How to get dataset value in textbox on timer in C#

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C#

TextBoxBase

dataset

timer

Hello Guys ! i have a issue i hope you help me
i want to display dataset value in textbox here am using code
please check it

private void timer2_Tick(object sender, EventArgs e)
        {
            string connStr = @"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=D:\Restaurant.accdb;Persist Security Info=False;";
            //string query = "SELECT [Column3] As [Table No],SUM(Column1) As Price,[Receipt No],Date From Total Group By [Column3],[Receipt No],Date";
            //string query = "Select Column3 As [Table No],SUM(Column1) As [Price],[Receipt No],Date FROM Total GROUP BY [Column3],[Receipt No],Date";
            string query = "Select Report From Total";
            using (OleDbConnection conn = new OleDbConnection(connStr))
            {
                using (OleDbDataAdapter adapter = new OleDbDataAdapter(query, conn))
                {
                    conn.Open();
                    DataSet ds = new DataSet();
                    if (ds != null)
                    {
                        adapter.Fill(ds);
                        textBox63.Text = ds.Tables[0].ToString();
                        conn.Close();
                        if (dataGridView1.Rows.Count == 1)
                        {
                            MessageBox.Show("Data is Empty", "RETURN FORM", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
                            this.Close();
                        }
                        else
                        {
                         //   textBox63.Text = ds.Tables[0].ToString();
                        }
                    }
                }
            }

out and give me best solution of this problem

What I have tried:

private void timer2_Tick(object sender, EventArgs e)
{
string connStr = @"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=D:\Restaurant.accdb;Persist Security Info=False;";
string query = "Select Sum(Report) From Total";
using (OleDbConnection conn = new OleDbConnection(connStr))
{
using (OleDbDataAdapter adapter = new OleDbDataAdapter(query, conn))
{
conn.Open();
DataSet ds = new DataSet();
if (ds != null)
{
adapter.Fill(ds);
textBox63.Text = ds.Tables[0].ToString();
conn.Close();
}
}
}