Callback Functions Execution in jQuery

Callback functions are function which can be invoked under certain conditions. These functions executes after current effect have been finished. As the effect completed, the function reference specified as callback will be executed.

JQuery statements are executed line after line in a sequence and perform action written. In case of effects discussed earlier, next line (whatever you write) will be execute before the effect completes its part. If the next line depends on the effect then it can create errors.

Callback function reference will execute after the current effect finished completely. These functions can easily remove those errors, here is the syntax:

$(selector).show(speed, callback);

Following example will show an alert after div is shown on the button click:

$("#btnShow").click(function(){
$("#divToShow").show("slow", function(){
        alert("Div has been shown");
        });
});

In the above code a callback function have been written that will show an alert message after div will show. If we don’t write any callback function then it will show an alert message without showing the div properly.

$("#btnShow").click(function(){
$("#divToShow").show(2000);
        alert("Div has been shown");
});

This code will not wait for div to show and show an alert message specified. So these type of situations must have callback functions.

SiteMapPath not visible in visual studio 2013

When i run the SiteMapPath in visual studio 2010 then i found that it run successfully. When i run same sitemap file in visual studio 2013 then didn't run. I found the Error, that error is:

.aspx extension

Because visual studio 2013 support hide extension functionally or you can say it provide friendly url to the users. Like

http://localhost:25367/marketus

Here, marketus is the page name, not a directory. So problem structure is:

Now the solution is, remove .aspx extension of the url attribute from the web.sitemap file. Now you can see after removing the extension.

 Now the output page of the file is:

Create an Object using New Operator: Java

New operator is used to create a new object of an existing class and associate the object with a variable that names it. Basically new operator instantiates a class by allocating memory for a new object and returning reference to that memory.

Every class needs an object to use its member and methods by other classes. Programmer have to create that object using new operator to use functionality provided by that class. Following is the syntax to create new object of an existing class:

Class_variable =new Class_Name();

This syntax basically describes some points about new operator as below:

• Allocates memory to class_variable for new object of class.
• It invokes object constructor.
• Requires only single postfix argument which calls to constructor.
• Returns reference to memory which is usually assigned to variable of appropriate type.

Following statement will create an object of city class and allocate memory to this newly created object:

City metro;

metro = new City();

The equivalent code for the above statement that can be written in single line is:

City metro = new City();

So new operator does two things overall i.e. it first allocates memory somewhere to hold an instance of the type, and then calls a constructor to initialize an instance of the type in that newly allocated memory.

After creating new object for a class, that object can use all the members and methods defined in that class. You can assign all the properties for that class and operate available or new functions on those properties.

TextMode property of TextBox in ASP.NET

In visual studio 2010 you can assign only three values to the TextMode property , Those values are SingleLine , MultiLine and Password. But in visual studio 2012 you can set lots of value to the TextMode property Those values are SingleLine , MultiLine, Password, Email,Date , DateTime,URl etc All values are given below diagram.

Now all values we are using one by one :

MultiLine : In MultiLine TextBox you can take multiple rows but in single line TextBox you can take only single row. MultiLine TextBox is used where you need multiple rows like address of person. 

Lets take an example of MultiLine TextBox . Drag one TextBox control to the design window and set MultiLine to TextMode property.

<%@ Page Language="C#" %>

<!DOCTYPE html>

<script runat="server">

</script>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
 
    </div>
        <asp:TextBox ID="TextBox1" runat="server" TextMode="MultiLine" Width="213px"></asp:TextBox>
        <br />
        <asp:Button ID="Button1" runat="server" Text="Button" />
    </form>
</body>
</html>

Output

SingleLine TextBox : In SingleLine TextBox You can take only single row means your TextBox does not support enter key. Lets take an example of SingleLine TextBox.

<%@ Page Language="C#" %>

<!DOCTYPE html>

<script runat="server">

</script>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
 
    </div>
        <asp:TextBox ID="TextBox1" runat="server" Width="213px"></asp:TextBox>
        <br />
        <asp:Button ID="Button1" runat="server" Text="Button" />
    </form>
</body>
</html>

Password TextBox : In password TextBox your input character will change in circular filled disc or circle.

normally password TextBox is used where you need security. Lets take an example 

<%@ Page Language="C#" %>

<!DOCTYPE html>

<script runat="server">

</script>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
 
    </div>
        <asp:TextBox ID="TextBox1" runat="server" TextMode="Password" Width="213px"></asp:TextBox>
        <br />
        <asp:Button ID="Button1" runat="server" Text="Button" />
    </form>
</body>
</html>

Output

Email TextBox : You can set TextMode property is email in visual studio 2012.  HTML5 gives a new functionality to the web page such as email validation . you don't required expression validator for email validation . lets take an example of email validation feature in HTML5 .

