or
var foreignKeyGrid = $("#grid").data("kendoGrid");
delete foreignKeyGrid.columns[1].values; //deletes the foreign key mappings from the "Category"-Column
foreignKeyGrid.refresh();[Range(0.01, 1.00)]public decimal? Percentile { get; set; }@Html.TextBoxFor(m => m.Percentile, new { @class = "k-textbox k-input" }) @Html.Kendo().NumericTextBoxFor(m => m.Percentile)<input id="AllGuidelines_0__Percentile" class="k-textbox k-input" type="text" value="" name="AllGuidelines[0].Percentile" data-val-range-min="0.01" data-val-range-max="1" data-val-range="The field Percentile must be between 0.01 and 1." data-val-number="The field Starting Percentile must be a number." data-val="true">