private void SetState(LoadingArgs e)
{
switch (e.State)
{
case LoadingState.Initializtion:
case LoadingState.Handling:
progressState.Maximum = e.MaxValue;
progressState.Minimum = e.MinValue;
progressState.Value = e.Value;
break;
case LoadingState.Completion:
Owner.Opacity = 1;
Owner.Enabled = true;
Close();
break;
case LoadingState.Error:
if (e.Error != null)
{
MessageBox.Show(this, e.Error, "处理错误",
MessageBoxButtons.OK, MessageBoxIcon.Error);
}
Owner.Opacity = 1;
Owner.Enabled = true;
Close();
break;
}
}
protected override void OnLoad(EventArgs e)
{
base.OnLoad(e);
Owner.Enabled = false;
Owner.Opacity = 0.6;
if (Style != LoadingStyle.None)
{
picState.Visible = false;
progressState.Visible = true;
progressState.Dock = DockStyle.Fill;
}
else
{
picState.Visible = true;
progressState.Visible = false;
picState.Dock = DockStyle.Fill;
}
Action <Form> onExecute = e_ => {
LoadingArgs args = new LoadingArgs();
args.Owner = Owner;
args.OnChange = state => {
Invoke(new Action <LoadingArgs>(SetState), args);
};
try {
OnExecute(args);
args.State = LoadingState.Completion;
args.Change();
} catch (Exception err) {
args.State = LoadingState.Error;
args.Error = err.Message;
args.Change();
}
};
ExecuteInvoke(onExecute);
}
protected virtual void OnExecute(LoadingArgs args)
{
Execute(args);
}
