Seeking guidance on creating a unique ASP.NET Custom Control with two grid elements. Any tips or

Looking for guidance on how to create a custom control that utilizes two grids with an Add and Remove button in between.

When the Add button is clicked, the selected item from the left grid should be moved to the right grid and removed from the left grid. The Remove button should do the opposite.

I am aware that Javascript will likely need to be used to achieve a smooth user experience.

Currently, I am working on a control that inherits CompositeControl and includes two grids and two sources. I am considering using an UpdatePanel to avoid a complete post back when performing the Add/Remove actions.

Would appreciate any suggestions on the best approach to tackle this design challenge.

javascriptc#asp.net

Answer №1

I have utilized Kendo to create this sample. I have included and excluded certain sections for supervisors in my project. Below is the main Action you need:

        public ActionResult AddPathToSupervisor()
    {
                return View();
    }

In my sample, the view allows you to select a supervisor and then add paths to them. You will need 2 grids and 2 buttons in the view as shown below:

<div class="row">
<div class="col large">
    @(Html.Kendo().ComboBox()
    .Name("supervisor")
    .BindTo(SupervisorsSelectList)//var DocumetTypesSelectList = ViewBag.DocumetTypesSelectList as List<SelectListItem> ?? new List<SelectListItem>();
    .Events(e => e.Change("changeSupervisor"))

    )
</div>
</div>

<div class="row">
    <div class="col medium">
        <p>New Paths</p>
    </div>
    <div class="col medium">
        <p></p>
    </div>
    <div class="col medium">
        <p>Supervisor Paths</p>
    </div>

</div>

<div class="row">
    <div class="col medium">
        @(Html.Kendo().Grid<Distribution.Models.Path>()
            .Name("newPathsGrid")
            .Columns(columns =>
            {
                columns.Bound(p => p.PathId).Visible(false);
                columns.Bound(p => p.Title).Title(PathResource.Paths);
            })
            .Sortable()
            .Scrollable()
            .Navigatable()
            .Filterable(filterable => filterable.Extra(false))
                //.HtmlAttributes(new { style = "height:480px;" })
            .Resizable(resize => resize.Columns(true))
            .Selectable(s => s.Mode(GridSelectionMode.Multiple))
            .DataSource(dataSource => dataSource
                .Ajax()
                //.PageSize(15)
                .Events(events => events.Error("error_handler"))
                .Model(model =>
                {
                    model.Id(p => p.PathId);
                    model.Field(p => p.PathId).DefaultValue(new Guid());
                })
                .Read(read => read.Action("FillNewSupervisorPathsGrid", "Paths"))
            )
        )
    </div>


<div class="col medium">
        <input type="button" id="addPathToSupervisor" value=">>Add>>" />
        <input type="button" id="removePathFromSupervisor" value="<<Remove<<" />
    </div>


<div class="col medium k-rtl">
        @(Html.Kendo().Grid<Distribution.Models.Path>()
            .Name("supervisorPathGrid")
            .Columns(columns =>
            {
                columns.Bound(p => p.PathId).Visible(false);
                columns.Bound(p => p.Title).Title(PathResource.Paths);
            })

        //.Pageable()
            .Sortable()
            .Scrollable()
            .Navigatable()
            .Filterable(filterable => filterable.Extra(false))
                //.HtmlAttributes(new { style = "height:480px;" })
            .Resizable(resize => resize.Columns(true))
            .Selectable(s => s.Mode(GridSelectionMode.Multiple))
            .DataSource(dataSource => dataSource
                .Ajax()
                //.PageSize(15)
                .Events(events => events.Error("error_handler"))
                .Model(model =>
                {
                    model.Id(p => p.PathId);
                    model.Field(p => p.PathId).DefaultValue(new Guid());
                })
                .Read(read => read.Action("FillSupervisorPathsGrid", "Paths", new { id = ViewBag.SupervisorId }))
            )
        )
    </div>
</div>

This JavaScript code is used to select the Supervisor's ID:

<script type="text/javascript">
function changeSupervisor(e) {
    var id = this.value();
    var supervisorPathGrid = $("#supervisorPathGrid").data("kendoGrid");
    supervisorPathGrid.dataSource.read({ id: id });
}