<%@ Page Language="C#" %>

<!DOCTYPE html>

<script runat="server">

</script>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
 
    </div>
        <asp:TextBox ID="TextBox1" runat="server" TextMode="Email" Width="213px"></asp:TextBox>
        <br />
        <asp:Button ID="Button1" runat="server" Text="Button" />
    </form>
</body>
</html>

Output

Url : TextMode property is set to url then you will assign url to the TextBox. Its also a validator ,

line of code

<asp:TextBox ID="TextBox1" runat="server" TextMode="Url" Width="213px"></asp:TextBox>

Output

SiteMap Path example in ASP.NET

Using the SiteMap Path class you can navigate a website. It displays a set of Text or images Hyperlinks. Inheritance hierarchy of SiteMapPath class are:
System.Object
    System.Web.UI.Control
      System.Web.UI.WebControls.WebControl
         System.Web.UI.WebControls.CompositeControl
            System.Web.UI.WebControls.SiteMapPath

Lets take an simple example of SiteMap Path 

To create Web.Sitemap, right click the website name. A context menu appears. Select the Add New Item option from the context menu. The Add New Item dialog box appear. Select Site Map from the option available. This will create a new web.sitemap file in the website.

 The Web.sitemap file consists of navigational details for an application. You can set the title, URL, and other information for each page by using the Web.sitemap file. code, copy and paste into your sitemap file.

Article : How to use Menu Control in ASP.NET

Video : A simple video contain how to use menu and sitemap file

  <?xml version="1.0" encoding="utf-8" ?>
<siteMap xmlns="http://schemas.microsoft.com/AspNet/SiteMap-File-1.0" >
    <siteMapNode url="~/Default.aspx" title="Home Page"  description="">
        <siteMapNode url="~/About.aspx" title="About"  description="" />
        <siteMapNode url="~/contact.aspx" title="contact us"  description="" />
    </siteMapNode>
</siteMap>


After that Add a master page and three web form(Default.aspx, About.aspx, contact.aspx)  into the website folder. Here we take ASP.NET website , which is contain default asp.net template. After Completed your sitemap file you can add sitemap path control to the master page.

Note : Add SiteMap Path control into the master page after navigation control

Master page source code , where your sitemap path control exists

<%@ Master Language="C#" AutoEventWireup="true" CodeFile="Site.master.cs" Inherits="SiteMaster" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head runat="server">
    <title></title>
    <link href="~/Styles/Site.css" rel="stylesheet" type="text/css" />
    <asp:ContentPlaceHolder ID="HeadContent" runat="server">
    </asp:ContentPlaceHolder>
</head>
<body>
    <form runat="server">
    <div class="page">
        <div class="header">
            <div class="title">
                <h1>
                    My ASP.NET Application
                </h1>
            </div>
            <div class="loginDisplay">
                <asp:LoginView ID="HeadLoginView" runat="server" EnableViewState="false">
                    <AnonymousTemplate>
                        [ <a href="~/Account/Login.aspx" ID="HeadLoginStatus" runat="server">Log In</a> ]
                    </AnonymousTemplate>
                    <LoggedInTemplate>
                        Welcome <span class="bold"><asp:LoginName ID="HeadLoginName" runat="server" /></span>!
                        [ <asp:LoginStatus ID="HeadLoginStatus" runat="server" LogoutAction="Redirect" LogoutText="Log Out" LogoutPageUrl="~/"/> ]
                    </LoggedInTemplate>
                </asp:LoginView>
            </div>
            <div class="clear hideSkiplink">
                <asp:Menu ID="NavigationMenu" runat="server" CssClass="menu" EnableViewState="false" IncludeStyleBlock="false" Orientation="Horizontal">
                    <Items>
                        <asp:MenuItem NavigateUrl="~/Default.aspx" Text="Home"/>
                        <asp:MenuItem NavigateUrl="~/About.aspx" Text="About"/>
                    </Items>
                </asp:Menu>
            </div>
        </div>
        <div class="main">
            <asp:SiteMapPath ID="SiteMapPath2" runat="server">
            </asp:SiteMapPath>
            <br />
            <asp:ContentPlaceHolder ID="MainContent" runat="server"/>
        </div>
        <div class="clear">
        </div>
    </div>
    <div class="footer">
        
