How to obtain a grid row handle by a data row object

Description:
The GridView class has the GetRow method, which returns a row object by a given GridView row handle. I need the opposite function, which returns a row handle by a given data row. Is there one?

Answer:
[Current versions]

Our current versions have an undocumented GridView.DataController.FindRowByRowValue method that allows finding a row handle by its value without iterating through the grid rows. The 14.2 version also has a documented GridView.FindRow method.
[Old versions]
There is no such method in the current version. It may be implemented in future grid versions - such a request is already in our suggestions list. Currently, you can use one of the following functions.

C#
private int FindRowHandleByRowObject(DevExpress.XtraGrid.Views.Grid.GridView view, object row) {  

    if(row != null)  

        for(int i = 0; i < view.DataRowCount; i++)  

            if(row.Equals(view.GetRow(i)))  

                return i;  

    return DevExpress.XtraGrid.GridControl.InvalidRowHandle;  

}  



private int FindRowHandleByDataRow(DevExpress.XtraGrid.Views.Grid.GridView view, DataRow row) {  

    if(row != null)  

        for(int i = 0; i < view.DataRowCount; i++)  

            if(view.GetDataRow(i) == row)  

                return i;  

    return DevExpress.XtraGrid.GridControl.InvalidRowHandle;  

}  

Visual Basic
Private Function FindRowHandleByRowObject(ByVal view As DevExpress.XtraGrid.Views.Grid.GridView, ByVal row As Object) As Integer
    Dim i As Integer
    If Not row Is Nothing Then
        For i = 0 To view.DataRowCount - 1
            If row.Equals(view.GetRow(i)) Then
                Return i
            End If
        Next
    End If
    Return DevExpress.XtraGrid.GridControl.InvalidRowHandle
End Function

Private Function FindRowHandleByDataRow(ByVal view As DevExpress.XtraGrid.Views.Grid.GridView, ByVal row As DataRow) As Integer
    Dim i As Integer
    If Not row Is Nothing Then
        For i = 0 To view.DataRowCount - 1
            If row Is view.GetDataRow(i) Then
                Return i
            End If
        Next
    End If
    Return DevExpress.XtraGrid.GridControl.InvalidRowHandle
End Function

See Also:
Identifying Rows and Cards
Can the GridView.ViewRowHandleToDataSourceIndex method be used when the grid's DataSource is a DataTable?