在DataGridview行C＃中更改颜色

Question

I now there are a lot of other people who asked the same question and got an answer. but in my case i cant seem to get this to work. I have read a couple of posts that suggests using DefaultCellStyle on each row. I have done the same but i the colors do not change.

this is my code:

private void MyHistoryMainControl_Load(object sender, EventArgs e)
{
    editedShipmentGrid.DataSource = handler.GetEditedShipments();
    foreach (DataGridViewRow row in editedShipmentGrid.Rows)
    {
        if (string.IsNullOrWhiteSpace(row.Cells[54].FormattedValue.ToString()))
        {
            row.DefaultCellStyle.ForeColor = Color.Blue;
        }

        if (string.IsNullOrWhiteSpace(row.Cells[55].FormattedValue.ToString()))
        {
            row.DefaultCellStyle.ForeColor = Color.Red;
        }
    }
}

I am running this code in the Load method of the UserControl i am using. The data loads fine in the DataGridView but the colors do not change. I also checked the bool value of my condition and it it should change color. What am i doing wrong here?

Answer 1

I have found the solution. I had to bind the data right after the InitializeComponent(); method. And in my Load method i change the colors depending on a cell value..

this is the solution:

public MyHistoryMainControl()
{
    InitializeComponent();
    editedShipmentGrid.DataSource = handler.GetEditedShipments();
}

private void MyHistoryMainControl_Load(object sender, EventArgs e)
{
    foreach (DataGridViewRow row in editedShipmentGrid.Rows)
    {
        if (string.IsNullOrWhiteSpace(row.Cells[54].FormattedValue.ToString()))
        {
            row.DefaultCellStyle.ForeColor = Color.Blue;
        }

        if (string.IsNullOrWhiteSpace(row.Cells[55].FormattedValue.ToString()))
        {
            row.DefaultCellStyle.ForeColor = Color.Red;
        }
    }
}