ICustomFunctionDescriptionsRegisterService.RegisterFunctionDescriptions(String, String, CustomFunctionArgumentsDescriptionsCollection) Method
Specifies text descriptions for use in the Function Argument dialog invoked for the specified custom function.
Namespace: DevExpress.Spreadsheet.Functions
Assembly: DevExpress.Spreadsheet.v19.1.Core.dll
Declaration
Parameters
Name | Type | Description |
---|---|---|
functionName | String | A string that is the name of a custom function for which descriptions are specified. The function name is defined by the IFunction.Name property. |
functionDescription | String | A string that describes the custom function itself. |
argumentsDescriptions | CustomFunctionArgumentsDescriptionsCollection | A collection of descriptions for the function arguments. |
Example
This example illustrates the use of the ICustomFunctionDescriptionsRegisterService service for the SPHEREMASS custom function defined in the WinForms SpreadsheetControl API - Part 2 example available in the DevExpress Code Examples database at http://www.devexpress.com/example=E4832.
SphereMassFunction customFunction = new SphereMassFunction();
if (!workbook.CustomFunctions.Contains(customFunction.Name))
{
workbook.CustomFunctions.Add(customFunction);
// Get a service to specify the function description.
ICustomFunctionDescriptionsRegisterService service = (ICustomFunctionDescriptionsRegisterService)workbook.GetService(typeof(ICustomFunctionDescriptionsRegisterService));
if (service == null)
return;
CustomFunctionArgumentsDescriptionsCollection arguments = new CustomFunctionArgumentsDescriptionsCollection();
arguments.Add(new CustomFunctionArgumentDescription("Radius", "Radius of a sphere, m", "number"));
arguments.Add(new CustomFunctionArgumentDescription("Density", "Material density, kg/m3", "number"));
service.RegisterFunctionDescriptions("SPHEREMASS", "Calculates the mass of a sphere made of a certain material.", arguments);
}
See Also