当网格绑定到排序的DataView时，如何将DataGridView的选定行设置为新添加的行？

发布于 2024-07-07 19:27:08 字数 505 浏览 7 评论 0原文

我有一个绑定到 DataView 的 DataGridView。用户可以在任何列上对网格进行排序。

我通过在 DataView 的底层 DataTable 上调用 NewRow 向网格添加一行，然后将其添加到 DataTable 的 Rows 集合中。如何选择网格中新添加的行？

我尝试通过创建绑定到 DataView 的 BindingContext 的 BindingManagerBase 对象，然后设置 BindingManagerBase.Position = BindingManagerBase.Count。如果网格未排序，则此方法有效，因为新行会添加到网格的底部。但是，如果排序顺序使得该行不添加到底部，则此方法不起作用。

如何可靠地将网格的选定行设置为新行？

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唯憾梦倾城 2024-07-14 19:27:08

一旦更新绑定的 DataTable，DataGridView 控件就会触发“RowsAdded”事件，其中 DataGridViewRowsAddedEventArgs.RowIndex 属性包含所添加行的索引。

//local member
private int addedRowIndex;

private void AddMyRow()
{
    //add the DataRow           
    MyDataSet.MyDataTable.Rows.Add(...);

    //RowsAdded event is fired here....

    //select the row
    MyDataGrid.Rows[addedRowIndex].Selected = true;
}

private void MyDataGrid_RowsAdded(object sender, DataGridViewRowsAddedEventArgs e)
{
    addedRowIndex = e.RowIndex;
}

也许不是最优雅的解决方案，但它对我有用

As soon as you update the bound DataTable, a "RowsAdded" event is fired by the DataGridView control, with the DataGridViewRowsAddedEventArgs.RowIndex property containing the index of the added row.

//local member
private int addedRowIndex;

private void AddMyRow()
{
    //add the DataRow           
    MyDataSet.MyDataTable.Rows.Add(...);

    //RowsAdded event is fired here....

    //select the row
    MyDataGrid.Rows[addedRowIndex].Selected = true;
}

private void MyDataGrid_RowsAdded(object sender, DataGridViewRowsAddedEventArgs e)
{
    addedRowIndex = e.RowIndex;
}

Not the most elegant solution, perhaps, but it works for me

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以可爱出名 2024-07-14 19:27:08

不知道它是最好的解决方案，但例如看起来比迭代更好。

            DataRowView drv = (DataRowView)source.AddNew();
            grupoTableAdapter.Update(drv.Row);
            grupoBindingSource.Position = grupoBindingSource.Find("ID", drv.Row.ItemArray[0]);

Dont know id its the best solution but for instance looks better than iterate.

            DataRowView drv = (DataRowView)source.AddNew();
            grupoTableAdapter.Update(drv.Row);
            grupoBindingSource.Position = grupoBindingSource.Find("ID", drv.Row.ItemArray[0]);

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眼角的笑意。 2024-07-14 19:27:08

假设您的数据源中有某种唯一标识符，您可以迭代行集合并进行比较，如下所示：

Dim myRecentItemID As Integer = 3

For Each row As GridViewRow In gvIndividuals.Rows
    Dim drv As DataRowView = DirectCast(row.DataItem, DataRowView)
    If CInt(drv("ItemID")) = myRecentItemID Then
        gvIndividuals.EditIndex = row.RowIndex
    End If
Next

希望这有帮助！

Assuming you have some sort of unique identifier in your data source you could iterate over your collection of rows and compare, as such:

Dim myRecentItemID As Integer = 3

For Each row As GridViewRow In gvIndividuals.Rows
    Dim drv As DataRowView = DirectCast(row.DataItem, DataRowView)
    If CInt(drv("ItemID")) = myRecentItemID Then
        gvIndividuals.EditIndex = row.RowIndex
    End If
Next

Hope this helps!

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