c# - ComboBox.SelectedValue 不工作

Question

这段代码有什么问题？

myComboBox.Items.Clear();
myComboBox.Items.AddRange(new string[]{"one","two"});
myComboBox.SelectedValue = "one";

它显示时没有任何选择。

Answer 1

如果您像这样填充组合框:

myComboBox.Items.AddRange(new string[]{"one","two"});

您必须使用 ComboBox.SelectedItem或 ComboBox.SelectedIndex设置/获取所选项目的属性:

myComboBox.SelectedItem = "one"; //or
myComboBox.SelectedIndex = 0; 

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The ComboBox.SelectedValue property is inherited fromListControl and must be used ONLY when:

• the control is bound to a DataSource
• and ValueMember and DisplayMember properties are definied.