我的插入行在哪里？ （DataGridView中）

I am using a Datagridview (unbounded mode) and I have selected "enable adding" in the designer.

我正在使用Datagridview(*模式),我在设计器中选择了“启用添加”。

when the form loads, the grid is not populated (drop down to select a supplier and button to view aliases) and there is a single row displayed with the * in the tab.

加载表单时,不会填充网格(下拉选择供应商和按钮以查看别名),并在选项卡中显示一行*。

However, when I populate the grid, I no longer have this insert row for adding to the collection.

但是,当我填充网格时,我不再有这个插入行来添加到集合中。

Here's basically what I am doing:

这基本上就是我在做什么:

List<SupplierAlias> aliases = //some db lookup.
aliasGrid.AutoGenerateColumns = false;
aliasGrid.DataSource = aliases;

The columns are defined as unbound columns in the designer.

列在设计器中定义为未绑定列。

Previously, I was using clearing the aliasGrid.DataBindings but I took that out and it still removes the insert row.

以前,我使用清除aliasGrid.DataBindings,但我把它拿出来,它仍然删除插入行。

2 个解决方案

#1

Does SupplierAlias have a public parameterless constructor? If it doesn't, you'll need to use an IBindingList implementation to provide the new row - for example BindingSource:

SupplierAlias是否有公共无参数构造函数?如果没有,您将需要使用IBindingList实现来提供新行 - 例如BindingSource:

    BindingSource bs = new BindingSource();
    bs.DataSource = yourList;
    bs.AddingNew += delegate(object sender, AddingNewEventArgs args)
    {
        args.NewObject = new SomeType(args);
    };
    grid.DataSource = bs;

#2

Answering own question for others' reference.

回答自己的问题供他人参考。

I changed the List<SupplierAlias> I used to databind to a BindingList<SupplierAlias> and I have my insert row now.

我将List 改为将数据绑定更改为BindingList ,我现在有了插入行。