DataGridView根据第一行筛选数据选择要在文本框中显示的行

Question

在过滤datagridview中的数据后，如何在文本框中显示第一个选定的行值？

private void btnsearch_Click(object sender, EventArgs e)
{
    dgpay.DataSource = p.SearchInPaymentVouchers("PaymentVouchers.VendorID", comven.SelectedValue.ToString());
}

Answer 1

private void btnsearch_Click(object sender, EventArgs e)
{
    DataTable dt = p.SearchInPaymentVouchers("PaymentVouchers.VendorID", comven.SelectedValue.ToString());
    dgpay.DataSource = dt;

    //Code to bind first row in textbox.
    //check if the datatable has rows
    if(dt.Rows.Count > 0)
    {
        textbox.text = Convert.ToInt32(dt.Rows[0]["id"]);
        //Row[line index you want to get]["Header of datatable column ex VendorID"]
    }
}

希望这是你真正想要的。如果您遇到任何问题，请随时询问。