今天WINFROM编程遇到这么一个问题：是有关WINFORM中两个comboBox控件绑定同一个数据源的问题，在窗体的界面上有两个comboBox，我在Form1_Load中对他们做了数据绑定（具体代码如下），但是运行出现了这个一个奇怪的问题，我改变了comboBox1的值，但是comboBox2的值也自动改变了，我没有设置comboBox1_SelectedIndexChanged函数

private void Form1_Load(object sender, EventArgs e)
{
dataset ds=getds("select code,name from shp") ;

comboBox1.DataSource = ds;
comboBox1.ValueMember = "code";
comboBox1.DisplayMember = "name";
comboBox1.SelectedIndex = 0;

comboBox2.DataSource = ds;
comboBox2.ValueMember = "code";
comboBox2.DisplayMember = "name";
comboBox2.SelectedIndex = 0;
}

解决方法：

dataset ds=getds("select code,name from shp")

comboBox1.DataSource = ds;
comboBox1.ValueMember = "code";
comboBox1.DisplayMember = "name";
comboBox1.SelectedIndex = 0;

comboBox2.DataSource = ds.Copy();
comboBox2.ValueMember = "code";
comboBox2.DisplayMember = "name";
comboBox2.SelectedIndex = 0;