/// <summary>
/// Invokes this instance.
/// </summary>
public void Invoke()
{
object source = this.Context.Value;
if (source != null)
{
object[] paras = this.Parameters != null?this.Parameters.Select(item => item.Value).ToArray() : null;
var methodInfo = DynamicEngine.GetMethodInfo(source.GetType(), this.Method, paras, false);
if (methodInfo != null)
{
DynamicEngine.InvokeMethod(source, methodInfo, paras);
}
}
}
/// <summary>
/// Handles the <see cref="E:AttachEventOccurred" /> event.
/// </summary>
/// <param name="sender">The sender.</param>
/// <param name="args">The <see cref="EventArgs"/> instance containing the event data.</param>
internal void OnAttachEventOccurred(object sender, EventArgs args)
{
if (!this.IsAlive || !this.eventTarget.IsNotNullAndAlive())
{
this.DetachEvent();
return;
}
if (this.eventFilter != null && !this.eventFilter(sender, args))
{
return;
}
DynamicEngine.InvokeMethod(this.Target, this.HandlerName, new[] { sender, args });
}
/// <summary>
/// Determines whether this instance can invoke.
/// </summary>
/// <returns><c>true</c> if this instance can invoke; otherwise, <c>false</c>.</returns>
/// <exception cref="MissingMemberException">The attach method does not return boolean value.</exception>
public bool CanInvoke()
{
object source = this.Context.Value;
if (source != null)
{
object[] paras = this.Parameters != null?this.Parameters.Select(item => item.Value).ToArray() : null;
var methodInfo = DynamicEngine.GetMethodInfo(source.GetType(), this.Method, paras, false);
if (methodInfo != null)
{
object value = DynamicEngine.InvokeMethod(source, methodInfo, paras);
if (!(value is bool))
{
throw new MissingMemberException(
string.Format("The attach method {0} does not return Boolean value", this.Method));
}
return((bool)value);
}
}
return(false);
}