winform 中listbox绑定了DataSource数据如何调整选中项的位置？

[H_Gragon]

我想讲成绩调到第一的位置
winform 中listbox绑定了DataTable数据如何调整选中项的位置？
要是不绑定DataSource数据源可以调整，绑定DataSource数据源后无法调整选择项位置！

[Dotar]

上下两按钮触发的 protected void Button_up_Click(object sender, EventArgs e) { if (this.ListBox_1.SelectedIndex > 0) { string newValue = this.ListBox_1.SelectedItem.Value; string newText = this.ListBox_1.SelectedItem.Text; int newIndex = this.ListBox_1.SelectedIndex; this.ListBox_1.SelectedItem.Value = this.ListBox_1.Items[newIndex - 1].Value; this.ListBox_1.SelectedItem.Text = this.ListBox_1.Items[newIndex - 1].Text; this.ListBox_1.Items[newIndex - 1].Text = newText; this.ListBox_1.Items[newIndex - 1].Value = newValue; this.ListBox_1.SelectedIndex--; } } protected void Button_down_Click(object sender, EventArgs e) { if (this.ListBox_1.SelectedIndex < this.ListBox_1.Items.Count - 1) { string newValue = this.ListBox_1.SelectedItem.Value; string newText = this.ListBox_1.SelectedItem.Text; int newIndex = this.ListBox_1.SelectedIndex; this.ListBox_1.SelectedItem.Value = this.ListBox_1.Items[newIndex + 1].Value; this.ListBox_1.SelectedItem.Text = this.ListBox_1.Items[newIndex + 1].Text; this.ListBox_1.Items[newIndex +1].Text = newText; this.ListBox_1.Items[newIndex + 1].Value = newValue; this.ListBox_1.SelectedIndex++; } }

[H_Gragon]

引用 1 楼 z_dota 的回复:

上下两按钮触发的 protected void Button_up_Click(object sender, EventArgs e) { if (this.ListBox_1.SelectedIndex > 0) { string newValue = this.ListBox_1.SelectedItem.Value; string newText = this.ListBox_1.SelectedItem.Text; int newIndex = this.ListBox_1.SelectedIndex; this.ListBox_1.SelectedItem.Value = this.ListBox_1.Items[newIndex - 1].Value; this.ListBox_1.SelectedItem.Text = this.ListBox_1.Items[newIndex - 1].Text; this.ListBox_1.Items[newIndex - 1].Text = newText; this.ListBox_1.Items[newIndex - 1].Value = newValue; this.ListBox_1.SelectedIndex--; } } protected void Button_down_Click(object sender, EventArgs e) { if (this.ListBox_1.SelectedIndex < this.ListBox_1.Items.Count - 1) { string newValue = this.ListBox_1.SelectedItem.Value; string newText = this.ListBox_1.SelectedItem.Text; int newIndex = this.ListBox_1.SelectedIndex; this.ListBox_1.SelectedItem.Value = this.ListBox_1.Items[newIndex + 1].Value; this.ListBox_1.SelectedItem.Text = this.ListBox_1.Items[newIndex + 1].Text; this.ListBox_1.Items[newIndex +1].Text = newText; this.ListBox_1.Items[newIndex + 1].Value = newValue; this.ListBox_1.SelectedIndex++; } }

这个要添加的是Item可以！但绑定Datasource后就不可以了！