internal void ExtenderSetValue(IExtenderProvider provider, object component, object value, PropertyDescriptor notifyDesc)
{
if (provider != null)
{
ISite site = GetSite(component);
IComponentChangeService changeService = null;
object oldValue = null;
// Announce that we are about to change this component
//
if (site != null)
{
changeService = (IComponentChangeService)site.GetService(typeof(IComponentChangeService));
Debug.Assert(!CompModSwitches.CommonDesignerServices.Enabled || changeService != null, "IComponentChangeService not found");
}
// Make sure that it is ok to send the onchange events
//
if (changeService != null)
{
oldValue = ExtenderGetValue(provider, component);
try {
changeService.OnComponentChanging(component, notifyDesc);
}
catch (CheckoutException coEx) {
if (coEx == CheckoutException.Canceled)
{
return;
}
throw coEx;
}
}
provider = (IExtenderProvider)GetInvokee(componentClass, provider);
if (SetMethodValue != null)
{
SetMethodValue.Invoke(provider, new object[] { component, value });
// Now notify the change service that the change was successful.
//
if (changeService != null)
{
changeService.OnComponentChanged(component, notifyDesc, oldValue, value);
}
}
}
}
/// <summary>
/// This will set value to be the new value of this property on the
/// component by invoking the setXXX method on the component. If the
/// value specified is invalid, the component should throw an exception
/// which will be passed up. The component designer should design the
/// property so that getXXX following a setXXX should return the value
/// passed in if no exception was thrown in the setXXX call.
/// </summary>
public override void SetValue(object component, object value)
{
Debug.WriteLine($"[{Name}]: SetValue({component?.GetType().Name ?? "(null)"}, {value?.GetType().Name ?? "(null)"})");
if (component != null)
{
ISite site = GetSite(component);
object oldValue = null;
object invokee = GetInvocationTarget(_componentClass, component);
if (!IsReadOnly)
{
IComponentChangeService changeService = null;
// Announce that we are about to change this component
if (site != null)
{
changeService = (IComponentChangeService)site.GetService(typeof(IComponentChangeService));
}
// Make sure that it is ok to send the onchange events
if (changeService != null)
{
oldValue = GetMethodValue.Invoke(invokee, null);
try
{
changeService.OnComponentChanging(component, this);
}
catch (CheckoutException coEx)
{
if (coEx == CheckoutException.Canceled)
{
return;
}
throw;
}
}
try
{
try
{
SetMethodValue.Invoke(invokee, new object[] { value });
OnValueChanged(invokee, EventArgs.Empty);
}
catch (Exception t)
{
// Give ourselves a chance to unwind properly before rethrowing the exception.
//
value = oldValue;
// If there was a problem setting the controls property then we get:
// ArgumentException (from properties set method)
// ==> Becomes inner exception of TargetInvocationException
// ==> caught here
if (t is TargetInvocationException && t.InnerException != null)
{
// Propagate the original exception up
throw t.InnerException;
}
else
{
throw;
}
}
}
finally
{
// Now notify the change service that the change was successful.
changeService?.OnComponentChanged(component, this, oldValue, value);
}
}
}
}
/// <include file='doc\ReflectPropertyDescriptor.uex' path='docs/doc[@for="ReflectPropertyDescriptor.SetValue"]/*' />
/// <devdoc>
/// This will set value to be the new value of this property on the
/// component by invoking the setXXX method on the component. If the
/// value specified is invalid, the component should throw an exception
/// which will be passed up. The component designer should design the
/// property so that getXXX following a setXXX should return the value
/// passed in if no exception was thrown in the setXXX call.
/// </devdoc>
public override void SetValue(object component, object value)
{
#if DEBUG
if (PropDescUsageSwitch.TraceVerbose)
{
string compName = "(null)";
string valName = "(null)";
if (component != null)
{
compName = component.ToString();
}
if (value != null)
{
valName = value.ToString();
}
Debug.WriteLine("[" + Name + "]: SetValue(" + compName + ", " + valName + ")");
}
#endif
if (component != null)
{
ISite site = GetSite(component);
IComponentChangeService changeService = null;
object oldValue = null;
object invokee = GetInvokee(componentClass, component);
Debug.Assert(!IsReadOnly, "SetValue attempted on read-only property [" + Name + "]");
if (!IsReadOnly)
{
// Announce that we are about to change this component
//
if (site != null)
{
changeService = (IComponentChangeService)site.GetService(typeof(IComponentChangeService));
Debug.Assert(!CompModSwitches.CommonDesignerServices.Enabled || changeService != null, "IComponentChangeService not found");
}
// Make sure that it is ok to send the onchange events
//
if (changeService != null)
{
oldValue = GetMethodValue.Invoke(invokee, null);
try {
changeService.OnComponentChanging(component, this);
}
catch (CheckoutException coEx) {
if (coEx == CheckoutException.Canceled)
{
return;
}
throw coEx;
}
}
try {
try {
SetMethodValue.Invoke(invokee, new object[] { value });
OnValueChanged(invokee, EventArgs.Empty);
}
catch (Exception t) {
// Give ourselves a chance to unwind properly before rethrowing the exception (bug# 20221).
//
value = oldValue;
// If there was a problem setting the controls property then we get:
// ArgumentException (from properties set method)
// ==> Becomes inner exception of TargetInvocationException
// ==> caught here
if (t is TargetInvocationException && t.InnerException != null)
{
// Propagate the original exception up
throw t.InnerException;
}
else
{
throw t;
}
}
}
finally {
// Now notify the change service that the change was successful.
//
if (changeService != null)
{
changeService.OnComponentChanged(component, this, oldValue, value);
}
}
}
}
}
