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
1 private void Form1_Load(object sender, EventArgs e) 2 { 3 dataset ds=getds("select code,name from shp") ; 4 5 comboBox1.DataSource = ds; 6 comboBox1.ValueMember = "code"; 7 comboBox1.DisplayMember = "name"; 8 comboBox1.SelectedIndex = 0; 9 10 11 comboBox2.DataSource = ds; 12 comboBox2.ValueMember = "code"; 13 comboBox2.DisplayMember = "name"; 14 comboBox2.SelectedIndex = 0; 15 }
解决方法：
1 dataset ds=getds("select code,name from shp") 2 3 comboBox1.DataSource = ds; 4 comboBox1.ValueMember = "code"; 5 comboBox1.DisplayMember = "name"; 6 comboBox1.SelectedIndex = 0; 7 8 comboBox2.DataSource = ds.Copy(); 9 comboBox2.ValueMember = "code"; 10 comboBox2.DisplayMember = "name"; 11 comboBox2.SelectedIndex = 0;