    </div>
    </form>
</body>
</html>

Code Generate the following output

Program to find sum of even and odd numbers (using one for loop) in C

Instead of using two for loops as in the previous program, only one for loop can be used. Let us see how this can be achieved.

sum= 0;
/* To add all numbers */
for(i=1; i<=n; i++)
{
sum = sum+i;
}

It is easy to say that we are computing the sum of all the numbers from 1 to n. To add only even numbers or to add numbers, the code can be changed as shown below:

esum=0;                          /* To store sum of even numbers */
osum = 0;                        /* To store sum of odd numbers */

/* To generate the integer from 1 to n */

for(i=1; i<=n; i++)
{
if(i % 2 == 0)                     /* If even */
esum = esum + i;               /* Add to even sum */
else
osum = osum + i;

}

Thus, after the control comes out of the for-loop, the variable esum contains the sum of even numbers and the variable osum contains the sum of odd numbers. The result can be printed using the following statements:

printf("Sum of even numbers = %d\n",esum);
printf("Sum of odd numbers = %d\n", osum);

The complete program is shown below:

Example : Program to add even numbers and odd numbers.
Program
#include<stdio.h>
main( )
{
int n, i, esum, osum;
printf("Enter the value of n:\n");
scanf("%d",&n);
/* Generate and print number from 1 to n */
printf("Integer from 1 to %d are \n",n);
for(i=1; i<=n;i++)
printf("%d",i);
printf("\n");
esum=0;
osum=0;

/* find sum of even and odd numbers */
for ( i=1; i<=n; i++)
{
if((i %2) == 0)
esum +=i;     /* Add even numbers */
else
osum += i;    /* Add odd numbers */

}
printf(" Sum of even numbers = %d\n",esum);
printf("Sum of odd numbers = %d\n",osum);
}

TRACING

Execution starts from here

Non-executable statement
Input
Enter the value of n:
6
Output 1
Integer from 1 to 6
1 2 3 4 5 6

Computations
e_sum = 0
o_sum = 0

i=1 2 3 4 5 6
e_sum = 0+2+4+6
                         = 12
o_sum= 0+1+3+5
                         = 9
Output 2

Sum of even numbers =12
Sum of odd numbers = 9

How to insert data into multiple table in ASP.NET

I have two table, such as complaint table and status table. Now, i want to add data in both table through same SqlCommand class instance. Now, first to prepare the Connection using SqlConnection class, after that design the query for first table after inserting the data, we can add data into other table.

You can check the complete.

Source Code

<table style="width:100%;">
    <tr>
        <td class="style3">
            Complaint against To</td>
    </tr>
    <tr>
        <td class="style1">
            Name :&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
            <asp:TextBox ID="pname" runat="server" Height="24px" Width="245px" 
                ValidationGroup="cr"></asp:TextBox>
            <asp:RequiredFieldValidator ID="RequiredFieldValidator7" runat="server" 
                ControlToValidate="pname" ErrorMessage="Consumer Name Required" ForeColor="Red" 
                ValidationGroup="cr">*</asp:RequiredFieldValidator>
        </td>
    </tr>
    <tr>
        <td class="style1">
            Business&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
            <asp:TextBox ID="pbusiness" runat="server" Height="24px" Width="245px" 
                ValidationGroup="cr"></asp:TextBox>
            <asp:RequiredFieldValidator ID="RequiredFieldValidator8" runat="server" 
                ControlToValidate="pbusiness" ErrorMessage="Consumer Name Required" ForeColor="Red" 
                ValidationGroup="cr">*</asp:RequiredFieldValidator>
        </td>
    </tr>
    <tr>
        <td class="style1">
            Address&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
            <asp:TextBox ID="padd" runat="server" Height="61px" Width="248px" 
                TextMode="MultiLine" ValidationGroup="cr"></asp:TextBox>
            <asp:RequiredFieldValidator ID="RequiredFieldValidator9" runat="server" 
                ControlToValidate="padd" ErrorMessage="Consumer Name Required" ForeColor="Red" 
                ValidationGroup="cr">*</asp:RequiredFieldValidator>
        </td>
    </tr>
    <tr>
        <td class="style1">
            Phone Number&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
            <asp:TextBox ID="pnumber" runat="server" Height="24px" Width="245px" 
                ValidationGroup="cr"></asp:TextBox>
            <asp:RequiredFieldValidator ID="RequiredFieldValidator10" runat="server" 
                ControlToValidate="pnumber" ErrorMessage="Consumer Name Required" ForeColor="Red" 
                ValidationGroup="cr">*</asp:RequiredFieldValidator>
        </td>
    </tr>
    <tr>
        <td class="style1">
            Faulty Proff&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
            <asp:TextBox ID="pfproff" runat="server" Height="24px" Width="245px" 
                ValidationGroup="cr"></asp:TextBox>
            <asp:RequiredFieldValidator ID="RequiredFieldValidator11" runat="server" 
                ControlToValidate="pfproff" ErrorMessage="Consumer Name Required" ForeColor="Red" 
                ValidationGroup="cr">*</asp:RequiredFieldValidator>
        </td>
    </tr>
    <tr>
        <td class="style1">
            Faulty Proff Image&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
            <asp:FileUpload ID="pproffimage" runat="server" />
        </td>
    </tr>
    <tr>
        <td class="style1">
            Review Against&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
            <asp:TextBox ID="preview" runat="server" Height="55px" Width="248px" 
                TextMode="MultiLine" ValidationGroup="cr"></asp:TextBox>
            <asp:RequiredFieldValidator ID="RequiredFieldValidator12" runat="server" 
                ControlToValidate="preview" ErrorMessage="Consumer Name Required" ForeColor="Red" 
                ValidationGroup="cr">*</asp:RequiredFieldValidator>
        </td>
    </tr>
    <tr>
        <td class="style1">
            Fir Number (if any)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
            <asp:TextBox ID="pfir" runat="server" Height="24px" Width="245px" 
                ValidationGroup="cr"></asp:TextBox>
            <asp:RequiredFieldValidator ID="RequiredFieldValidator13" runat="server" 
                ControlToValidate="pfir" ErrorMessage="Consumer Name Required" ForeColor="Red" 
                ValidationGroup="cr">*</asp:RequiredFieldValidator>
        </td>
    </tr>
</table>
<p>
    <asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="Submit" />
</p>
<p>
    <asp:Label ID="Label1" runat="server"></asp:Label>
</p>

