Question

我的最终结果是来自数据库的数据将填充datagridview。

现在，我限制自己只能调用31个数据，仅此而已。我也有一些错误，例如从日期中调出数据。但是我可以根据零件号调出，但是我想我已经将girdview上的行设置为31，这就是为什么它只能调出31个数据的原因

我尝试了google并更改了日期调用的格式，但是它不起作用

        SQLiteConnection con = new SQLiteConnection("Data Source=|DataDirectory|\\trendchart.db");
        con.Open();
        int i = 0;
        SQLiteCommand Insert = new SQLiteCommand("Select * from d where dateandtime = '" + dateTimePicker1.Value.ToString("dd-MM-yyyy") + "' and Date= '" + dateTimePicker2.Value.AddDays(0).ToString("dd-MM-yyyy") , con);
        SQLiteDataReader dr1 = Insert.ExecuteReader();
        dataGridView2.Rows.Clear();

        dataGridView2.DataSource = null;
        dataGridView2.Refresh();

        this.dataGridView2.Rows.Add();
        this.dataGridView2.Rows.Add();
        this.dataGridView2.Rows.Add();
        this.dataGridView2.Rows.Add();
        this.dataGridView2.Rows.Add();
        this.dataGridView2.Rows.Add();
        this.dataGridView2.Rows.Add();
        this.dataGridView2.Rows.Add();
        this.dataGridView2.Rows.Add();
        this.dataGridView2.Rows.Add();
        this.dataGridView2.Rows.Add();
        this.dataGridView2.Rows.Add();
        dataGridView2.Rows[0].HeaderCell.Value = "Date";
        dataGridView2.Rows[1].HeaderCell.Value = "Day (D) / Night (N)";
        dataGridView2.Rows[2].HeaderCell.Value = "TOP(1)";
        dataGridView2.Rows[3].HeaderCell.Value = "TOP(2)";
        dataGridView2.Rows[4].HeaderCell.Value = "Bottom(1)";
        dataGridView2.Rows[5].HeaderCell.Value = "Bottom(2)";
        dataGridView2.Rows[6].HeaderCell.Value = "X-TOP";
        dataGridView2.Rows[7].HeaderCell.Value = "X-BOT";
        dataGridView2.Rows[8].HeaderCell.Value = "X-T/B";
        dataGridView2.Rows[9].HeaderCell.Value = "Range";
        dataGridView2.Rows[10].HeaderCell.Value = "Employee no";
        dataGridView2.Rows[11].HeaderCell.Value = "Date&time";
        for (int r = 0; r < 31; r++)
        {
            dataGridView2.Rows[0].Cells[r].Style.Font = new Font("Arial", 11, FontStyle.Regular);
            dataGridView2.Rows[1].Cells[r].Style.Font = new Font("Arial", 11, FontStyle.Regular);
            dataGridView2.Rows[2].Cells[r].Style.Font = new Font("Arial", 11, FontStyle.Regular);
            dataGridView2.Rows[3].Cells[r].Style.Font = new Font("Arial", 11, FontStyle.Regular);
            dataGridView2.Rows[4].Cells[r].Style.Font = new Font("Arial", 11, FontStyle.Regular);
            dataGridView2.Rows[5].Cells[r].Style.Font = new Font("Arial", 11, FontStyle.Regular);
            dataGridView2.Rows[6].Cells[r].Style.Font = new Font("Arial", 11, FontStyle.Regular);
            dataGridView2.Rows[7].Cells[r].Style.Font = new Font("Arial", 11, FontStyle.Regular);
            dataGridView2.Rows[8].Cells[r].Style.Font = new Font("Arial", 11, FontStyle.Regular);
            dataGridView2.Rows[9].Cells[r].Style.Font = new Font("Arial", 11, FontStyle.Regular);
            dataGridView2.Rows[10].Cells[r].Style.Font = new Font("Arial", 11, FontStyle.Regular);
            dataGridView2.Rows[11].Cells[r].Style.Font = new Font("Arial", 11, FontStyle.Regular);
            dataGridView2.Rows[6].Cells[r].Style.BackColor = Color.Gray;
            dataGridView2.Rows[7].Cells[r].Style.BackColor = Color.Gray;
            dataGridView2.Rows[8].Cells[r].Style.BackColor = Color.Gray;
            dataGridView2.Rows[9].Cells[r].Style.BackColor = Color.Gray;
            dataGridView2.Rows[10].Cells[r].Style.BackColor = Color.Gray;
            dataGridView2.Rows[11].Cells[r].Style.BackColor = Color.Gray;
        }
        while (dr1.Read())
        {
            string f1 = dr1.GetString(0);
            string f2 = dr1.GetString(1);
            string f3 = dr1.GetString(2);
            string f4 = dr1.GetString(3);
            string f5 = dr1.GetString(4);
            string f6 = dr1.GetString(5);
            string f7 = dr1.GetString(6);
            string f8 = dr1.GetString(7);
            string f9 = dr1.GetString(8);
            string f10 = dr1.GetString(9);
            string f11 = dr1.GetString(10);
            string f12 = dr1.GetString(11);
            dataGridView2.Rows[0].Cells[i].Value = f1;
            dataGridView2.Rows[1].Cells[i].Value = f2;
            dataGridView2.Rows[2].Cells[i].Value = f3;
            dataGridView2.Rows[3].Cells[i].Value = f4;
            dataGridView2.Rows[4].Cells[i].Value = f5;
            dataGridView2.Rows[5].Cells[i].Value = f6;
            dataGridView2.Rows[6].Cells[i].Value = f7;
            dataGridView2.Rows[7].Cells[i].Value = f8;
            dataGridView2.Rows[8].Cells[i].Value = f9;
            dataGridView2.Rows[9].Cells[i].Value = f10;
            dataGridView2.Rows[10].Cells[i].Value = f11;
            dataGridView2.Rows[11].Cells[i].Value = f12;
            i++;

        }

“代码=错误（1），消息= System.Data.SQLite.SQLiteException（0x800007BF）：SQL逻辑错误无法识别的令牌：“'29-12-2018””

Datafrom my database

Error Image

Answer 1

缺少引号，将其添加为：

SQLiteCommand Insert = new SQLiteCommand("Select * from d where dateandtime = '" + dateTimePicker1.Value.ToString("dd-MM-yyyy") + "' and Date= '" + dateTimePicker2.Value.ToString("dd-MM-yyyy") + "'" , con);

根据日期从Sqlite数据库中调出数据

1 个答案: