为什么在一个 Combo 中更改 SelectedItem 会更改所有其他 Combo? [英] Why changing SelectedItem in one Combo changes all other Combos?

问题描述

我以这种方式填充了组合框

I populated comboboxes in this way

foreach (Control c in this.Controls)
{
     if (c is ComboBox)
     {
         (c as ComboBox).DataSource = DataSet1.Tables[0];
         (c as ComboBox).DisplayMember = "Articles";
     }
}

但是，问题是当我在一个 Combo 中更改 SelectedItem 时 - 它会在所有其他 Combo 中更改吗?

But, problem is when I change SelectedItem in one Combo - it becomes changed in all other Combos?

推荐答案

将它们各自绑定到 DataSet1.Table[0] 的单独实例.

Bind them each to a separate instance of the DataSet1.Table[0].

即)

foreach (Control c in this.Controls)
{
    if (c is ComboBox)
    {
        DataTable dtTemp = DataSet1.Tables[0].Copy();
        (c as ComboBox).DataSource = dtTemp 
        (c as ComboBox).DisplayMember = "Articles";
    }
}

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