Datagridview changing the row backcolor based on value of coloum in the same grid view

[User 3950922]

Hi all, I have been trying to change the backcolor of specific rows depending on a condition,but when the condition is met the entire grid color changes. I already tried this and many more like this but none of them work, DataGridViewCellStyle style2 = new dataGridViewCellStyle() style2.BackColor = Color.Red; dataGridView1.RowsDefaultCellStyle.BackColor = Color.Red; There is something which I am doing wrong. Please help me to fix this.

[Pedram Behroozi]

dataGridView1.RowsDefaultCellStyle.BackColor = Color.Red;
dataGridView1.Rows[index].DefaultCellStyle.BackColor = Color.Red;

And your index can change depending on your condition. [Edit] And if you want to change multiple rows BackColor:

DataGridViewSelectedRowCollection coll = dataGridView1.SelectedRows;
foreach (DataGridViewRow row in coll)
row.DefaultCellStyle.BackColor = Color.Red;

[/Edit]

When you're alone in the Dark, Fear will protect you...

modified on Sunday, November 2, 2008 8:41 AM

[User 3950922]

Hi Pedram , I tried this as well it does not work, first I selected all rows which meet the specified condition This is just to show the selection, Its alternate rows here but in real scenario its any random row. int yyy = 0; foreach (DataGridViewRow rowss in dataGridView1.Rows) { if (yyy % 2 == 0) { rowss.Selected = true; } else { } yyy++; } , then I used your or each statement but still I get the same results. There is no color on the datagridview. This Datagridview is placed on a user Object and It is added on a form at the run time.Does it make any difference ? Regards Omer

[Pedram Behroozi]

But following completely worked for me:

int y = 0;
foreach (DataGridViewRow row in dataGridView1.Rows)
{
if (y % 2 == 0)
row.Selected = true;
y++;
}

DataGridViewSelectedRowCollection coll = dataGridView1.SelectedRows;
foreach (DataGridViewRow row in coll)
    row.DefaultCellStyle.BackColor = Color.Red;

But why did you act like that? It's O(n) = 2n You can:

int y = 0;
foreach (DataGridViewRow row in dataGridView1.Rows)
{
if (y % 2 == 0)
row.DefaultCellStyle.BackColor = Color.Red;
y++;
}

DataGridViewSelectedRowCollection coll = dataGridView1.SelectedRows;
foreach (DataGridViewRow row in coll)
    row.DefaultCellStyle.BackColor = Color.Red;

Member 3953856 wrote:

.Does it make any difference ?

I don't think so. You should just point to your DataGridView correctly.

When you're alone in the Dark, Fear will protect you...

[richardw48]

Put your code into the cellformat event of the datagridview

[User 3950922]

Yes , putting the code on the cell formatting event of the datagridview worked, I mentioned that I was using a user control. The data grid was on the User control. If not a user control then the other stuff works fine. thanks