c# - 在C#中初始化comboBox中的一个值

Question

我意识到程序启动时我的组合框总是空的。我必须单击旁边的箭头来选择一个值。我们如何做才能让组合框在程序启动时显示一个值？

Answer 1

您可以设置以下 4 个属性:

// Gets or sets the index specifying the currently selected item.
comboBox1.SelectedIndex = someIndex;  //int

// Gets or sets currently selected item in the ComboBox.
comboBox1.SelectedItem = someItem; // object

// Gets or sets the text that is selected in the editable portion of a ComboBox.
comboBox1.SelectedText = someItemText; // string

// Gets or sets the value of the member property specified by the ValueMember property. 
comboBox1.SelectedValue = someValue; // object

直接来自 MSDN 的评论行:http://msdn.microsoft.com/en-us/library/system.windows.forms.combobox.aspx