Question

我正在使用Visual Studio2010。使用OleDB，如何将Excel工作表的选定列和行导入到我的datagridView1中？假设我的行和列从B13开始并获得至少B13的20行。

有人有示例代码或链接可以帮助我做到这一点吗？非常感谢！

Answer 1

您可以通过以下命令执行此操作：

"SELECT * FROM [<SheetName>$<optional range>]";
//Ex : OleDbCommand OleConnection = new OleDbCommand("SELECT * FROM [Sheet1$B13:B33]", Con);

来源：Select cell adress from Excel using OLEDB in C#

完整代码在这里：

        try
        {
            OpenFileDialog dlg_im = new OpenFileDialog();
            dlg_im.Filter = "Excel File|*.xls;*.xlsx;*.xlsm";
            //dlg_im.Filter = "Excel File|*.xlsx";

            if (dlg_im.ShowDialog() == DialogResult.OK)
            {
                dataGridView1.Rows.Clear();
                textBox1.Text = dlg_im.FileName;

                string name = "Sheet1";
                string constr = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + textBox1.Text + ";Extended Properties='Excel 12.0 XML;HDR=YES;';";

                OleDbConnection Con = new OleDbConnection(constr);
                OleDbCommand OleConnection = new OleDbCommand("SELECT * FROM [Sheet1$B13:B33]", Con);
                Con.Open();

                OleDbDataAdapter sda = new OleDbDataAdapter(OleConnection);
                DataTable data = new DataTable();
                sda.Fill(data);
                dataGridView1.DataSource = data;

                dataGridView1.ReadOnly = true;
                dataGridView1.Columns[0].Width = 320;
                dataGridView1.ClearSelection();
            }
        }
        catch (Exception ex)
        {
            MessageBox.Show(ex.ToString());
        }


        MessageBox.Show("Done");

Answer 2

如果要将Excel文件的列导入到可用datagridview中的空列。

例如：您具有如下datagridview，并且您想要读取excel文件并导入到“类”列中

假设您要将Excel文件的A1到A11范围的数据添加到datagridview的“类”（第二列）中

            private void button3_Click(object sender, EventArgs e)
            {
            try
            {
                OpenFileDialog dlg_im = new OpenFileDialog();
                dlg_im.Filter = "Excel File|*.xls;*.xlsx;*.xlsm";
                //dlg_im.Filter = "Excel File|*.xlsx";

                if (dlg_im.ShowDialog() == DialogResult.OK)
                {
                    textBox1.Text = dlg_im.FileName;

                    string name = "Sheet1";
                    string constr = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + textBox1.Text + ";Extended Properties='Excel 12.0 XML;HDR=YES;';";

                    OleDbConnection Con = new OleDbConnection(constr);
                    OleDbCommand OleConnection = new OleDbCommand("SELECT *FROM [Sheet1$A1:A11]", Con);
                    Con.Open();

                    OleDbDataAdapter sda = new OleDbDataAdapter(OleConnection);
                    DataTable data = new DataTable();
                    sda.Fill(data);


                    int i = 0;//The position of row in datagridview you want to start adding
                    foreach (DataRow dr in data.Rows)
                    {
                        Console.WriteLine(dr.ItemArray[0]);
                        dataGridView1.Rows[i].Cells[2].Value = dr.ItemArray[0];//Cells[2] --> Columns[2] --> Column Class
                        i++;
                    }

                    dataGridView1.ClearSelection();
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.ToString());
            }
        }

这是输出：