Execute JavaScript from C# in update panel

Place the code before closing the update panel

<Triggers>         <asp:PostBackTrigger ControlID = "btnSave" />
 </Triggers>

so that it would recognize the control under where the javascript written from c#

JS Alert Message by C# Code

Normally:
public static void ShowMsgBox(string message)
        {           
            Page page = HttpContext.Current.CurrentHandler as Page;
            page.ClientScript.RegisterStartupScript(typeof(Page), "abc", "<script type='text/javascript'>alert('" + message + "');</script>");           
        }

        public static void ShowMsgBoxByPageHide(string message)
        {
            // Cleans the message to allow single quotation marks
            string cleanMessage = message.Replace("'", "\'");
            string script = "<script type='text/javascript'>alert('" + message + "');</script>";

            // Gets the executing web page
            Page page = HttpContext.Current.CurrentHandler as Page;

            // Checks if the handler is a Page and that the script isn't allready on the Page
            if (page != null && !page.ClientScript.IsClientScriptBlockRegistered("alert"))
            {
                page.ClientScript.RegisterClientScriptBlock(typeof(Page), "alert", script);
            }
        }

For in Update Panel:
public static void ShowMsgBoxInUpdatePanel(string message)
        {
            // Cleans the message to allow single quotation marks
            string cleanMessage = message.Replace("'", "");
            string alertScript = "javascript: alert('" + cleanMessage + "')";
            Page page = HttpContext.Current.CurrentHandler as Page;
            ScriptManager.RegisterStartupScript(page, page.GetType(), "alertScript", alertScript, true);
        }

Allowing only Numeric in web TextBox using JS

<script type = "text/javascript">
        function isNumberKey(evt) {
            var charCode = (evt.which) ? evt.which : event.keyCode
            if (charCode > 31 && charCode != 46 && (charCode < 48 || charCode > 57))
                return false;
            return true;
        }
</script>


Call the isNumberKey(event) function on keypress event of the textbox like this:
<asp:TextBox id="txtQty"  runat="server" onkeypress="return isNumberKey(event);"/>

Directly print any div of web page using JavaScript & HTML

Sample Div that is to print:

<div id="divPrint">

  <br />

<asp:Label ID="lblDetails" runat="server" Font-Bold="True" Font- Size="Medium">

</asp:Label>

  <br />                                   

      <asp:GridView ID="gvSample" runat="server">

      </asp:GridView>

</div>

JavaScript Code:

<script type="text/javascript">

        function CallPrint(strid) {

            var prtContent = document.getElementById(strid);

            var width = 600;

            var height = 500;

            var left = (screen.width - width) / 2;

            var top = (screen.height - height) / 2;

            var WinPrint = window.open('', '', 'letf=' + left + ',top=' + top + ',width=' + width + ',height=' + height + ',toolbar=0,scrollbars=0,status=0');

            WinPrint.document.write(prtContent.innerHTML);

            WinPrint.document.close();

            WinPrint.focus();

            WinPrint.print();

            WinPrint.close();

        }

</script>

Print Button:

<input type="button" value="Print" id="btnPrint" runat="Server" onclick="javascript:CallPrint('divPrint')" />

Pivoting Query

 Actual Table:
Year               Quarter            Amount

1990	1	1.1
1990	2	1.2
1990	3	1.3
1990	4	1.4
1991	1	2.1
1991	2	2.2
1991	3	2.3
1991	4	2.4
1992	4	2.4

Desired Output: 
(Here Q for Quarter)
Year       Q-1       Q-2      Q-3       Q-4
1990        1.1        1.2        1.3        1.4
1991        2.1        2.2        2.3        2.4
1992        0.0        0.0        0.0        2.4
Query:
Use Northwind
GO
CREATE TABLE Pivot
( Year      SMALLINT,
  Quarter   TINYINT,
  Amount      DECIMAL(2,1) )
GO
INSERT INTO Pivot VALUES (1990, 1, 1.1)
INSERT INTO Pivot VALUES (1990, 2, 1.2)
INSERT INTO Pivot VALUES (1990, 3, 1.3)
INSERT INTO Pivot VALUES (1990, 4, 1.4)
INSERT INTO Pivot VALUES (1991, 1, 2.1)
INSERT INTO Pivot VALUES (1991, 2, 2.2)
INSERT INTO Pivot VALUES (1991, 3, 2.3)
INSERT INTO Pivot VALUES (1991, 4, 2.4)
INSERT INTO Pivot VALUES (1992, 4, 2.4)
GO
SELECT * FROM Pivot
GO
SELECT Year,
    SUM(CASE Quarter WHEN 1 THEN Amount ELSE 0 END) AS Q1,
    SUM(CASE Quarter WHEN 2 THEN Amount ELSE 0 END) AS Q2,
    SUM(CASE Quarter WHEN 3 THEN Amount ELSE 0 END) AS Q3,
    SUM(CASE Quarter WHEN 4 THEN Amount ELSE 0 END) AS Q4
FROM Northwind.dbo.Pivot
GROUP BY Year
GO
Another Output:
SELECT P1.*, (P1.Q1 + P1.Q2 + P1.Q3 + P1.Q4) AS YearTotal
FROM (SELECT Year,
             SUM(CASE P.Quarter WHEN 1 THEN P.Amount ELSE 0 END) AS Q1,
             SUM(CASE P.Quarter WHEN 2 THEN P.Amount ELSE 0 END) AS Q2,
             SUM(CASE P.Quarter WHEN 3 THEN P.Amount ELSE 0 END) AS Q3,
             SUM(CASE P.Quarter WHEN 4 THEN P.Amount ELSE 0 END) AS Q4
     FROM Pivot AS P
     GROUP BY P.Year) AS P1
GO