Hello,

I am working on an application that the client has just added additional filter criteria beyond what grid filter provides.

I believe I might be able to do this using the example here Create Filter Widgets with Multiple Filter Criteria | Kendo UI Grid for jQuery | Kendo UI for jQuery (telerik.com) - maybe. I'm using ASP.Net Core 5 Razor pages so sometimes examples don't always work.

All of the fields (except for a couple that are date fields) are char or text type columns in the database.  The client wants to be able to use functions like "greater than", "in",  and "Is one of".  (I know greater than is not going to give them what they think) but the In condition or the Is One of condition they say are needed.

The filter now for 2 items is not enough.

For example, they need to filter for several POs at once - as you might do with a sql query SELECT * FROM tableaname WHERE fieldname in ('po1', 'po1', 'po3', 'po4') as an example.  none of the data is sequential so the need for "IN" or "IS ONE OF" filtering conditions.

Is this possible?

How would it be coded and handled on the backend?

Are the available filters documented somewhere here on the site?

Can we use wild cards in the filter value?  As when the search condition may vary inside the string and not with the start or end with characters?

thanks!

I'm updating an application (based on version v2021.2.511) porting bits of code to a new application based on v2022.2.510). I'm trying to get a multi-select drop-down list with checkboxes working.  The requirment is for the check boxes to be checked if an item in the list is selected, and unchecked if it is unselected.

The following styles were added:-

<style type="text/css">

    @*.EditButton {
        display:@ViewBag.EditButton;
    }*@

    .nopadding {
   padding-left: 0 !important;
    padding-right: 0 !important;

}

 .k-multiselect:after {
         content: "\25BC";
         position: absolute;
         top: 30%;
         right: 10px;
         font-size: 10px;
     }

    .k-multiselect-wrap.k-floatwrap li.k-button .k-icon.k-i-close
  {
    display: none !important;
  }

}
</style>

<style scoped>

    .k-widget.k-multiselect {
        width: 300px;
        vertical-align: middle;
        display: inline-block;
    }
</style>

The multiselect definition is:-

 @(Html.Kendo().MultiSelect()
                                .Name("msSpecialty")
                                .DataValueField("Code")
                                .DataTextField("Description")
                                    .Placeholder("All specialties...")
                                    .ItemTemplate("<input type='checkbox' /> #=data.Description#")
                                    .AutoClose(false)
                                    .ClearButton(false)
                                    .TagMode(TagMode.Multiple)
                                //.TagTemplate(" <span>#= Description #</span>")

                                .Events(e => e.Close("onSpecListChange").DataBound("specListDataBound").Change("chkFix"))
                                .DataSource(src => src.Read(rd => rd.Action("getOpenClockSpecDDL", "Validation")).ServerFiltering(false))
                                    .HtmlAttributes(new { style = "width:300px;" })
                        )

And the javascript:-

 var currentSpec = '-X-';

 function onSpecListChange() {
        var items = this.ul.find("li");
        checkInputs(items);
        //check if list has changed since last close, if so, fire change event (Avoids unnescessary requeries)

        var multiselect = $("#msSpecialty").data("kendoMultiSelect");
        var Svalue = multiselect.value().sort();

        var SpecString = "";

        if (Svalue != null & Svalue != '') {


            for (i = 0; i < Svalue.length; i++) {
                SpecString = SpecString + Svalue[i] + "|";
            }

        }
        else {
            SpecString = "-X-";
        }



        if (currentSpec != SpecString) {
            onChange();
        }




    }

    function checkInputs(elements) {
        elements.each(function () {
            var element = $(this);
            var input = element.children("input");

            input.prop("checked", element.hasClass("k-state-selected"));
        });
    }

    function specListDataBound() {

        var items = this.ul.find("li");
        setTimeout(function () {
            checkInputs(items);
        });

    }

    function chkFix() {
        var items = this.ul.find("li");
        setTimeout(function () {
            checkInputs(items);
        });
    }

 function onChange()
    {

    }

I assume the styles have changed between the versions, because this code is not working. The checkboxes aren't being checked on selection, the list doesn't close when clicked away from, and the closed multiselect isn't displaying properly.  How can I get it working as it was please?

hi, 

I'm maintaing a ASP.NET MVC 5.2.7 webapp with kendo 2021.2.616,  the question is: will this version of kendo work when the webapp is migrated to .Net 6? otherwise is there a kendo roadmap for such kind of migration?

regards and happy holidays

I have created an ASP.NET MVC application and I am using Telerik Grid control in it. An issue is reported by QA that if the page call via postman is issued with incorrect values for page, size or filter parameters e.g., filter=aaaaaaaaaaaa, it results in crashing the page. Is there anyway to handle the incorrect values for these three grid attributes and instead of error dump on webpage, default value gets assigned to erroneous parameter.

Version Information
.NET Runtime: 4.7
Telerik Web MVC: 2013.2.611.340

I'm implementing a file manager in an MVC site that works with files located somewhere other than the site. I have got this working fine as long as I stay in the root directory. Trying to change into another directory throws the following error in the console:

Error! Could not navigate to the folder at the requested path(/Message Attachments). Make sure that the parent folder of the target folder has already been loaded.

As changing directories doesn't seem to be triggering anything on the server, I'm at a loss as to how to troubleshoot this.

The code in the view is pretty much right out of the demo at this point:

I am using @Html.Kendo().Spreadsheet() on a Razor page in a DotNet Core App. I want to Configure which options are available on the Toolbar and add a Custom one. I see from an older question from 2017, adding a Custom button was not supported back then. Has that changed?

Can someone point me to the appropriate documentation for that please.

I have a grid filter on a column that doesn't allow decimals.  I tried the solution provided in this forum topic but it appears to only work when Mode(GridFilterMode.Row) is set but I have to use Mode(GridFilterMode.Menu).  Do you have a working example for the Mode(GridFilterMode.Menu) option to ensure that decimals don't show up in the input after you filter the grid and reopen the filter input menu or focus out of the filter input for the numeric text box?

code for the column in the grid:

columns.Bound(c => c.ProspectID).Title("ID").Sortable(true).Filterable(ftb => ftb.Cell(cell => cell.Template("customFilter"))).Format("{0:N0}");

Custom form to export the excel from a grid external html button:

<form class="grid-export" action="@Url.Action("CreateExcelFile")" method="POST">
     <input type="hidden" id="export-grid" name="grid" value="" />
     <input type="hidden" id="export-model" name="model" value="" />
     <input type="hidden" id="export-title" name="title" value="Prospects Export" />
     <input type="hidden" id="export-format" name="format" value="xlsx" />
     <input type="hidden" id="export-criteria" name="criteria" value="" />
     <button id="btnGridExport" type="submit" class="submitButtons secondary" onclick="exportExcel()">Export</button>
</form>

JavaScript code to align to that so far:

function exportExcel() {
    var grid = $("#prospectGrid").data("kendoGrid");
    $("#export-model").val(encodeURIComponent(JSON.stringify(grid.columns)));
    $("#export-grid").val("prospectGrid");
    closeGridExport();
}

function customFilter(args) {
    args.element.kendoNumericTextBox({
        decimals: 0,
        format: "n0"
    });
}

Thanks,

Sean