QuotesProvider Class (Component)
The QuotesProvider allows access to updated information from the quotes data stream for a specified list of quote fields for a symbol. The Updated event is called whenever a change occurs in the quotes data.
Typically, you will use the Toolbox to add a component to your EasyLanguage document. Click and drag the name QuotesProvider into your document from the Toolbox. The name of the provider appears in the component tray at the bottom of your document. By default, the name is followed by a number to identify multiple instances of the component.
Open the Properties editor and locate the Symbol and Fields properties under "Filters". Both are required fields. A comma delimited list of fields (eg. "AskSize, DailyLimit"), specifies the values that will be available from the QuotesProvider.
To reference a property value for a quotes provider object in EasyLanguage code, use QuotesProvider1 followed by a 'dot operator', and the property name. Available quotes provider properties, including inherited properties, will appear in the Autocomplete list. To get data for one of the field names entered in the Properties editor, use the “Quote” property, followed by the field name within square brackets and double quotes[“field name”]. Add a second ‘dot operator’ and the type of the value to be returned.
Value1=QuotesProvider1.Quote["ask"].DoubleValue; // gets the Ask price for a specific symbol. Type MUST be known before using this.
For general information about providers, refer to Provider Classes.
Namespace: tsdata.marketdata
Properties
Additional
properties, methods, and events are described in the classes listed
under Inheritance Hierarchy (see below).
| Name | Type | Description | |
|
Count | int | Gets the number of available quotes in the provider collection. |
|
|
Data | object | Gets the Quotes data object. |
|
|
Fields | list | Gets and sets the TokenList of names that represent quote fields that may be accessed in the provider collection. See QuoteFields for a list of names. |
|
|
Quote[index] | object | Gets the Quote object with the specified index position within the Fields list. |
|
|
Quote[name] | object | Gets the Quote object with the specified name included in the Fields list. See QuoteFields for a list of available names. |
|
|
Symbol | string | Gets and sets the symbol for which quotes are to be provided. |
Methods
| Name | Description | |
|
Contains(QuoteFieldName) | True if the quote with the specified field name exists in the collection. |
|
|
Contains(QuoteObj) | True if the specified quote object exists in the collection. |
|
|
Create() | Initializes a new instance of the QuotesProvider class. |
Events
| Name | Description | |
 |
Updated | Occurs when the requested quote field's value is updated. See QuoteUpdatedEventArgs for the properties provided to the event handler when this event fires. |
Example
The following RadarScreen example uses a QuotesProvider to display the ratio between each symbol and a reference symbol.
|
QuotesProvider indicator for RadarScreen |
Import Example- Click on the Import Example link to import the example into TradeStation.
- Go to the TradeStation platform and create a RadarScreen window. Use the Insert - Indicator menu sequence and Add to the RadarScreen window at the selected column location.
- To review of modify the example code, go to the TS Development Environment and open indicator in the EasyLanguage Editor.