Datagridview painting

David Smith

Hi Added this peace of code, Im trying to to just click any cell ,row or column during runtime and highlight with a color.

Instead it highlights everything instead. I think is because of the loop. let me try something else. If you have any ideas please dont hesitate

            try
            {
                colorDialog1.ShowDialog();

                for (int i = 0; i < dataGridView2.Rows.Count; i++)
                {

                    /*if (Convert.ToUInt32(dataGridView2.Rows[i].Cells[9].Value) == 0)
                    {
                        this.dataGridView2.Rows[i].DefaultCellStyle.BackColor = Color.Red;
                    }*/
                    if (Convert.ToUInt32(dataGridView2.Rows[i].Cells[i].Value) == 0)
                    {

                        this.dataGridView2.Rows[i].DefaultCellStyle.BackColor = colorDialog1.Color;
                    }

                }
            }
            catch (System.Exception ex)
            {
                System.Windows.Forms.MessageBox.Show(ex.Message);
            }

5 Replies

Know the answer? Post it — somebody with the same question will find it here.

paul daniel16y ago
Refer this link

http://csharpdotnetfreak.blogspot.com/2009/04/highlight-gridview-mouseover-javascript.html

http://www.highoncoding.com/Articles/172_Changing_GridView_Row_Color_OnMouseOver.aspx
naura pax16y ago
dataGridView2.CurrentCell will only give you a single cell.. and loop will not help you there, maybe you should try for dataGridView2.CurrentRow.DefaultCellStyle.BackColor= colorDialog1.Color;
by the way this is the one that will work for sure
dataGridView2.Rows[dataGridView2.CurrentCell.RowIndex].DefaultCellStyle.BackColor= colorDialog1.Color;
David Smith16y ago
actually this works, i just got to get it to select multiple cells

dataGridView2.CurrentCell.Style.BackColor = colorDialog1.Color;
David Smith16y ago
I really need to do something like this

dataGridView2.Rows[dataGridView2.CurrentCell.Value].DefaultCellStyle.BackColor = colorDialog1.Color;

but you cant convert object to int
naura pax16y ago
I think you need two for loops
for (int i = 0; i < dataGridView2.Rows.Count; i++)
                {
                  for(int j=0;j
               {
                    if (Convert.ToUInt32(dataGridView2.Rows[i].Cells[j].Value) == 0)
                    {

                        this.dataGridView2.Rows[i].DefaultCellStyle.BackColor = colorDialog1.Color;
                    }
               }

                }
            }