Get Data From DataGridView SelectedRows

DataGridViewSelectedRowsCollection

by Les Smith

How do I get a collection of selected rows in a DataGridView?  Sometimes the simpliest things can appear to be complex and consume an inordinate amount of time to figure out.

I found this to be the case when I wanted to pass a List of transaction identifiers which were contained in a DataGridView.  Searching the internet did not seem to yeild an immediate answer, so after about ten minutes I figured out the following linese of code to get the ids.

Private Function GetSelectedRowCollection() As List(Of String)       If dgTxActions.SelectedRows.Count > 0 Then          Dim drc As DataGridViewSelectedRowCollection = dgTxActions.SelectedRows          Dim ids As New List(Of String)          For i As Integer = 0 To drc.Count - 1             Dim id As Integer = drc(i).Cells(0).Value             ids.Add(id.ToString)          Next          Return ids       Else          Return Nothing       End If    End Function

The key is the use of the DataGridViewSelectedRowCollection.  I had tried several different collection types to which I could not cast the SelectedRows and finally stumbled on the DataGridViewSelectedRowCollection.  Since casting the SelectedRows was my hangup, having found the proper collection type, the rest was simple.

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