我在C#的panel1中加了scorllbar跟panel2,给panel2加了Paint事件,但是每次都要我移动Scrollbar之后panel2中的画的东西才会显示,这是为什么。求解(是不是因为我Paint加的地方不对,但是我要求每次返回list之后才能再画图啊)
```private void 最高优先数ToolStripMenuItem_Click(object sender, EventArgs e)
{
Form2 fm2 = new Form2();
if (fm2.ShowDialog() == DialogResult.OK)
{
list = fm2.list2;
Console.WriteLine();
list.Sort((j1, j2) => j1.weight - j2.weight);
for (int i = 0; i < list.Count; i++)
{
Console.WriteLine(list[i].name + list[i].weight + list[i].timeneed + list[i].timeused + list[i].state);
}
this.panel2.Paint += new System.Windows.Forms.PaintEventHandler(this.panel2_paint);
}
}