BWPM/BlazorApp/Pages/Admin/Optionen/OptionenList.razor

@page "/Admin/Optionen/OptionenList"
@inject Blazored.SessionStorage.ISessionStorageService sessionStorage
@inherits ListBase
@using Syncfusion.Blazor.Grids;
@using Syncfusion.Blazor.Buttons;
@using Syncfusion.Blazor.Spinner;
@using BlazorApp.Helper
@using BWPMModels;

@using BlazorApp.Controller;


<h1>Optionen</h1>

<div class="col-lg-12 control-section">
    <div class="content-wrapper">
        <div class="row">
            <SfGrid DataSource="@GridData" @ref="Grid" AllowPaging="true" AllowSorting="true" Toolbar="@(new List<string>() { "Add", "Edit", "Update", "Cancel" })">
                <GridPageSettings PageCount="5" PageSizes="true"></GridPageSettings>
                <GridEditSettings AllowAdding="true" AllowDeleting="false" AllowEditing="true" Mode="EditMode.Dialog"></GridEditSettings>
                <GridEvents OnActionBegin="OnBeginHandler" OnActionComplete="OnCompletedHandler" TValue="Optionen" OnDataBound="RowDataBoundHandler"></GridEvents>
                <GridColumns>
                    <GridColumn Type="ColumnType.CheckBox" AllowFiltering="false" AllowSorting="false" Width="60"></GridColumn>

                    <GridColumn Field=@nameof(Optionen.ID) HeaderText="Id" IsPrimaryKey="true" AllowAdding="false" Width="60"></GridColumn>

                    <GridColumn Field=@nameof(Optionen.mandantnr) HeaderText="Mandantnr" Width="100" Visible="false"></GridColumn>

                    <GridColumn Field=@nameof(Optionen.Bezeichnung) HeaderText="Bezeichnung" Width="100" Visible="true"></GridColumn>

                    <GridColumn Field=@nameof(Optionen.inhalt) HeaderText="Inhalt" Width="200" Visible="true"></GridColumn>

                    <GridColumn Field=@nameof(Optionen.erstellt_am) HeaderText="Erstellt_am" Width="400" Visible="false" Format="d" Type="ColumnType.Date"></GridColumn>

                    <GridColumn Field=@nameof(Optionen.mutiert_am) HeaderText="Mutiert_am" Width="100" Visible="false" Format="d" Type="ColumnType.Date"></GridColumn>

                    <GridColumn Field=@nameof(Optionen.mutierer) HeaderText="Mutierer" Width="100" Visible="false"></GridColumn>

                    <GridColumn Field=@nameof(Optionen.aktiv) HeaderText="Aktiv" Width="100" Visible="false" DisplayAsCheckBox="true"></GridColumn>
                </GridColumns>
            </SfGrid>
        </div>
    </div>
</div>
@code{ SfGrid<Optionen> Grid { get; set; }
    public List<BWPMModels.Optionen> GridData { get; set; }
    public List<BWPMModels.Optionen> Optionens { get; set; }
    string userid = "";
    public static int? pkey { get; set; }
    public bool Initial { get; set; } = true;

    public bool ContinuePaging = true;
    public bool InitialRender { get; set; }
    public int Value = 0; // consider that value your querystring contains
    public int foundrow = 0;

    protected override void OnInitialized()
    {
        /// GridData = OrdersDetails.GetAllRecords();
        GridData = BlazorApp.Controller.OptionenController.GetAllData();
    }

    protected override async Task OnAfterRenderAsync(bool firstRender)
    {

        userid = await sessionStorage.GetItemAsync<string>("UserID");

        if (userid == null)
        {
            var authState = await authenticationStateTask;
            var userId = authState.User.Claims.FirstOrDefault().Value;
            var user = authState.User;

            if (user.Identity.IsAuthenticated)

            {
                await sessionStorage.SetItemAsync("UserID", userId);
            }
            else
            {
                await sessionStorage.SetItemAsync("UserID", userId);
            }
        }
    }
    private async Task OnBeginHandler(ActionEventArgs<BWPMModels.Optionen> Args)

    {
        if (Args.RequestType == Syncfusion.Blazor.Grids.Action.Save)
        {
            if (Args.Action == "Add")
            {

                Args.Data.erstellt_am = DateTime.Now;
                Args.Data.mutierer = userid;
                Args.Data.mutiert_am = DateTime.Now;
                Args.Data.aktiv = true;
                Args.Data.ID = BlazorApp.Controller.OptionenController.POST(Args.Data);
                Value = Args.Data.ID;
            }
            else
            {
                Args.Data.mutierer = userid.ToString();
                Args.Data.mutiert_am = DateTime.Now;
                BlazorApp.Controller.OptionenController.PUT(Args.Data);
            }
        }
    }

    public async Task OnCompletedHandler(ActionEventArgs<BWPMModels.Optionen> Args)

    {
        if (Args.RequestType == Syncfusion.Blazor.Grids.Action.Save)
        {
            await Grid.SetRowData(Args.Data.ID, Args.Data);
            double xx = 0;
            Value = Args.Data.ID;
            xx = await DataHandler();
            await Grid.SelectRow(xx);

        }
    }
    public async void RowDataBoundHandler(BeforeDataBoundArgs<BWPMModels.Optionen> args)
    {
        if (!Initial)
        {
            //await Task.Delay(100);
            //var Idx = await this.Grid.GetRowIndexByPrimaryKey(Convert.ToDouble(Value));   //get index value
            //this.Grid.SelectRow(Convert.ToDouble(Idx));
        }
        Initial = false;
    }

    public async Task<double> DataHandler()
    {
        var PageCount = (GridData.Count / Grid.PageSettings.PageSize) + 1;
        ContinuePaging = true;
        var CurrentPage = 1;
        Grid.Refresh();
        await Grid.GoToPage(1);

        for (int i = 1; i <= PageCount; i++)

        {
            List<Optionen> Rows = await Grid.GetCurrentViewRecords(); // returns the current view data
            for (int j = 0; j < Grid.PageSettings.PageSize; j++)
            {
                if (j < Rows.Count && Rows[j].ID == Value)
                {
                    foundrow = j;

                    ContinuePaging = false; // prevent the default navigation
                    break;
                }
            }
            if (ContinuePaging)
            {
                if (i >= PageCount)
                {
                    i = 0;
                }
                await Grid.GoToPage(i + 1);

            }
            else
            {
                return foundrow;
            }
        }
        return foundrow;
    } }