public override StandardValuesCollection GetStandardValues(ITypeDescriptorContext context)
{
if (context != null && context.Instance != null)
{
object instance = context.Instance;
PropertyDescriptor imageListProp = ImageListUtils.GetImageListProperty(context.PropertyDescriptor, ref instance);
while (instance != null && imageListProp is null)
{
PropertyDescriptorCollection props = TypeDescriptor.GetProperties(instance);
foreach (PropertyDescriptor prop in props)
{
if (typeof(ImageList).IsAssignableFrom(prop.PropertyType))
{
imageListProp = prop;
break;
}
}
if (imageListProp is null)
{
// We didn't find the image list in this component. See if the
// component has a "parent" property. If so, walk the tree...
//
PropertyDescriptor parentProp = props[ParentImageListProperty];
if (parentProp != null)
{
instance = parentProp.GetValue(instance);
}
else
{
// Stick a fork in us, we're done.
//
instance = null;
}
}
}
if (imageListProp != null)
{
ImageList imageList = (ImageList)imageListProp.GetValue(instance);
if (imageList != null)
{
// Create array to contain standard values
//
object[] values;
int nImages = imageList.Images.Count;
if (IncludeNoneAsStandardValue)
{
values = new object[nImages + 1];
values[nImages] = -1;
}
else
{
values = new object[nImages];
}
// Fill in the array
//
for (int i = 0; i < nImages; i++)
{
values[i] = i;
}
return(new StandardValuesCollection(values));
}
}
}
if (IncludeNoneAsStandardValue)
{
return(new StandardValuesCollection(new object[] { -1 }));
}
else
{
return(new StandardValuesCollection(Array.Empty <object>()));
}
}
public DataGridTextBoxColumn(PropertyDescriptor prop, bool isDefault) : this(prop, null, isDefault)
{
}
/// <devdoc>
/// Gets the best matching ctor for a given binding and fills it out, based on the
/// state of the Binding and the optimal ctor.
/// </devdoc>
private InstanceDescriptor GetInstanceDescriptorFromValues(Binding b)
{
// The BindingFormattingDialog turns on Binding::FormattingEnabled property.
// however, when the user data binds a property using the PropertyBrowser, Binding::FormattingEnabled is set to false
// The Binding class is not a component class, so we don't have the ComponentInitialize method where we can set FormattingEnabled to true
// so we set it here.
b.FormattingEnabled = true;
bool isComplete = true;
int lastItem = ConstructorParameterProperties.Length - 1;
for (; lastItem >= 0; lastItem--)
{
// null means no prop is available, we quit here.
//
if (ConstructorParameterProperties[lastItem] == null)
{
break;
}
// get the property and see if it needs to be serialized.
//
PropertyDescriptor prop = TypeDescriptor.GetProperties(b)[ConstructorParameterProperties[lastItem]];
if (prop != null && prop.ShouldSerializeValue(b))
{
break;
}
}
// now copy the type array up to the point we quit.
//
Type[] ctorParams = new Type[lastItem + 1];
Array.Copy(ConstructorParamaterTypes, 0, ctorParams, 0, ctorParams.Length);
// Get the ctor info.
//
ConstructorInfo ctor = typeof(Binding).GetConstructor(ctorParams);
Debug.Assert(ctor != null, "Failed to find Binding ctor for types!");
if (ctor == null)
{
isComplete = false;
ctor = typeof(Binding).GetConstructor(new Type[] {
typeof(string),
typeof(object),
typeof(string)
});
}
// now fill in the values.
//
object[] values = new object[ctorParams.Length];
for (int i = 0; i < values.Length; i++)
{
object val = null;
switch (i)
{
case 0:
val = b.PropertyName;
break;
case 1:
val = b.BindToObject.DataSource;
break;
case 2:
val = b.BindToObject.BindingMemberInfo.BindingMember;
break;
default:
val = TypeDescriptor.GetProperties(b)[ConstructorParameterProperties[i]].GetValue(b);
break;
}
values[i] = val;
}
return(new InstanceDescriptor(ctor, values, isComplete));
}
public DataGridTextBoxColumn(PropertyDescriptor prop)
: this(prop, null, false)
{
}
public DataGridTextBoxColumn(PropertyDescriptor prop, string format) : this(prop, format, false)
{
}
public override StandardValuesCollection GetStandardValues(ITypeDescriptorContext context)
{
if (context != null && context.Instance != null)
{
object instance = context.Instance;
ImageList imageList = null;
PropertyDescriptorCollection listViewItemProps = TypeDescriptor.GetProperties(instance);
PropertyDescriptor listViewProp = listViewItemProps["ListView"];
if (listViewProp != null)
{
// Grab the ListView property off of the TreeNode.
object listViewInstance = listViewProp.GetValue(instance);
if (listViewInstance != null)
{
// Get the ImageList property from the ListView and set it to be the currentImageList.
