以编程方式隐藏DataGridView列位置0和1

Question

Im trying to set column on position 0 & 1 visibility to false

My Code:

                    mainContenttabControl.TabPages.Add(myTabPage);
                    mainContenttabControl.TabPages[i].Controls.Add(new DataGridView()
                    {
                        Name = "dataGridView_" + tabTitle,
                        Dock = DockStyle.Fill,
                        DataSource = selectedSensors,
                        AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.Fill,
//SET HERE COLUMN VISIBLITY = false
                    });

But i cant acces here the property .Column i also tryed to write a function after that gets called after my "setDataGridViews()" function but it only works when the Form is allready loaded

private void hideDatalayerColumns()
        {
            int dataGridViewHardwareIndex = mainContenttabControl.TabPages[0].Controls.IndexOfKey("dataGridView_" + "Hardware");
            int dataGridViewSensorsIndex = mainContenttabControl.TabPages[1].Controls.IndexOfKey("dataGridView_" + "Sensors");
            int dataGridViewServiceIndex = mainContenttabControl.TabPages[2].Controls.IndexOfKey("dataGridView_" + "Service");
            int dataGridViewRepairIndex = mainContenttabControl.TabPages[3].Controls.IndexOfKey("dataGridView_" + "Repair");

            if (dataGridViewHardwareIndex >= 0)
            {
                DataGridView myTabGridViewHardware = mainContenttabControl.TabPages[0].Controls[dataGridViewHardwareIndex] as DataGridView;
                myTabGridViewHardware.Columns[0].Visible = false;
                myTabGridViewHardware.Columns[1].Visible = false;
            }
            if (dataGridViewSensorsIndex >= 0)
            {
                DataGridView myTabGridViewSensors = mainContenttabControl.TabPages[1].Controls[dataGridViewSensorsIndex] as DataGridView;
                myTabGridViewSensors.Columns[0].Visible = false;
                myTabGridViewSensors.Columns[1].Visible = false;
            }
            if (dataGridViewServiceIndex >= 0)
            {
                DataGridView myTabGridViewService = mainContenttabControl.TabPages[2].Controls[dataGridViewServiceIndex] as DataGridView;
                myTabGridViewService.Columns[0].Visible = false;
                myTabGridViewService.Columns[1].Visible = false;
            }
            if (dataGridViewRepairIndex >= 0)
            {
                DataGridView myTabGridViewRepair = mainContenttabControl.TabPages[3].Controls[dataGridViewRepairIndex] as DataGridView;
                myTabGridViewRepair.Columns[0].Visible = false;
                myTabGridViewRepair.Columns[1].Visible = false;
            }
        }

Is there a workaround or a better solution that my two columns is .Visible = false ?

The funny part is thaht it is there...

Answer 1

If you want to hide the first two columns of several DGVs in a Form is what I understand, then you could use the following Linq recursive function to return your DGVs and hide the target columns:

private IEnumerable<DataGridView> GetAllDGVs(Control container)
{
    var controls = container.Controls.Cast<Control>();
    return controls.SelectMany(c => GetAllDGVs(c))
        .Concat(controls.OfType<DataGridView>());
}

and the usage:

private void hideDatalayerColumns()
{
    GetAllDGVs(this).ToList().ForEach(dgv =>
    {
        dgv.Columns[0].Visible = false;
        dgv.Columns[1].Visible = false;
    });
}

Good luck.