Multiple selection with mouse in Datagridview VB.NET

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Multiple selection with mouse in Datagridview VB.NET

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#1 by (1 votes)
#2 by (1 votes)

1

I have a Datagridview DGV_Historial_Ventas with the sales records and another DGV_Historial_Ventas_Articulos with the items of the sale selected in the first one (DGV_Historial_Ventas)

The DGV_Historial_Ventas has the property multirow , that is to say that I can choose several sales so that in the DGV_Historial_Ventas_Articulos all the articles that belong to those sales are displayed.

Everything works perfect, when I select several rows with CTRL or with SHIFT. But if I make a selection with the mouse (drag and drop) the event does not fire:

    Private Sub DGV_Ventas_Historial_CellClick(sender As Object, e As DataGridViewCellEventArgs) Handles DGV_Ventas_Historial.CellClick

    If DGV_Ventas_Historial.RowCount > 0 And DGV_Ventas_Historial.SelectedRows.Count > 0 Then
        LlenaTablaVentahistorialArticulo(DGV_Ventas_Historial.SelectedRows)
        LlenaGridVentaHistorialArticulo(DGV_Ventas_Historial_Articulos)

        Label_Ventas_HistorialArticulos_Total.Text = "Total: " & DGV_Ventas_Historial.Item("TotalArticulos", e.RowIndex).Value.ToString & " Articulos"
    Else
        If DGV_Ventas_Historial.SelectedRows.Count = 0 Then DGV_Ventas_Historial_Articulos.DataSource = ""
    End If
End Sub

I thought about using the MouseUp event but it uses and the DataGridViewCellMouseEventArgs which has mouse coordinates and I do not know how to use it.

In CellClick use e as DataGridViewCellEventArgs whereby I can use e.rowindex to know the row that is being clicked (which is something I need)

vb.net

asked by Gonzalo 23.05.2016 в 06:22

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2 answers

1

I use this method when I want to delete, I use it for up to 5 objects but a list could be used.

I call the method click on the accept button

Private Sub ElementosSeleccionados(aux As DataGridView)
    Dim id, i As Integer
    Dim idList(5)
    For Each selectedItem As DataGridViewRow In aux.SelectedRows
        'show ids of multiple selected rows
        id = selectedItem.Cells("ID").Value
        idList(i) = id
        i += 1
    Next selectedItem
    Dim sResult As String = ""
    For Each elem As String In idList
        sResult &= elem & ", "
    Next
    MsgBox("Seleccionados" & sResult)
End Sub

answered by 05.12.2018 в 17:54

Doubt about strcopy Experiments in the Google Play Developer Console

score 1 · Accepted Answer

The MouseUp event handler does not receive a DataGridViewCellMouseEventArgs object (which does have RowIndex and ColumnIndex properties), but a MouseEventArgs object (which does not have them).

I can think of two options:

Use the CellMouseUp event whose handler receives a DataGridViewCellMouseEventArgs object through which you can access the row and column in which the event was generated

Use the MouseUp event and obtain the information of the cell in which it is produced using the HitTest method of the DataGridView that gives you a HitTestInfo object with information about the row and column located at a certain position:

Private Sub DataGridView1_MouseUp(sender As Object, e As MouseEventArgs) Handles DataGridView1.MouseUp
    Dim info As DataGridView.HitTestInfo = DataGridView1.HitTest(e.X, e.Y)
    Dim row = info.RowIndex
    Dim column = info.ColumnIndex
End Sub