DataGridView without selected row at the beginning

Question

In my WinForms I have DataGridView. I wanted to select full row at once so I set SelectionMode as FullRowSelect. And now I have problem, b

Answer 1

This work for me for clear selection on databind

Protected Sub GridCancel_DataBinding(sender As Object, e As EventArgs) Handles GridCancel.DataBinding
    GridCancel.SelectedIndex = -1

End Sub

Answer 2

Try This may be helpful

private void dgv_order_RowsAdded(object sender, DataGridViewRowsAddedEventArgs e)
        {
            dgv_order.CurrentCell.Selected = false;
            dgv_order.ClearSelection();
        }

Answer 3

Just put dataGridView1.ClearSelection(); in load event of the form.

Answer 4

You can call dataGridView.ClearSelection() method inside form_Load event like this...

    private void Form1_Load(object sender, EventArgs e)
    {
     // You will get selectedCells count 1 here
     DataGridViewSelectedCellCollection selectedCells = dataGridView.SelectedCells;
     // Call clearSelection 
     dataGridView.ClearSelection();
     // Now You will get selectedCells count 0 here
     selectedCells = dataGridViewSchedule.SelectedCells;
    }

Answer 5

You should try to put in Shown event datagridView.ClearCelection() and also datagridView.CurrentCell=null and for example if you want to select row for deleting or changing informations just do if(datagridView.CurrentCell==null){ MessageBox.Show("You must select row");} it works for me

Answer 6

Sometimes, when you reload your form without closing your program, the first row will be highlighted. But it will not be selected, and you will get -1 for selected row index.

You can do it just like this:

 1. Store default styles when the form is loading:

 Public Class aRoots
    Dim df1, df2, df3, df4 As Color
    Private Sub aRoots_Load(sender As Object, e As EventArgs) Handles Me.Load
            df1 = DGV_Root.DefaultCellStyle.SelectionBackColor
            df2 = DGV_Root.DefaultCellStyle.BackColor
            df3 = DGV_Root.DefaultCellStyle.SelectionForeColor
            df4 = DGV_Root.DefaultCellStyle.ForeColor

 2. Change cell styles when interacting with datagridview:

Private Sub LoadRoot()
       For i = 0 To 5
                DGV_Root.Rows.Add()
                For j = 0 To 3
                    DGV_Root.Item(j, i).Value = ...
                Next
            Next
        'DGV_Root.ClearSelection() ==> instead of this use 2 lines below
        DGV_Root.DefaultCellStyle.SelectionBackColor = df2
        DGV_Root.DefaultCellStyle.SelectionForeColor = df4
    End Sub

 3. Change cell styles to default when selection is being changed like cell_click or cell_double click:

Private Sub DGV_Root_CellMouseClick(sender As Object, e As DataGridViewCellMouseEventArgs) Handles DGV_Root.CellMouseClick
        DGV_Root.DefaultCellStyle.SelectionBackColor = df1
        DGV_Root.DefaultCellStyle.SelectionForeColor = df3


...
End Sub

 4. restore all to default when u want to close form:

Private Sub PbClose_Click(sender As Object, e As EventArgs) Handles PbClose.Click
        BtnCancel.PerformClick()
        DGV_Root.DefaultCellStyle.SelectionBackColor = df1
        DGV_Root.DefaultCellStyle.BackColor = df2
        DGV_Root.DefaultCellStyle.SelectionForeColor = df3
        DGV_Root.DefaultCellStyle.ForeColor = df4
        Me.Close()
End Sub

Hope this help you guys.