDescriptorCollection,表示繫結的屬性描述項。
備註
開發人員會使用此方法來建立資料繫結控制項。
另請參閱
適用於
GetItemProperties(Type, Int32, ArrayList, ArrayList)
取得由這個 BindingManagerBase 所管理項目的屬性清單。
protected:
virtual System::ComponentModel::PropertyDescriptorCollection ^ GetItemProperties(Type ^ listType, int offset, System::Collections::ArrayList ^ dataSources, System::Collections::ArrayList ^ listAccessors);
protected virtual System.ComponentModel.PropertyDescriptorCollection GetItemProperties (Type listType, int offset, System.Collections.ArrayList dataSources, System.Collections.ArrayList listAccessors);
protected virtual System.ComponentModel.PropertyDescriptorCollection? GetItemProperties (Type listType, int offset, System.Collections.ArrayList dataSources, System.Collections.ArrayList listAccessors);
abstract member GetItemProperties : Type * int * System.Collections.ArrayList * System.Collections.ArrayList -> System.ComponentModel.PropertyDescriptorCollection
override this.GetItemProperties : Type * int * System.Collections.ArrayList * System.Collections.ArrayList -> System.ComponentModel.PropertyDescriptorCollection
Protected Overridable Function GetItemProperties (listType As Type, offset As Integer, dataSources As ArrayList, listAccessors As ArrayList) As PropertyDescriptorCollection
參數
- offset
- Int32
計數器,用來遞迴呼叫方法。
傳回
PropertyDescriptorCollection,表示繫結的屬性描述項。
範例
下列程式碼範例會 GetItemProperties 使用 方法傳回 PropertyDescriptorCollection 的 BindingManagerBase 。 然後,此範例會 Name 列印集合中每個 PropertyDescriptor 的 和 PropertyType 。
void PrintPropertyDescriptions( BindingManagerBase^ b )
{
Console::WriteLine( "Printing Property Descriptions" );
PropertyDescriptorCollection^ ps = b->GetItemProperties();
for ( int i = 0; i < ps->Count; i++ )
{
Console::WriteLine( "\t{0}\t{1}", ps[ i ]->Name, ps[ i ]->PropertyType );
}
}
private void PrintPropertyDescriptions(BindingManagerBase b)
{
Console.WriteLine("Printing Property Descriptions");
PropertyDescriptorCollection ps = b.GetItemProperties();
for(int i = 0; i < ps.Count; i++)
{
Console.WriteLine("\t" + ps[i].Name + "\t" + ps[i].PropertyType);
}
}
Private Sub PrintPropertyDescriptions(b As BindingManagerBase)
Console.WriteLine("Printing Property Descriptions")
Dim ps As PropertyDescriptorCollection = b.GetItemProperties()
Dim i As Integer
For i = 0 To ps.Count - 1
Console.WriteLine((ControlChars.Tab & ps(i).Name & ControlChars.Tab & ps(i).PropertyType.ToString))
Next i
End Sub
備註
開發人員會使用此多載來建立資料繫結控制項。