Question

I am implementing the following requests.

1. User select an item in a ComboBox.
2. The SelectedIndexChanged event handling code formats some of the cells according to the selected value of the ComboBox. However, it doesn’t work.

.

void Combobox1_OnSelectedIndexChanged(object sender, ...)
{
    foreach (DataGridViewRow row in GridView1.Rows)
    {
        var c = GridView1.Columns.Count;
        for (int i = 0; i < c; i++)
        {
            if (...some condition using selected value...) 
            {
                 row.Cells[i].Style.BackColor = Color.Green;
                 row.Cells[i].ToolTipText = "test";
            }
        }
    }

Question: Should it be added to event CellFormatting, .. events? However, the algorithm is depends on the event of combobox’s SelectedIndexChanged?

Answer 1

private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
        {

            var c = dataGridView1.Columns.Count;
             foreach (DataGridViewRow row in this.dataGridView1.Rows)
                {
                    if (comboBox1.SelectedValue==1){
                                row.Cells[0].Style.BackColor = Color.Green;
                                row.Cells[0].ToolTipText = "test";
                        }

            else
            {
                        row.Cells[0].Style.BackColor = Color.Blue;
                        row.Cells[0].ToolTipText = "test";
                }
            }
    }

Thanks