BindingsCollection Class
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BindingsCollection Class

 

Represents a collection of Binding objects for a control.

Namespace:   System.Windows.Forms
Assembly:  System.Windows.Forms (in System.Windows.Forms.dll)

System.Object
  System.MarshalByRefObject
    System.Windows.Forms.BaseCollection
      System.Windows.Forms.BindingsCollection
        System.Windows.Forms.ControlBindingsCollection

public class BindingsCollection : BaseCollection

NameDescription
System_CAPS_pubpropertyCount

Gets the total number of bindings in the collection.(Overrides BaseCollection.Count.)

System_CAPS_pubpropertyIsReadOnly

Gets a value indicating whether the collection is read-only.(Inherited from BaseCollection.)

System_CAPS_pubpropertyIsSynchronized

Gets a value indicating whether access to the ICollection is synchronized.(Inherited from BaseCollection.)

System_CAPS_pubpropertyItem[Int32]

Gets the Binding at the specified index.

System_CAPS_protpropertyList

This API supports the product infrastructure and is not intended to be used directly from your code. Gets the bindings in the collection as an object.(Overrides BaseCollection.List.)

System_CAPS_pubpropertySyncRoot

Gets an object that can be used to synchronize access to the BaseCollection.(Inherited from BaseCollection.)

NameDescription
System_CAPS_protmethodAdd(Binding)

Adds the specified binding to the collection.

System_CAPS_protmethodAddCore(Binding)

This API supports the product infrastructure and is not intended to be used directly from your code. Adds a Binding to the collection.

System_CAPS_protmethodClear()

Clears the collection of binding objects.

System_CAPS_protmethodClearCore()

This API supports the product infrastructure and is not intended to be used directly from your code. Clears the collection of any members.

System_CAPS_pubmethodCopyTo(Array, Int32)

Copies all the elements of the current one-dimensional Array to the specified one-dimensional Array starting at the specified destination Array index.(Inherited from BaseCollection.)

System_CAPS_pubmethodCreateObjRef(Type)

Creates an object that contains all the relevant information required to generate a proxy used to communicate with a remote object.(Inherited from MarshalByRefObject.)

System_CAPS_pubmethodEquals(Object)

Determines whether the specified object is equal to the current object.(Inherited from Object.)

System_CAPS_protmethodFinalize()

Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.(Inherited from Object.)

System_CAPS_pubmethodGetEnumerator()

Gets the object that enables iterating through the members of the collection.(Inherited from BaseCollection.)

System_CAPS_pubmethodGetHashCode()

Serves as the default hash function. (Inherited from Object.)

System_CAPS_pubmethodGetLifetimeService()

Retrieves the current lifetime service object that controls the lifetime policy for this instance.(Inherited from MarshalByRefObject.)

System_CAPS_pubmethodGetType()

Gets the Type of the current instance.(Inherited from Object.)

System_CAPS_pubmethodInitializeLifetimeService()

Obtains a lifetime service object to control the lifetime policy for this instance.(Inherited from MarshalByRefObject.)

System_CAPS_protmethodMemberwiseClone()

Creates a shallow copy of the current Object.(Inherited from Object.)

System_CAPS_protmethodMemberwiseClone(Boolean)

Creates a shallow copy of the current MarshalByRefObject object.(Inherited from MarshalByRefObject.)

System_CAPS_protmethodOnCollectionChanged(CollectionChangeEventArgs)

Raises the CollectionChanged event.

System_CAPS_protmethodOnCollectionChanging(CollectionChangeEventArgs)

Raises the CollectionChanging event.

System_CAPS_protmethodRemove(Binding)

Deletes the specified binding from the collection.

System_CAPS_protmethodRemoveAt(Int32)

Deletes the binding from the collection at the specified index.

System_CAPS_protmethodRemoveCore(Binding)

This API supports the product infrastructure and is not intended to be used directly from your code. Removes the specified Binding from the collection.

System_CAPS_protmethodShouldSerializeMyAll()

Gets a value that indicates whether the collection should be serialized.

System_CAPS_pubmethodToString()

Returns a string that represents the current object.(Inherited from Object.)

NameDescription
System_CAPS_pubeventCollectionChanged

Occurs when the collection has changed.

System_CAPS_pubeventCollectionChanging

Occurs when the collection is about to change.

NameDescription
System_CAPS_pubmethodAsParallel()

Overloaded. Enables parallelization of a query.(Defined by ParallelEnumerable.)

System_CAPS_pubmethodAsQueryable()

Overloaded. Converts an IEnumerable to an IQueryable.(Defined by Queryable.)

System_CAPS_pubmethodCast<TResult>()

Casts the elements of an IEnumerable to the specified type.(Defined by Enumerable.)

System_CAPS_pubmethodOfType<TResult>()

Filters the elements of an IEnumerable based on a specified type.(Defined by Enumerable.)

Simple data binding is accomplished by adding Binding objects to a BindingsCollection. Any object that inherits from the Control class can access the BindingsCollection through the DataBindings property. For a list of Windows controls that support data binding, see the Binding class.

The following example binds the Text property of a TextBox control to a field in a database.

private void BindTextBoxControl()
{
   DataSet myDataSet = new DataSet();
   /* Insert code to populate the DataSet with tables, 
   columns, and data. */

   // Creates a new Binding object. 
   Binding myBinding = new Binding
   ("Text", myDataSet, "customers.custToOrders.OrderAmount");

   // Adds event delegates for the Parse and Format events.
   myBinding.Parse += new ConvertEventHandler(CurrencyToDecimal);
   myBinding.Format += new ConvertEventHandler(DecimalToCurrency);

   // Adds the new Binding to the BindingsCollection.
   text1.DataBindings.Add(myBinding);
}

private void DecimalToCurrency(object sender, 
   ConvertEventArgs cevent)
{
   /* This method is the Format event handler. Whenever the 
   control displays a new value, the value is converted from 
   its native Decimal type to a string. The ToString method 
   then formats the value as a Currency, by using the 
   formatting character "c". */
   cevent.Value = ((decimal) cevent.Value).ToString("c");
}

private void CurrencyToDecimal(object sender, 
   ConvertEventArgs cevent)
{   
   /* This method is the Parse event handler. The Parse event 
   occurs whenever the displayed value changes. The static 
   Parse method of the Decimal structure converts the 
   string back to its native Decimal type. */
   cevent.Value = Decimal.Parse(cevent.Value.ToString(),
   NumberStyles.Currency, null);
}

.NET Framework
Available since 1.1

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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