public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
int current = 0;
private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
{
progressBar1.Maximum = (int)numericUpDown1.Value;
for (int i = 0; i < progressBar1.Maximum; i++)
{
System.Threading.Thread.Sleep(10);
backgroundWorker1.ReportProgress(++current);
}
//MessageBox.Show(current.ToString());
}
private void Form1_Load(object sender, EventArgs e)
{
}
private void button1_Click(object sender, EventArgs e)
{
try { int.Parse(numericUpDown1.Text); }
catch
{
MessageBox.Show("工作量必须为数字！");
return;
}
if (backgroundWorker1.IsBusy)
{
MessageBox.Show("已经在处理中，请稍后！");
return;
}
backgroundWorker1.RunWorkerAsync();
}
private void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e)
{
progressBar1.Value = e.ProgressPercentage;
}
private void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
{
progressBar1.Value = 0;
MessageBox.Show("OK<");
}
}