Validation of viewstate MAC failed problem

in Web Config 

<machineKey decryptionKey="A4B12CCDD50E95F8GB9GFH6JKAT4Y0U0I2OF2DF2AAFE5AB46189C,IsolateApps" validation="AES" validationKey="480CDF2AS9S9AS5CFDGF0GHFH9JJH4KHKAKLJ2L9F3SAS82A6C16911A29EF48903783F94529C21570AACB72766FB38CD4CE7B85B0ACE3149DC5FC1CCF1AA1CECE3579659996593B06,IsolateApps"/>

Or in aspx page 

<%@ Page Title="" Language="vb" AutoEventWireup="false" MasterPageFile="~/Admin/Site1.Master"  EnableViewStateMac="false" CodeBehind="MenuStructure.aspx.vb" Inherits="LogicTextile.MenuStructure" %>




Space between RadioButtonGroup in ASP.NET

in code behind :

            rbMode.Items(0).Attributes.CssStyle.Add("margin-right", "15px")
            rbMode.Items(1).Attributes.CssStyle.Add("margin-right", "15px")

SQL SERVER – Query to Find ByteSize of All the Tables in Database

SELECT CASE WHEN (GROUPING(sob.name)=1) THEN 'All_Tables'
   ELSE ISNULL(sob.name, 'unknown') END AS Table_name,
   SUM(sys.length) AS Byte_LengthFROM sysobjects sob, syscolumns sysWHERE sob.xtype='u' AND sys.id=sob.idGROUP BY sob.nameWITH CUBE

using radio in ASP.NET treeview instead of checkboxes

<script type="text/javascript">

    function MakeRadio() {

        var tv = document.getElementById("<%= TV.ClientID %>");

        var chkArray = tv.getElementsByTagName("input");

        for (i = 0; i <= chkArray.length - 1; i++) {

            if (chkArray[i].type == 'checkbox') {

                chkArray[i].type = 'radio';

            }

        }

    }

    window.onload = MakeRadio;

    function OnTreeClick(evt) {

        var src = window.event != window.undefined ? window.event.srcElement : evt.target;

        var isChkBoxClick = (src.tagName.toLowerCase() == "input" && src.type == "radio");

        if (isChkBoxClick) {

            SelectOne(src.id);

        }

    }

    function SelectOne(objId) {

        var tv = document.getElementById("<%= TV.ClientID %>");

        var chkArray = tv.getElementsByTagName("input");

        for (i = 0; i <= chkArray.length - 1; i++) {

            if (chkArray[i].type == 'radio') {

                if (chkArray[i].id != objId) {

                    chkArray[i].checked = false;

                }

            }

        }

    }

</script>

<asp:TreeView ID="TV" runat="server"></asp:TreeView>

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

                TV.Attributes.Add("onclick", "OnTreeClick(event)")

End Sub