Below is the JavaScript code to add and remove paths:

<script type="text/javascript">
var supervisorPathGrid = $("#supervisorPathGrid").data("kendoGrid");
var newPathsGrid = $("#newPathsGrid").data("kendoGrid");
var selectedItem = $("#supervisor").data("kendoComboBox");

$(document).on('click', '#addPathToSupervisor', function (e) {
    e.preventDefault();
    var supervisorId = selectedItem.value();
    if (hasManyRowSelected(newPathsGrid)) {
        var values = [];
        values.push({
            name: "supervisorId",
            value: supervisorId
        });
        newPathsGrid.select().each(function () {
            values.push({
                name: "ids",
                value: newPathsGrid.dataItem(this).PathId
            });
        });
        $.ajax({
            url: '@Url.Action("AddPathToSupervisor")',
            type: 'POST',
            datatype: "json",
            traditional: true,
            data: values,
            success: function () {
                newPathsGrid.select().each(function () {
                    var $this = $(this);
                    var data = newPathsGrid.dataItem($this);
                    supervisorPathGrid.dataSource.insert(0, data);
                });
                newPathsGrid.select().each(function () {
                    var $this = $(this);
                    var data = newPathsGrid.dataItem($this);
                    newPathsGrid.removeRow($this);
                });
            },
            beforeSend: function () {
                $('#addPathToSupervisor').attr("disabled", true);
                $('#addPathToSupervisor').addClass("ajax-load");
            },
            error: function (event, request, settings) {
                ajax_exception(event);
            },
            complete: function () {
                $('#addPathToSupervisor').attr("disabled", false);
                $('#addPathToSupervisor').removeClass("ajax-load");
                grid.dataSource.read();
            },
            timeout: 50000
        });
    }
});
$(document).on('click', '#removePathFromSupervisor', function (e) {
    e.preventDefault();
    var supervisorId = selectedItem.value();
    if (hasManyRowSelected(supervisorPathGrid)) {
        var values = [];
        supervisorPathGrid.select().each(function () {
            values.push({
                name: "ids",
                value: supervisorPathGrid.dataItem(this).PathId
            });
        });
        $.ajax({
            url: '@Url.Action("RemovePathFromSupervisor")',
            type: 'POST',
            datatype: "json",
            traditional: true,
            data: values,
            success: function () {
                supervisorPathGrid.select().each(function () {
                    var $this = $(this);
                    var data = supervisorPathGrid.dataItem($this);
                    newPathsGrid.dataSource.insert(0, data);
                });
                supervisorPathGrid.select().each(function () {
                    var $this = $(this);
                    var data = supervisorPathGrid.dataItem($this);
                    supervisorPathGrid.removeRow($this);
                });
            },
            beforeSend: function () {
                $('#removePathFromSupervisor').attr("disabled", true);
                $('#removePathFromSupervisor').addClass("ajax-load");
            },
            error: function (event, request, settings) {
                ajax_exception(event);
            },
            complete: function () {
                $('#removePathFromSupervisor').attr("disabled", false);
                $('#removePathFromSupervisor').removeClass("ajax-load");
                grid.dataSource.read();
            },
            timeout: 50000
        });
    }
});

Next, you will need two POST methods to add and remove paths:

    [HttpPost]
    public ActionResult AddPathToSupervisor(string[] ids, string supervisorId)
    {
        try
        {
            PathsBll.AddPathsToSupervisor(ids, supervisorId);
        }
        catch (Exception ex)
        {
            throw ex;
        }
        return Json(ModelState.ToDataSourceResult());
    }

    [HttpPost]
    public ActionResult RemovePathFromSupervisor(string[] ids)
    {
        try
        {
            PathsBll.RemovePathsFromSupervisor(ids);
        }

        catch (Exception ex)
        {
            throw ex;
        }
        return Json(ModelState.ToDataSourceResult());
    }

You can use LINQ to add or remove paths based on their IDs. Familiarity with Kendo will help understand how to populate each grid. Feel free to ask for more details if needed. Good luck!

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