BindingSource.Find Method (String, Object)

Note: This method is new in the .NET Framework version 2.0.

Returns the index of the item in the list with the specified property name and value.

Namespace: System.Windows.Forms
Assembly: System.Windows.Forms (in

public int Find (
	string propertyName,
	Object key
public int Find (
	String propertyName, 
	Object key
public function Find (
	propertyName : String, 
	key : Object
) : int



The name of the property to search for.


The value of the item with the specified propertyName to find.

Return Value

The zero-based index of the item with the specified property name and value.

Exception typeCondition


The underlying list is not a IBindingList with searching functionality implemented.


propertyName does not match a property in the list.

The Find method can only be used when the underlying list is an IBindingList with searching implemented. An example of a class that meets these conditions is the DataView.

The property name comparison is case-insensitive.

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0

.NET Compact Framework

Supported in: 2.0

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