public partial class Form2 : Form
{
 public Form2(int _Minimum,int _Maximum)//帶參數(shù)，表示進(jìn)度條的范圍的最小值和最大值
 {
   InitializeComponent();
   progressBar1.Maximum=_Maximum;//設(shè)置范圍最大值
   progressBar1.Value = progressBar1.Minimum = _Minimum;//設(shè)置范圍最小值
 }
 public void setPos(int value)//設(shè)置進(jìn)度條當(dāng)前進(jìn)度值
 {
   if (value < progressBar1.Maximum)//如果值有效
   {
     progressBar1.Value = value;//設(shè)置進(jìn)度值
     label1.Text = (value * 100 / progressBar1.Maximum).ToString() + "%";//顯示百分比
   }
   Application.DoEvents();//重點(diǎn)，必須加上，否則父子窗體都假死
 }
 private void Form2_Load(object sender, EventArgs e)
 {
   this.Owner.Enabled = false;//設(shè)置父窗體不可用
 }
 private void Form2_FormClosed(object sender, FormClosedEventArgs e)
 {
   this.Owner.Enabled = true;//回復(fù)父窗體為可用
 }
}

private void button1_Click(object sender, EventArgs e)
{
   Form2 fm = new Form2(0,100);
   fm.Show(this);//設(shè)置父窗體
   for (int i = 0; i < 100; i++)
   {
     fm.setPos(i);//設(shè)置進(jìn)度條位置
     Thread.Sleep(100);//睡眠時(shí)間為100
   }
   fm.Close();//關(guān)閉窗體
}

public Form OwnerForm;
public Form2(int _Minimum,int _Maximum,Form _OwnerForm)//帶參數(shù)，表示進(jìn)度條的范圍的最小值和最大值
{
   InitializeComponent();
   progressBar1.Maximum=_Maximum;//設(shè)置范圍最大值
   progressBar1.Value = progressBar1.Minimum = _Minimum;//設(shè)置范圍最小值
   this.OwnerForm=_OwnerForm;
}
private void Form2_Load(object sender, EventArgs e)
{
   this.OwnerForm.Enabled = false;//設(shè)置父窗體不可用
}
private void Form2_FormClosed(object sender, FormClosedEventArgs e)
{
   this.OwnerForm.Enabled = true;//回復(fù)父窗體為可用
}

private void button1_Click(object sender, EventArgs e)
{
   Form2 fm = new Form2(0,100,this);
   fm.Show();//設(shè)置父窗體
   for (int i = 0; i < 100; i++)
   {
     fm.setPos(i);//設(shè)置進(jìn)度條位置
     Thread.Sleep(100);//睡眠時(shí)間為100
   }
   fm.Close();//關(guān)閉窗體
}