SelectBox "script block" error

Hello,
I am encountering an error in the Visual Studio IDE in a "script block" that looks like it is generated by Ext.Net. I have no idea where it gets loaded as i cannot find any of the source on disk. The script block is shown below and is shown in a "script block" container in the Visual Studio IDE tree view in Solution Explorer. This code errors out at

Code:

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            this.lastSelectedIndex = this.getStore().indexOf(records[0]) + 1;

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as there is no

Quote:

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records

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variable available. I have also attached a screen shot for clarity. What is the best way around this error?

Code:

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Ext.define('Ext.ux.SelectBox', {
    extend: "Ext.form.field.ComboBox",
    alias: "widget.selectbox",

    constructor: function (config) {
        this.searchResetDelay = 1000;
        config = Ext.merge(config || {}, {
            editable: false,
            forceSelection: true,
            rowHeight: false,
            lastSearchTerm: "",
            triggerAction: "all",
            queryMode: "local",
            listConfig: {
                navigationModel: "boundlistselectbox",
                listeners: {
                    refresh: {
                        fn: this.calcRowsPerPage,
                        scope: this,
                        delay: 100
                    },
                    afterRender: function () {
                        this.listEl.unselectable();
                    },
                    itemmouseenter: {
                        fn: function (view, record, node, index) {
                            this.lastSelectedIndex = index + 1;
                            this.cshTask.delay(this.searchResetDelay);
                        },
                        scope: this
                    }
                }
            }
        });

        this.callParent([config]);
        this.lastSelectedIndex = this.selectedIndex || 0;
        this.on("select", function (combo, records) {
            this.lastSelectedIndex = this.getStore().indexOf(records[0]) + 1;
        });

        if (Ext.isChrome) {
            this.on("expand", function () { this.focus(); }); // for some reason, it doesn't happen automatically in Chrome
        }
    }

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I am assuming it is being dynamically loaded by the Ext.net dll and it is defining the SelectBox. How can i avoid this error?

Its ok, i created my own selectbox and it works fine now...the selectbox code in the Ext.Net dll should read

Code:

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  this.on( "select", function ( combo, records )
            {
                if ( records )
                {
                    this.lastSelectedIndex = this.getStore().indexOf( records[0] ) + 1;
                }
            } );

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instead of the existing code which is

Code:

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  this.on( "select", function ( combo, records )
            {
                this.lastSelectedIndex = this.getStore().indexOf( records[0] ) + 1;
            } );

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Thanks for the update. We will look into adding this records check to the SelectBox.