DataGridView changing cell background color

Question

I have the following code :

private void dgvStatus_DataBindingComplete(object sender, DataGridViewBindingCompleteEventArgs e)
{
    foreach (DataGridViewRow          


        

Answer 1

You can use the VisibleChanged event handler.

private void DataGridView1_VisibleChanged(object sender, System.EventArgs e)
{
    var grid = sender as DataGridView;
    grid.Rows[0].Cells[0].Style.BackColor = Color.Yellow;
}

Answer 2

try the following (in RowDataBound method of GridView):

protected void GridViewUsers_RowDataBound(object sender, GridViewRowEventArgs e)
{
    // this will only change the rows backgound not the column header 

    if (e.Row.RowType == DataControlRowType.DataRow)
    {
        e.Row.Cells[0].BackColor = System.Drawing.Color.LightCyan; //first col
        e.Row.Cells[1].BackColor = System.Drawing.Color.Black; // second col
    }
}

Answer 3

Simply create a new DataGridViewCellStyle object, set its back color and then assign the cell's style to it:

    DataGridViewCellStyle style = new DataGridViewCellStyle();
    style.BackColor = Color.FromArgb(((GesTest.dsEssais.FMstatusAnomalieRow)row.DataBoundItem).iColor);
    style.ForeColor = Color.Black;
    row.Cells[color.Index].Style = style;

Answer 4

protected void grdDataListeDetay_RowDataBound(object sender, GridViewRowEventArgs e)
{
    if (e.Row.RowType == DataControlRowType.DataRow)
    {
        if (e.Row.Cells[3].Text != "0")
        {
            for (int i = 0; i <= e.Row.Cells.Count - 1; i++)
            {
                e.Row.Cells[i].BackColor = System.Drawing.Color.Beige;
            }
        }
    }
}

Answer 5

Similar as shown and mentioned:

Notes: Take into consideration that Cells will change their color (only) after the DataGridView Control is Visible. Therefore one practical solution would be using the:

VisibleChanged Event

In case you wish to keep your style when creating new Rows; also subscribe the:

RowsAdded Event

Example bellow:

///<summary> Instantiate the DataGridView Control. </summary>
private DataGridView dgView = new DataGridView;

///<summary> Method to configure DataGridView Control. </summary>
private void DataGridView_Configuration()
{
    // In this case the method just contains the VisibleChanged event subscription.

    dgView.VisibleChanged += DgView_VisibleChanged;

    // Uncomment line bellow in case you want to keep the style when creating new rows.
    // dgView.RowsAdded += DgView_RowsAdded;
}

///<summary> The actual Method that will re-design (Paint) DataGridView Cells. </summary>
 private void DataGridView_PaintCells()
 {
     int nrRows = dgView.Rows.Count;
     int nrColumns = dgView.Columns.Count;
     Color green = Color.LimeGreen;

     // Iterate over the total number of Rows
     for (int row = 0; row < nrRows; row++)
     {
         // Iterate over the total number of Columns
         for (int col = 0; col < nrColumns; col++) 
         {
             // Paint cell location (column, row)
             dgView[col, row].Style.BackColor = green;
         }
     }
 }

///<summary> The DataGridView VisibleChanged Event. </summary>
private void DataGridView_VisibleChanged(object sender, EventArgs e)
{
    DataGridView_PaintCells();
}

/// <summary> Occurrs when a new Row is Created. </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void DataGridView_RowsAdded(object sender, DataGridViewRowsAddedEventArgs e)
{ 
    DataGridView_PaintCells(); 
}

Finally: Just call the DataGridView_Configuration() (method)
i.e: Form Load Event.

Answer 6

dataGridView1[row, col].Style.BackColor = System.Drawing.Color.Red;