DataGridView changing cell background color

Question

I have the following code :

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


        

Answer 1

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:

///
 Instantiate the DataGridView Control. 
private DataGridView dgView = new DataGridView;

///
 Method to configure DataGridView Control. 
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;
}

///
 The actual Method that will re-design (Paint) DataGridView Cells. 
 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;
         }
     }
 }

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

/// 
 Occurrs when a new Row is Created. 
/// 
/// 
private void DataGridView_RowsAdded(object sender, DataGridViewRowsAddedEventArgs e)
{ 
    DataGridView_PaintCells(); 
}

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