c# - Updating DataGridViews source programmatically?

Question

After I change the DataGridView cell's value programmatically, the source cannot be updated. What can I do?

datagridview1.DataSource = bindingsource1;
datagridview1.Rows[0].Cells[0].Value = "1";

Answer 1

您需要在 datagridview 上调用刷新

datagridview1.Refresh();

如果您处于编辑模式，那么您应该使用 EndEdit

datagridview1.EndEdit();
datagridview1.Refresh();

Answer 2

DataSet你需要在我的代码下面写回

private void button2_Click(object sender, EventArgs e)
{
    this.Validate();

    try
    {
        dgvArticles.CurrentRow.Cells[1].Value = txtSubject.Text;
        dgvArticles.CurrentRow.Cells[2].Value = rtbBodyContent.Text;
        dgvArticles.CurrentRow.Cells[3].Value = pbPrimaryPicture.Image;
        dgvArticles.CurrentRow.Cells[4].Value = pbSecondaryPicture.Image;
        dgvArticles.CurrentRow.Cells[5].Value = pbThirdPicture.Image;
    }
    catch
    {
        MessageBox.Show(e.ToString());
    }

    AccessingNetFamerDatabase anfdArticles = new AccessingNetFamerDatabase();
    if (_dsArticles!= null)
    {
        SqlCommandBuilder _sqlCBArticles = new SqlCommandBuilder(AccessingNetFamerDatabase._sqlDataAdapter);
        AccessingNetFamerDatabase._sqlDataAdapter.Update(_dsArticles.Tables[0]);
    }
}

Answer 3

我认为您需要手动执行此操作。将数据绑定到gridview。更新网格视图。选择已更新的单元格，将数据保存回数据并从数据源中提取数据并刷新网格视图。

Answer 4

我有同样的问题，能够通过在绑定源上调用 EndEdit() 来解决它。

例如

bs.EndEdit();

int x1 = data.Update(dt);

然后更新返回更新的行数。在添加 EndEdit 之前，它始终为零