我做了一个代码如下。我希望有尽可能多的图表被选中的列表框。现在他们总是绘制所有他们。例如，我想选择listBox1是一个图形，例如listBox1，listBox2，listBox3是3个图形。
怎么改，加什么？

private void Form1_Load(object sender, EventArgs e)
{
   listBox1.Items.Add("value1");
   listBox1.Items.Add("value2");
   listBox1.Items.Add("value3");
   listBox1.SelectionMode = SelectionMode.MultiSimple;
}

private void button1_Click_1(object sender, EventArgs e)
{
   connect.Open();
   string mysql = "SELECT value1, value2, value3, valuedate FROM mydata";
   MySqlDataAdapter da = new MySqlDataAdapter(mysql, connect);
  
   DataSet ds = new DataSet();
   chart1.DataSource = ds.Tables[0];
  
   chart1.Series["value1"].XValueMember = "valuedate";
   chart1.Series["value1"].YValueMembers = "value1";
  
   chart1.Series["value2"].XValueMember = "valuedate";
   chart1.Series["value2"].YValueMembers = "value2";
  
   chart1.Series["value3"].XValueMember = "valuedate";
   chart1.Series["value3"].YValueMembers = "value3";
}