BindingList<T>.SupportsSearchingCore Property
Definition
Important
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Gets a value indicating whether the list supports searching.
protected:
virtual property bool SupportsSearchingCore { bool get(); };protected virtual bool SupportsSearchingCore { get; }member this.SupportsSearchingCore : boolProtected Overridable ReadOnly Property SupportsSearchingCore As BooleanProperty Value
true if the list supports searching; otherwise, false. The default is false.
Examples
The following code example demonstrates how to use the SupportsSearchingCore member.
public class MyFontList : BindingList<Font>
{
protected override bool SupportsSearchingCore => 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.Equals((string)key, StringComparison.CurrentCultureIgnoreCase))
{
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
Remarks
The BindingList<T> class does not provide a base implementation of searching, so SupportsSearchingCore always returns false by default. For more information about implementing searching, see the IBindingList.Find method.
