CS7036 C# 如何解决错误按钮 onclick

Question

I'm using blazor project. I'm trying to import JavaScript function in onclick.

Error CS7036 There is no argument given that corresponds to the required formal parameter 'element' of 'Index.AddDB(ElementReference, int)'

Line of error (onclick)

<button class="btn btn-primary" style="width:100%" @onclick="()=>AddDB()">Calculate</button>

C#

    string name = string.Empty;
IJSObjectReference module;
private ElementReference InNumberPatient;
private ElementReference InInterval;
private ElementReference InMHCProduct;
private ElementReference InComProduct;
private ElementReference InMHCTreatmentTime;
private ElementReference InComTreatmentTime;
private ElementReference InMHCDaysPerDressing;
private ElementReference InComDaysPerDressing;
private ElementReference InMHCLabourTime;
private ElementReference InComLabourTime;
private ElementReference InMHCDressingCost;
private ElementReference InComDressingCost;
private ElementReference InMHCOtherCost;
private ElementReference InComOtherCost;
private ElementReference InMHCLabourCost;
private ElementReference InComLabourCost;

async Task AddDB(ElementReference element)
{
    module = await JSRuntime.InvokeAsync<IJSObjectReference>("import", "./scripts/IndexedDB.js");
    await module.InvokeVoidAsync("IndexedDb", element);
    

}

Answer 1

<button class="btn btn-primary" style="width:100%" @onclick="()=>AddDB()">Calculate</button>

You should pass a parameter of type ElementReference to the AddDB method, like that:

@onclick="()=>AddDB(elementX)"

Note: the parameter elementX is of ElementReference type, defined in your code. It is accepted as ElementReference element in your AddDB method