Question

我目前正在Windows窗体应用程序项目中，将Excel文件数据导入数据网格并基于组合框应用过滤器。数据导入已完成。我相信下一部分应该在按钮中应用过滤代码进行过滤，这就是我目前遇到的问题。预先感谢。

用于导入和显示数据的代码片段。

private void btnOpen_Click(object sender, EventArgs e)
    {
        try
        {
            string constr = "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 [" + dropdown_sheet.SelectedValue + "]", con);
            sda.Fill(dt);

            foreach (DataRow row in dt.Rows)
            {
                dataGridView.DataSource = dt;
            }

            comboBox1.Items.Clear();
            foreach (DataGridViewRow row in dataGridView.Rows) 
            {
                comboBox1.Items.Add(row.Cells[0].Value.ToString());
                comboBox2.Items.Add(row.Cells[1].Value.ToString());
                comboBox3.Items.Add(row.Cells[2].Value.ToString());
                comboBox4.Items.Add(row.Cells[3].Value.ToString());
                comboBox5.Items.Add(row.Cells[4].Value.ToString());
                comboBox6.Items.Add(row.Cells[5].Value.ToString());
                comboBox7.Items.Add(row.Cells[6].Value.ToString());
                comboBox8.Items.Add(row.Cells[7].Value.ToString());
                comboBox9.Items.Add(row.Cells[8].Value.ToString());
                comboBox10.Items.Add(row.Cells[9].Value.ToString());
                comboBox11.Items.Add(row.Cells[10].Value.ToString());
            }

        }
        catch (Exception ex)
        { MessageBox.Show(ex.Message); }
    }

private void button1_Click(object sender, EventArgs e)
    {
        try
        {
            OpenFileDialog openfile = new OpenFileDialog();
            openfile.Filter = "Excel Files | *.xlsx; *.xls; * .xlsm";

            if (openfile.ShowDialog() == System.Windows.Forms.DialogResult.OK)
            {
                this.tb_path.Text = openfile.FileName;
            }

            string constr = "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();

            dropdown_sheet.DataSource = con.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);
            dropdown_sheet.DisplayMember = "TABLE_NAME";
            dropdown_sheet.ValueMember = "TABLE_NAME";

        }
        catch (Exception ex)
        {
            MessageBox.Show(ex.Message);
        }
    }

Answer 1

通过阅读以下文章，您将找到一种非常好的方法来在datagridview上实现筛选UI。

这是一个开始学习某些东西的好地方，它可以适应其他类型的筛选UI（例如，用于搜索条件的文本框而不是组合框）。

MSDN - Building a Drop-Down Filter List for a DataGridView Column Header Cell

通过多个组合框过滤DataGridView

1 个答案: