DotNet Stadium: July 2012

Thursday 26 July 2012

How to solve google appengine error - Another transaction by user already in progress for app

The following error occurs in google app engine

Another transaction by user already in progress for app

In this post i'm going to explain how to solve the app engine error

step1:

open command prompt

step2:

navigate to C:\Program Files\Google\google_appengine

step3:

enter the following command

appcfg.py rollback C:\Users\subash\Desktop\vs

note(appcfg.py python file inside C:\Program Files\Google\google_appengine

C:\Users\subash\Desktop\vs -- your project directory)

Monday 16 July 2012

Dynamic Google Chart Updation

<html>
  <head>
    <script type="text/javascript" src="https://www.google.com/jsapi"></script>
    <script type="text/javascript">
      

      google.load("visualization", "1", {packages:["corechart"]});
      google.setOnLoadCallback(drawChart);
      function drawChart() {

        var x=Math.ceil(100*Math.random());
        var y=Math.ceil(100*Math.random());
        var z=Math.ceil(100*Math.random());
        var a=Math.ceil(100*Math.random());

        var data = google.visualization.arrayToDataTable([
          ['Year', 'Sales'],
          ['2004',  x],
          ['2005',  y],
          ['2006',  z],
          ['2007',  a]
        ]);

        var options = {
          title: 'Company Performance'
        };

        var chart = new google.visualization.LineChart(document.getElementById('chart_div'));
        chart.draw(data, options);
      }
      function interval()
      {
          setInterval(function (){draw()},3000);
      }
      
      function draw()
      {
        
        drawChart();
      }
    </script>
  </head>
  <body onload="interval()">
    <div id="chart_div" style="width: 400px; height: 200px;"></div>
  </body>
</html>

Passing Variables To Javascript From ASP.net Code Behind

The Code Behind Page is as Follows

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;



namespace script
{
    public partial class _Default : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            string name = "bose";

 Page.ClientScript.RegisterClientScriptBlock(typeof(Page),
                    "snipet1","<script type='text/javascript'> 
                     var y='"+name+"'</script>"); 
       }
    }
}

The ASPX page code is as follows

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="script._Default" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
    <script type="text/javascript">
        function al()
        {

            alert(y);

        }
    </script>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:Button OnClientClick="al()" ID="Button1"
                runat="server" Text="Button" />
    </div>
    </form>
</body>
</html>