Question

I have a sample database like below, and I want to display only the red colored records in the datagrid. I have a condition for how to make those two cells red.

Sample Database

For example, I want to display records whose is value less than 10 in the book number column.

I used code like below for making them red.

Code

private void UpdateDataGridViewColor()
{
    if (calledMethod == 2)
    {
        for (int i = 0; i < dataGridView1.RowCount; i++)
        {
            int j = 6;
            DataGridViewCellStyle CellStyle = new DataGridViewCellStyle();
            CellStyle.ForeColor = Color.Red;

            if (isLate(dataGridView1[j, i].Value.ToString()))
            {
                dataGridView1[j, i].Style = CellStyle;
            }
        }
    }
}

I used code something like the following.

Code

private void issueDetails()
{
    calledMethod = 2;
    string connectionPath = @"Data Source=Data\libraryData.dat;Version=3;New=False;Compress=True";

    using (SQLiteConnection connection = new SQLiteConnection(connectionPath))
    {
        SQLiteCommand command = connection.CreateCommand();
        connection.Open();
        string query = "SELECT bookno as 'Book No.',studentId as 'Student ID',  title as 'Title', author as 'Author', description as 'Description', issuedDate as 'Issued Date', dueDate as 'Due Date' FROM issuedBooks";
        command.CommandText = query;
        command.ExecuteNonQuery();

        SQLiteDataAdapter da = new SQLiteDataAdapter(command);
        DataSet ds = new DataSet();
        da.Fill(ds, "issuedBooks");
        int c = ds.Tables["issuedBooks"].Rows.Count;
        dataGridView1.DataSource = ds.Tables["issuedBooks"];
        dataGridView1.Sort(dataGridView1.Columns["Student ID"], ListSortDirection.Ascending);
        dataGridView1.ReadOnly = true;
        connection.Close();
        this.Totals.Text = "Total Issued Books : " + Convert.ToString(c);
    }
}

Answer 1

Answer

public void onlyDueReport()
    {
        List<int> array = new List<int>();
        string connectionPath = @"Data Source=Data\libraryData.dat;Version=3;New=False;Compress=True";
        using (SQLiteConnection connection = new SQLiteConnection(connectionPath))
        {
            SQLiteCommand command = connection.CreateCommand();
            connection.Open();
            string query = "SELECT bookno as 'Book No.',studentId as 'Student ID',  title as 'Title', author as 'Author', description as 'Description', issuedDate as 'Issued Date', dueDate as 'Due Date' FROM issuedBooks";
            command.CommandText = query;
            command.ExecuteNonQuery();
            SQLiteDataAdapter da = new SQLiteDataAdapter(command);
            DataSet ds = new DataSet();
            da.Fill(ds, "issuedBooks");
            int c = ds.Tables["issuedBooks"].Rows.Count;
            if (c > 0)
            {
                for (int row = c; row > 0; row--)
                {
                    string date = (string)(ds.Tables["issuedBooks"].Rows[c - row]["Due Date"]);
                    if (isLate(date))
                    {
                        int a = Convert.ToInt32(ds.Tables["issuedBooks"].Rows[c - row]["Book No."]);
                        array.Add(a);
                    }
                }
            }

            query = "SELECT bookno as 'Book No.',studentId as 'Student ID',  title as 'Title', author as 'Author', description as 'Description', issuedDate as 'Issued Date', dueDate as 'Due Date' FROM issuedBooks WHERE bookno IN (";
            int[] cool = array.ToArray();
            int cou = 0;
            foreach (int a in cool)
            {
                query += a;
                if (cou < cool.Length - 1) { query += ','; }
                cou++;
            }
            query += ")";

            Console.WriteLine(query);
            command.CommandText = query;
            command.ExecuteNonQuery();
            DataSet ds1 = new DataSet();
            da.Fill(ds1, "issuedBooks");
            dataGridView1.DataSource = ds1.Tables["issuedBooks"];
            this.Totals.Text = "";
            Report_Viewer.StatusPText = " Total Pending Books :  " + ds1.Tables["issuedBooks"].Rows.Count; 
        }

    }