[Solved] ASP.Net Button Click Error: DataTables warning: table id=gvDetails - Cannot reinitialise DataTable

lingers says:

("form:first")

It is called first selector. It selects the first matched form element.

For more details refer below link.

https://api.jquery.com/first-selector/

When jquery dialog is opening, set the label value to empty.

function ShowPopup1() {
    $('#label7').html('');
    $("#dialog1").dialog({
        title: "EDIT  DIE DETAILS",
        width: 830,
        height: 500,
        buttons: {
            Close: function () {
                $(this).dialog('close');
            }
        },
        modal: true
    });
};