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如何使用 EPPlus 將過濾后的 DataGridView 數據保存到 Excel 中?

[英]How can I save filtered DataGridView data into Excel using EPPlus?

如何使用 EPPlus 將過濾后的數據從DataGridView導入 Excel? 我不知道從哪里開始,我還沒有找到與我的問題類似的東西。

這是我的保存按鈕的代碼:

SaveFileDialog saveFileDialog1 = new SaveFileDialog();
using (MySqlConnection con = new MySqlConnection(connectionString))
{
    using (MySqlCommand cmd = new MySqlCommand("SELECT * FROM statusrouted.routed", con))
    {
        cmd.CommandType = CommandType.Text;
        using (MySqlDataAdapter sda = new MySqlDataAdapter(cmd))
        {
            using (DataTable dt = new DataTable())
            {
                using (ExcelPackage pck = new ExcelPackage())
                {
                    sda.Fill(dt);


                    ExcelWorksheet ws = pck.Workbook.Worksheets.Add(DateTime.Today.ToString("MMMM-yyyy"));

                    ws.Cells["A2"].LoadFromDataTable( dt, true);


                    saveFileDialog1.Title = "Save as Excel";
                    saveFileDialog1.FileName = "";
                    saveFileDialog1.Filter = "Excel files(2007)|*.xlsx";

                    if (saveFileDialog1.ShowDialog() != DialogResult.Cancel)
                    {
                        try
                        {
                            pck.SaveAs(new FileInfo(@"" + saveFileDialog1.FileName));
                            recentsToolStripMenuItem1.AddRecentItem(@"" + saveFileDialog1.FileName);
                        }
                        catch (Exception)
                        {
                            DialogResult reminder = MessageBox.Show("Cannot save file, file opened in another program.\nClose it first! ", "Save Failed", MessageBoxButtons.OK);
                        }
                    }
                }
            }
        }
    }
}

這是textbox_textchanged事件中我的過濾器的代碼:我不知道這是否重要。

DataView DV = new DataView(dt);
string oks;
if (comboBox1.SelectedIndex == 0)
{
    oks = "ffrom";
}
else if (comboBox1.SelectedIndex == 1)
{
    oks = "office";
}
else if (comboBox1.SelectedIndex == 2)
{
    oks = "code";
}

else
{
    if (comboBox1.SelectedIndex == 3)
    {
        oks = "datein";
    }
    else
    {
        oks = "dateout";
    }
}

DV.RowFilter = string.Format( oks+ " LIKE '%{0}%'", textBox5.Text);
this.dataGridView1.DataSource = DV;
dataGridView1.ClearSelection();

找到了! 我只是改變了這個:

ws.Cells["A2"].LoadFromDataTable(dt, true);

對此:

ws.Cells["A2"].LoadFromDataTable((this.maindgv.DataSource as DataTable).DefaultView.ToTable(), true);

我不太確定它是如何工作的,但我認為這是因為dt是加載到DataGridView上的數據,而(this.maindgv.DataSource as DataTable).DefaultView.ToTable()是當前顯示在DataGridView上的數據。 我不確定。

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