C# winform 使用进度条(两种形式)
第三步：进度条值更新函数（参数必须跟声明的代理参数一样）
private void SetTextMessage(int ipos)
{
if (this.InvokeRequired)
{
SetPos setpos =new SetPos(SetTextMessage);
this.Invoke(setpos, newobject[] { ipos});
}
else
{
this.label1.Text = ipos.ToString() + "/100";
this.progressBar1.Value = Convert.ToInt32(ipos);
}
}
第四步：函数实现
privatevoid button1_Click(object sender, EventArgs e)
{
Thread fThread =new Thread(new ThreadStart(SleepT));//开辟一个新的线程
fThread.Start();
}
第五步：新的线程执行函数：
privatevoid SleepT()
{
for (int i = 0; i < 500; i++)
{
System.Threading.Thread.Sleep(100);//没什么意思，单纯的执行延时
SetTextMessage(100 * i / 500);
}
}
=============================
使用浮动进度条
1.浮动窗口
/// <summary>
/// Increase process bar
/// </summary>
/// <param name="nValue">the value increased</param>
/// <returns></returns>
public bool Increase(int nValue)
{
if (nValue > 0)
{
if (prcBar.Value + nValue < prcBar.Maximum)
{
prcBar.Value += nValue;
return true;
}
else
{
prcBar.Value = prcBar.Maximum;
this.Close();
return false;
}
}
return false;
}
2.使用进度的窗口
using System.Threading;
private frmProcessBar myProcessBar = null;
private delegate bool IncreaseHandle(int nValue);
private IncreaseHandle myIncrease = null;
private void ShowProcessBar()
{
myProcessBar = new frmProcessBar();
// Init increase event
myIncrease = new IncreaseHandle(myProcessBar.Increase);
myProcessBar.StartPosition = FormStartPosition.CenterScreen;
myProcessBar.ShowDialog();
myProcessBar = null;
}
private void ThreadFun()
{
MethodInvoker mi = new MethodInvoker(ShowProcessBar);
this.BeginInvoke(mi);
Thread.Sleep(1000);//Sleep a while to show window
bool blnIncreased = false;
object objReturn = null;
do
{
Thread.Sleep(50);
objReturn = this.Invoke(this.myIncrease, new object[] { 2 });
blnIncreased = (bool)objReturn;
}
while (blnIncreased);
}
使用方法:
Thread thdSub = new Thread(new ThreadStart(ThreadFun));
thdSub.Start();