PropertyDescriptorCollection listViewProps = TypeDescriptor.GetProperties(listViewInstance);
PropertyDescriptor listViewImageListProperty = listViewProps["StateImageList"];
if (listViewImageListProperty != null)
{
imageList = (ImageList)listViewImageListProperty.GetValue(listViewInstance);
}
}
}
if (imageList != null)
{
// Create array to contain standard values
object[] values;
int nImages = imageList.Images.Count;
if (IncludeNoneAsStandardValue)
{
values = new object[nImages + 1];
values[nImages] = ImageList.Indexer.DefaultIndex;
}
else
{
values = new object[nImages];
}
// Fill in the array
for (int i = 0; i < nImages; i++)
{
values[i] = i;
}
return(new StandardValuesCollection(values));
}
}
if (IncludeNoneAsStandardValue)
{
return(new StandardValuesCollection(new object[] { ImageList.Indexer.DefaultIndex }));
}
else
{
return(new StandardValuesCollection(Array.Empty <object>()));
}
}
object ICustomTypeDescriptor.GetPropertyOwner(PropertyDescriptor pd)
{
throw null;
}
internal BindingManagerBase EnsureListManager(object dataSource, string dataMember)
{
if (dataMember == null)
{
dataMember = "";
}
HashKey key = GetKey(dataSource, dataMember);
WeakReference wRef;
BindingManagerBase bindingManagerBase = null;
wRef = listManagers[key] as WeakReference;
if (wRef != null)
{
bindingManagerBase = (BindingManagerBase)wRef.Target;
}
if (bindingManagerBase != null)
{
return(bindingManagerBase);
}
// create base listManager.
if (dataMember.Length == 0)
{
//IListSource so we can bind the dataGrid to a table and a dataSet
if (dataSource is IList || dataSource is IListSource)
{
bindingManagerBase = new CurrencyManager(dataSource);
}
else
{
bindingManagerBase = new PropertyManager(dataSource);
}
// if wRef == null, then it is the first time we want this bindingManagerBase: so add it
// if wRef != null, then the bindingManagerBase was GC'ed at some point: keep the old wRef and change its target
if (wRef == null)
{
listManagers.Add(key, new WeakReference(bindingManagerBase, false));
}
else
{
wRef.Target = bindingManagerBase;
}
return(bindingManagerBase);
}
// handle relation.
int lastDot = dataMember.LastIndexOf(".");
BindingManagerBase formerManager = EnsureListManager(dataSource, lastDot == -1 ? "" : dataMember.Substring(0, lastDot));
PropertyDescriptor prop = formerManager.GetItemProperties().Find(dataMember.Substring(lastDot + 1), true);
if (prop == null)
{
throw new ArgumentException(SR.GetString(SR.RelatedListManagerChild, dataMember.Substring(lastDot + 1)));
}
if (typeof(IList).IsAssignableFrom(prop.PropertyType))
{
bindingManagerBase = new RelatedCurrencyManager(formerManager, dataMember.Substring(lastDot + 1));
}
else
{
bindingManagerBase = new RelatedPropertyManager(formerManager, dataMember.Substring(lastDot + 1));
}
// if wRef == null, then it is the first time we want this bindingManagerBase: so add it
// if wRef != null, then the bindingManagerBase was GC'ed at some point: keep the old wRef and change its target
if (wRef == null)
{
listManagers.Add(GetKey(dataSource, dataMember), new WeakReference(bindingManagerBase, false));
}
else
{
wRef.Target = bindingManagerBase;
}
return(bindingManagerBase);
}
/// <include file='doc\DataGridBoolColumn.uex' path='docs/doc[@for="DataGridBoolColumn.DataGridBoolColumn2"]/*' />
public DataGridBoolColumn(PropertyDescriptor prop, bool isDefault)
: base(prop, isDefault)
{
}
/// <include file='doc\DataGridBoolColumn.uex' path='docs/doc[@for="DataGridBoolColumn.DataGridBoolColumn1"]/*' />
/// <devdoc>
/// <para>Initializes a new instance of a <see cref='System.Windows.Forms.DataGridBoolColumn'/> with the specified <see cref='System.Data.DataColumn'/>.</para>
/// </devdoc>
public DataGridBoolColumn(PropertyDescriptor prop)
: base(prop)
{
}
