C# 如何在C中的datagridview中导入多个excel选定文件#

我在WFA中有“导入按钮”来选择要导入的文件，我的代码加载我选择的文件，但它只导入最后一个文件。 这里是加载按钮，我可以在datagridview中加载文件，但我不能导入它们，我只导入最后一个。我如何才能导入所有选定的文件，我真的厌倦了这种协助请帮助

在这里输入代码

   private void Button1_Click(object sender, EventArgs e)
    {
        try
        {
            OpenFileDialog openFileDialog1 = new OpenFileDialog();
            openFileDialog1.Filter = "XML Files, Text Files, Excel Files|*.xlsx; *.xls; *.xml; *.txt; ";
            openFileDialog1.Multiselect = true;

            DataTable table = new DataTable();

            if (openFileDialog1.ShowDialog() == DialogResult.OK)
            {
                foreach (String file in openFileDialog1.FileNames)
                {
                    //tb_path is textbox
                    tb_path.Text = file;
                    // excelFilePath_com = tb_path.Text;
                    string constr = string.Format("Provider = Microsoft.ACE.OLEDB.12.0; Data Source =" + tb_path.Text + ";Extended Properties = \"Excel 12.0; HDR=Yes;\"; ");

                    OleDbConnection con = new OleDbConnection(constr);
                    con.Open();

                    DataTable dt1 = con.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);
                    table.Merge(dt1);
                    drop_down_sheet.DataSource = dt1;
                    //dro_down_sheet is combobox to choose which sheet to import 
                    drop_down_sheet.DisplayMember = "TABLE_NAME";
                    drop_down_sheet.ValueMember = "TABLE_NAME";
                }
            }
            dataGridView1.DataSource = table;
        }
        catch (Exception e1)
        {
            MessageBox.Show(e1.Message + e1.StackTrace);
        }
    }

private void Button1_Click(object sender, EventArgs e)
    {
        try
        {
            string constr = string.Format("Provider = Microsoft.ACE.OLEDB.12.0; Data Source =" + tb_path.Text + ";Extended Properties = \"Excel 12.0; HDR=Yes;\"; ");
            OleDbConnection con = new OleDbConnection(constr);
            OleDbDataAdapter sda = new OleDbDataAdapter("Select * From[" + drop_down_sheet.SelectedValue + "]", con);
            DataTable dt = new DataTable();
            sda.Fill(dt);
            foreach (DataRow row in dt.Rows)
            {
                dataGridView1.DataSource = dt;
            }
        }
        catch (Exception ex)
        {
            MessageBox.Show(ex.Message,
         "Important Note",
         MessageBoxButtons.OK,
         MessageBoxIcon.Error,
         MessageBoxDefaultButton.Button1);

        }
    }

这是我的导入按钮：

在这里输入代码

   private void Button1_Click(object sender, EventArgs e)
    {
        try
        {
            OpenFileDialog openFileDialog1 = new OpenFileDialog();
            openFileDialog1.Filter = "XML Files, Text Files, Excel Files|*.xlsx; *.xls; *.xml; *.txt; ";
            openFileDialog1.Multiselect = true;

            DataTable table = new DataTable();

            if (openFileDialog1.ShowDialog() == DialogResult.OK)
            {
                foreach (String file in openFileDialog1.FileNames)
                {
                    //tb_path is textbox
                    tb_path.Text = file;
                    // excelFilePath_com = tb_path.Text;
                    string constr = string.Format("Provider = Microsoft.ACE.OLEDB.12.0; Data Source =" + tb_path.Text + ";Extended Properties = \"Excel 12.0; HDR=Yes;\"; ");

                    OleDbConnection con = new OleDbConnection(constr);
                    con.Open();

                    DataTable dt1 = con.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);
                    table.Merge(dt1);
                    drop_down_sheet.DataSource = dt1;
                    //dro_down_sheet is combobox to choose which sheet to import 
                    drop_down_sheet.DisplayMember = "TABLE_NAME";
                    drop_down_sheet.ValueMember = "TABLE_NAME";
                }
            }
            dataGridView1.DataSource = table;
        }
        catch (Exception e1)
        {
            MessageBox.Show(e1.Message + e1.StackTrace);
        }
    }

private void Button1_Click(object sender, EventArgs e)
    {
        try
        {
            string constr = string.Format("Provider = Microsoft.ACE.OLEDB.12.0; Data Source =" + tb_path.Text + ";Extended Properties = \"Excel 12.0; HDR=Yes;\"; ");
            OleDbConnection con = new OleDbConnection(constr);
            OleDbDataAdapter sda = new OleDbDataAdapter("Select * From[" + drop_down_sheet.SelectedValue + "]", con);
            DataTable dt = new DataTable();
            sda.Fill(dt);
            foreach (DataRow row in dt.Rows)
            {
                dataGridView1.DataSource = dt;
            }
        }
        catch (Exception ex)
        {
            MessageBox.Show(ex.Message,
         "Important Note",
         MessageBoxButtons.OK,
         MessageBoxIcon.Error,
         MessageBoxDefaultButton.Button1);

        }
    }

---

谢谢：

希望我没有误解你的问题。。。 您只能将一个源绑定到一个组合框（我认为） 如果您想为每个combobox项绑定一个表，那么它必须是不同的东西

 private void Button1_Click(object sender, EventArgs e)
 {
    try
    {
        OpenFileDialog openFileDialog1 = new OpenFileDialog();
        openFileDialog1.Filter = "XML Files, Text Files, Excel Files|*.xlsx; *.xls; *.xml; *.txt; ";
        openFileDialog1.Multiselect = true;

        DataTable table = new DataTable();

        if (openFileDialog1.ShowDialog() == DialogResult.OK)
        {
            foreach (String file in openFileDialog1.FileNames)
            {
                //tb_path is textbox
                tb_path.Text = file;
                // excelFilePath_com = tb_path.Text;
                string constr = string.Format("Provider = Microsoft.ACE.OLEDB.12.0; Data Source =" + tb_path.Text + ";Extended Properties = \"Excel 12.0; HDR=Yes;\"; ");

                OleDbConnection con = new OleDbConnection(constr);
                con.Open();

                DataTable dt1 = con.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);
                table.Merge(dt1);
            }
        }
            drop_down_sheet.DataSource = table;
            //dro_down_sheet is combobox to choose which sheet to import 
            drop_down_sheet.DisplayMember = "TABLE_NAME";
            drop_down_sheet.ValueMember = "TABLE_NAME";
        dataGridView1.DataSource = table;
    }
    catch (Exception e1)
    {
        MessageBox.Show(e1.Message + e1.StackTrace);
    }
}

---

我想你需要这个，我有相同的列名和不同的单元格值，我想把行放在后面，你有没有其他的想法，没有merege可能会创建一个包含所有文件的新excel文件。但是我怎样才能用Aspose.cell实现呢你能在代码中告诉我吗