IBindingList.Find(PropertyDescriptor, Object) Method

public:
 int Find(System::ComponentModel::PropertyDescriptor ^ property, System::Object ^ key);

public int Find(System.ComponentModel.PropertyDescriptor property, object key);

abstract member Find : System.ComponentModel.PropertyDescriptor * obj -> int

Public Function Find (property As PropertyDescriptor, key As Object) As Integer

Parameters

Returns

The index of the row that has the given PropertyDescriptor.

Exceptions

Examples

The following code example demonstrates how to implement the Find method.

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

This method will select the first row where the value of the property parameter equals the value of the key parameter.

This method is supported if SupportsSearching is true, otherwise this method throws a NotSupportedException.