我已将datagridview
与datatable
( Growns )绑定在一起。我的主要目标是,用户可以使用datagridview
( dataGridView1 ),填充和更新数据,点击button
SAVE 时,所有数据将被保存到datatable中,因为我需要它来进行进一步的工作。
一切正常,将数据保存到数据表。我究竟做错了什么?
这是我的代码:
private void Form2_Load(object sender, EventArgs e) {
// TODO: This line of code loads data into the 'tekmovalecDataSet.Odrasli' table. You can move, or remove it, as needed.
this.grownsTableAdapter.Fill(this.competitorDataSet.Odrasli);
}
private void buttonSave_Click(object sender, EventArgs e) {
if (EmptySpace())
{
CompetitorDataSet.OdrasliRow newGrownsRow = competitorDataSet.Growns.NewGrownsRow();
newGrownsRow.StN = textStN.Text;
newGrownsRow.Name = textN.Text;
newGrownsRow.Surname = textSN.Text;
newGrownsRow.Club = textC.Text;
newGrownsRow.YBirth = textYB.Text;
competitorDataSet.Growns.Rows.Add(OdrasliNova);
competitorDataSet.Growns.AcceptChanges();
this.dataGridView1.DataSource = competitorDataSet.Growns;
this.Validate();
this.grownsBindingSource.EndEdit();
if (dataGridView1.BindingContext[competitorDataSet.Growns] != null)
{
dataGridView1.BindingContext[competitorDataSet.Growns].EndCurrentEdit();
}
this.grownsTableAdapter.Update(competitorDataSet.Odrasli);
this.grownsTableAdapter.Adapter.AcceptChangesDuringUpdate = true;
}
else
{
MessageBox.Show("Fill ALL data about competitor!");
}
}
P.S。:当我手动填写datatable
时,表格已打开datagridview
已填写,因此我认为datatable
和datagridview
已关联...
P.S.2。:bool EmptySpace
工作正常。
答案 0 :(得分:2)
当您设置this.Update(competitorDataSet.Odrasli);
时,TableAdapter
会将更改从DataTable
(新闻,已删除,已更新的行)更新为数据库。
由于您在 competitorDataSet.Growns.AcceptChanges();
之前致电TableAdapter.Update
,表格中的所有更改都已被接受,而且TableAdapter无需更新。
所以只需删除
competitorDataSet.Growns.AcceptChanges();
此外,如果您在 this.grownsTableAdapter.Adapter.AcceptChangesDuringUpdate = true
之前设置grownsTableAdapter.Update(competitorDataSet.Odrasli);
,则会接受更改,因此您无需亲自接受更改(在我看来,默认值为True,因此我不确定此行是否必需)
答案 1 :(得分:0)
您没有使用datagridview编辑数据,您正在使用文本框更改数据集,我认为这是您手动填充的示例...
我将假设您要用于更新数据库的代码从此行开始:
this.dataGridView1.DataSource = competitorDataSet.Growns;
我怀疑您的问题出现在以下代码块中(代码注释中的解释):
//why rebind the datagridview?
//this line should be removed
this.dataGridView1.DataSource = competitorDataSet.Growns;
//why call this here? validation should be done prior
//to adding the new row to the datatable
//this line should be removed
this.Validate();
this.grownsBindingSource.EndEdit();
if (dataGridView1.BindingContext[competitorDataSet.Growns] != null)
{
dataGridView1.BindingContext[competitorDataSet.Growns].EndCurrentEdit();
}
//reverse the order of these 2 lines
this.grownsTableAdapter.Update(competitorDataSet.Odrasli);
this.grownsTableAdapter.Adapter.AcceptChangesDuringUpdate = true;
/* like this:
this.grownsTableAdapter.Adapter.AcceptChangesDuringUpdate = true;
this.grownsTableAdapter.Update(competitorDataSet.Odrasli);
*/
如果这不能解决您的问题,请发布数据视图的绑定代码。