All the other javascript functions I have found do not properly format the "$" into the parenthesis. Here is a formatnumber and a format currency function that will take care of everything for you:

function FormatCurrency(num, decimalNum, bolLeadingZero, bolParens) {
    num = FormatNumber(num, decimalNum, bolLeadingZero, bolParens);
   
    if (num.charAt(0) == "(") {
        num = num.replace("(", "($");
    }
    else {
        num = "$" + num
    }

    return num;
}
function FormatNumber(num, decimalNum, bolLeadingZero, bolParens)
/* IN - num:            the number to be formatted
decimalNum:     the number of decimals after the digit
bolLeadingZero: true / false to use leading zero
bolParens:      true / false to use parenthesis for - num

RETVAL - formatted number
*/
{
    var tmpNum = num;

    // Return the right number of decimal places
    tmpNum *= Math.pow(10, decimalNum);
    tmpNum = Math.floor(tmpNum);
    tmpNum /= Math.pow(10, decimalNum);

    var tmpStr = new String(tmpNum);

    // See if we need to hack off a leading zero or not
    if (!bolLeadingZero && num < 1 && num > -1 && num != 0)
        if (num > 0)
        tmpStr = tmpStr.substring(1, tmpStr.length);
    else
    // Take out the minus sign out (start at 2)
        tmpStr = "-" + tmpStr.substring(2, tmpStr.length);


    // See if we need to put parenthesis around the number
    if (bolParens && num < 0)
        tmpStr = "(" + tmpStr.substring(1, tmpStr.length) + ")";


    return tmpStr;
}
function addCommas(nStr) {
    nStr += '';
    x = nStr.split('.');
    x1 = x[0];
    x2 = x.length > 1 ? '.' + x[1] : '';
    var rgx = /(\d+)(\d{3})/;
    while (rgx.test(x1)) {
        x1 = x1.replace(rgx, '$1' + ',' + '$2');
    }
    return x1 + x2;
}
function StripNumber(number) {
    number = number.replace("(", "-");
    number = number.replace(")", "");
    number = number.replace(",", "");
    number = number.replace("$", "");
    return number;
}

When publishing a project using Telerik controls to IIS 7, you might run in to this error message:

~/Telerik.Web.UI.WebResource.axd' is missing in web.config. RadScriptManager requires a HttpHandler registration in web.config.

You'll need to modify the web config and move the handler from System.Web.HttpHandlers section:

<system.web>

<httpHandlers>

<add path="Telerik.Web.UI.WebResource.axd" verb="*" type="Telerik.Web.UI.WebResource, Telerik.Web.UI" validate="false" />

</httpHandlers>

<system.web>

To the system.webServer.handlers section:

<system.webServer>

        <handlers>

             <add name="Telerik_Web_UI_WebResource_axd" verb="*" preCondition="integratedMode" path="Telerik.Web.UI.WebResource.axd" type="Telerik.Web.UI.WebResource" />

        </handlers>

</system.webServer>

The easiest way to accomplishing this is to use the smart tag on the RadScriptManager and click on Register Telerik.Web.UI.WebResource.AXD. See below

This will generate the proper section in your local web.config. You can then either publish it to your server or modify the web.config by hand.

Hope this helps someone!

When trying to connect to an MDF in Visual studio you might get this error:

Navigate to that in the menu like Microsoft SQL Server 2008 > Configuration tools > SQL Server Configuration Manager. Take a look at figure 1:

Now right mouse click on the highlighted service and goto properties and you'll see the Log On dialogue. set the Log On As to "Local system" as follows:

That should do it! Worked on my machine :)

In Visual Studio when I tried to access a SQL MDF on a project a colleague sent me, I received the error "Cannot be opened because it is version 655. This server supports version 612 and earlier". This was due to the fact that I had SQL Express 2005 installed and the MDF was created in SQL Express 2008. The fix for this is simply to install SQL 2008 and tell visual studio to use the new instance name. This can be set through the options menu. Menu>Tools>Options>Database Tools>Database Connections. Hope this helps somebody!

To solve this recurring issue when trying to install VS 2010 premium from a downloaded ISO, I just used the web installer instead. I never did figure out what the issue was but the web installer succeeded first time. Now digging into the 4.0 framework. Hopefully there are some good nuggets in there...

When you try and aggregate a radgrid GridCalculatedColumn, you might encounter this error

Sum is not supported for type "System.Object"

to fix this error all you have to do is give the column a datatype - in my case it was  a decimal. the property setting for this is DataType="System.Decimal". See Example below:

<telerik:GridCalculatedColumn DataFields="SumOfNetRev,SumOfUESFee" DataType="System.Decimal"

                        FilterControlAltText="Filter NetTotal column" UniqueName="NetTotal"

                        DataFormatString="{0:c}"

                        Expression="{0}-{1}" HeaderText="Net Total" Aggregate="Sum" FooterAggregateFormatString="{0:c}">

                        <ItemStyle HorizontalAlign="right" />

                        <HeaderStyle HorizontalAlign="Right" />

                        <FooterStyle HorizontalAlign="Right" Font-Bold="true"/>

</telerik:GridCalculatedColumn>

use the FooterAggregateFormatString property and set it to something like: FooterAggregateFormatString="{0:c}"

<telerik:GridNumericColumn DataField="SumOfUESFee" DecimalDigits="2" 
                        FilterControlAltText="Filter column column" HeaderText="UES Fee" 
                        UniqueName="UESFee" DataFormatString="{0:c}" Aggregate="Sum" FooterAggregateFormatString="{0:c}">
                        <ItemStyle HorizontalAlign="right" />
                        <HeaderStyle HorizontalAlign="Right" />
                        <FooterStyle HorizontalAlign="Right"/>
                    </telerik:GridNumericColumn>