SpreadsheetOptionsExtensions.RegisterGlobalCustomFunction(SpreadsheetOptions, ICustomFunction) Method

Registers the specified global custom function.

Namespace: DevExpress.AspNetCore

Assembly: DevExpress.AspNetCore.Spreadsheet.v25.1.dll

NuGet Package: DevExpress.AspNetCore.Spreadsheet

Declaration

public static SpreadsheetOptions RegisterGlobalCustomFunction(
    this SpreadsheetOptions spreadsheetOptions,
    ICustomFunction customFunction
)

Parameters

Name	Type	Description
spreadsheetOptions	SpreadsheetOptions	Spreadsheet options.
customFunction	ICustomFunction	A custom function.

Returns

Type	Description
SpreadsheetOptions	An object that can be used to further configure the Spreadsheet options.

Remarks

Follow the steps below to create a custom function.

1. Create a class that implements the ICustomFunction interface and performs calculations.
2. Pass an instance of the class to the static RegisterGlobalCustomFunction method as a parameter.

The example below demonstrates how to create a custom function:

Program.cs

builder.Services.AddSingleton<IHttpContextAccessor, HttpContextAccessor>();
builder.Services.AddDevExpressControls(options => {
    options.AddSpreadsheet( spreadsheetOptions => {
        spreadsheetOptions
            .RegisterGlobalCustomFunction(new MyFunc());
    });
});

To make a custom function available in Intellisense, add a description for this function on the client:

Razor C#

<script>
    function onInit(s, e){
        ASPxClientSpreadsheet.Functions.push({ name: "MYFUNC", description: "My Custom Function", arguments: [ { name: "string", description: "add some string parameter" } ] });
    }
</script>

@(Html.DevExpress() 
    .Spreadsheet("spreadsheet") 
    .ClientSideEvents(e => {
        e.OnInit("onInit");
    })
)