IBindingList.SupportsSearching Eigenschaft

Definition

Namespace:

System.ComponentModel

Assembly:

System.ComponentModel.TypeConverter.dll

Ruft ab, ob die Liste die Suche mit der Find(PropertyDescriptor, Object)-Methode unterstützt.

public:
 property bool SupportsSearching { bool get(); };

public bool SupportsSearching { get; }

member this.SupportsSearching : bool

Public ReadOnly Property SupportsSearching As Boolean

Eigenschaftswert

Boolean

true, wenn die Liste die Suche mit der Find(PropertyDescriptor, Object)-Methode unterstützt, andernfalls false.

Beispiele

Im folgenden Codebeispiel wird veranschaulicht, wie die SupportsSearching -Eigenschaft implementiert wird.

    public class MyFontList : BindingList<Font>
    {

        protected override bool SupportsSearchingCore
        {
            get { return true; }
        }
        protected override int FindCore(PropertyDescriptor prop, object key)
        {
            // Ignore the prop value and search by family name.
            for (int i = 0; i < Count; ++i)
            {
                if (Items[i].FontFamily.Name.ToLower() == ((string)key).ToLower())
                    return i;
            }
            return -1;
        }
    }
}

Public Class MyFontList
    Inherits BindingList(Of Font)

    Protected Overrides ReadOnly Property SupportsSearchingCore() As Boolean
        Get
            Return True
        End Get
    End Property
    
    Protected Overrides Function FindCore(ByVal prop As PropertyDescriptor, _
        ByVal key As Object) As Integer
        ' Ignore the prop value and search by family name.
        Dim i As Integer
        While i < Count
            If Items(i).FontFamily.Name.ToLower() = CStr(key).ToLower() Then
                Return i
            End If
            i += 1
        End While

        Return -1
    End Function
End Class