Question

我想使用删除按钮从datagridview中删除所选行，但是我选择的行将不会被删除，第一行数据网格被删除。谢谢您的指教

这些是按钮代码：

private void button1_Click(object sender, EventArgs e)
{
    if (dgcontact.CurrentRow != null)
    {
        if (MessageBox.Show("...", "...", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
        {
            int personID = Convert.ToInt32(dgcontact.CurrentRow.Cells[0].Value.ToString());
            repository.delete(personID);
        }
    }
}

这是一种删除方法：

public bool delete(int personID)
{
    string connectionstring = "data source=.;initial catalog=person;integrated security=true";
    string query = "delete from tperson where personID=@personID";
    SqlConnection conn = new SqlConnection(connectionstring);
    SqlCommand cmd = new SqlCommand(query, conn);
    cmd.Parameters.AddWithValue("@personID", personID);
    conn.Open();
    cmd.ExecuteNonQuery();
    conn.Close();
    return true;
}

Answer 1

不要使用CurrentRow，只需遍历SelectedCells

using System.Linq;

if (MessageBox.Show("...", "...", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
{
int selectedPersonId = dgcontact.SelectedCells.Cast<DataGridViewCell>()
                .Where(cell => cell.OwningColumn.Index.Equals(1))
                .Select(cell => Convert.ToInt32(cell.Value)).First();
repository.delete(selectedPersonId);
}

不删除所选的datagirdview行

1 个答案: