如何在C＃Windows窗体中使用文本框过滤DataGridView

Question

I found a problem on how to filter the list that I have in the data grid view of my the Windows Form.

Basically, I have a textbox and I want that when I enter value in it, it will filter the Data Grid View.

I do not have any errors, but when I try to write text in the text box, the grid view remains the same and does not filter anything.

The following is my FormLoad (Where it fills the gridview)

private void Transactions_Load(object sender, EventArgs e)
    {
        List<LogsViewModel> logs = sr.GetTransactions().ToList();
        dgvTransactions.DataSource = sr.GetTransactions().ToList();
    }

The following is when I input text in the textbox:

private void txtAccountID_TextChanged(object sender, EventArgs e)
    {
        BindingSource bs = new BindingSource();
        bs.DataSource = dgvTransactions.DataSource;
        bs.Filter = dgvTransactions.Columns[1].HeaderText.ToString() + " LIKE '%" + txtAccountID.Text + "%'";
        dgvTransactions.DataSource = bs.DataSource;
    }

Please help! Thanks

Answer 1

You need to call the DataBind() method in your txtAccountID_TextChanged() event.

private void txtAccountID_TextChanged(object sender, EventArgs e)
    {
        BindingSource bs = new BindingSource();
        bs.DataSource = dgvTransactions.DataSource;
        bs.Filter = dgvTransactions.Columns[1].HeaderText.ToString() + " LIKE '%" + txtAccountID.Text + "%'";
        dgvTransactions.DataSource = bs.DataSource;
        dgvTransactions.DataBind();
    }

I'm not in a position to test this, but it still might not update until you press the Enter key or cause the TextBox to lose focus.

Answer 2

 private void txtAccountID_TextChanged(object sender, EventArgs e) { (dgvTransactions.DataSource as DataTable).DefaultView.RowFilter = string.Format("Field = '{0}'", textBoxFilter.Text); }