devexpress ASPxMemo set Maxlength

function SetMaxLength(memo, maxLength) {

            if (!memo)

                return;

            if (typeof (maxLength) != "undefined" && maxLength >= 0) {

                memo.maxLength = maxLength;

                memo.maxLengthTimerToken = window.setInterval(function () {

                    var text = memo.GetText();

                    if (text && text.length > memo.maxLength)

                        memo.SetText(text.substr(0, memo.maxLength));

                }, 10);

            } else if (memo.maxLengthTimerToken) {

                window.clearInterval(memo.maxLengthTimerToken);

                delete memo.maxLengthTimerToken;

                delete memo.maxLength;

            }

        }

<dx:ASPxMemo Height="80px" CssClass="devxLargeinput midwidtn" ID="txtEnterpriseDo" AutoResizeWithContainer="true" CssPostfix="ConnectToGrow" CssFilePath="~/css/devxpresscustom.css" Width="100%" runat="server">

                    <ClientSideEvents Init="function(s,e){SetMaxLength(s, 500)}" />

                </dx:ASPxMemo>

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