<asp:ValidationSummary ID="ValidationSummary1" runat="server" ForeColor="Red" 
    ValidationGroup="cr" />

Design View Of Source code

Complete Business Logic Code

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Data.SqlClient;

using System.Configuration;

public partial class UserControl_complaint : System.Web.UI.UserControl

{

    string savefile = string.Empty;

    protected void Page_Load(object sender, EventArgs e)

    {

    }

    protected void Button1_Click(object sender, EventArgs e)

    {

        string un=System.Guid.NewGuid ().ToString ();

        if (pproffimage.HasFile)

        {

            pproffimage.SaveAs(Server.MapPath("~/images/" + pproffimage.FileName));

            savefile = "~/images/" + pproffimage.FileName;

        }

        SqlConnection con = new SqlConnection();

        con.ConnectionString = ConfigurationManager.ConnectionStrings["ConnectionString"].ToString();

        con.Open();

        SqlCommand cmd = new SqlCommand();

        cmd.CommandText = "insert into complaint(Party_Name,Business,Address,Faulty_proff,Image,Review,Fir_Numer,Consumer_Id,date,uniquet) values(@cuoname,@cuofname,@cuodob,@cuoadd,@cuoimage,@cuophone,@cuoemail,@cuoph,@cuodate,@cuoun)";

        cmd.Connection = con;

        cmd.Parameters.AddWithValue("@cuoname",pname.Text);

        cmd.Parameters.AddWithValue("@cuofname",pbusiness.Text);

        cmd.Parameters.AddWithValue("@cuodob", padd.Text);

        cmd.Parameters.AddWithValue("@cuoadd",pfproff .Text);

        cmd.Parameters.AddWithValue("@cuoimage", savefile);

        cmd.Parameters.AddWithValue("@cuophone",preview.Text);

        cmd.Parameters.AddWithValue("@cuoemail", pfir .Text);

        cmd.Parameters.AddWithValue("@cuoph",Session["cons_id"].ToString());

        cmd.Parameters.AddWithValue("@cuodate", DateTime.Now.ToString ());

         cmd.Parameters.AddWithValue("@cuoun", un);

        int a = cmd.ExecuteNonQuery();

        if (a > 0)

        {

            Label1.Text = "Data Inserted Sucessfully";

            Label1.ForeColor = System.Drawing.Color.Green;

        }

        cmd.Parameters.Clear();

        cmd.CommandText = "insert into status(status,Complaint_Id,consumer_id) values(@stname,@comid,@cunsid)";

        cmd.Parameters.AddWithValue("@stname", "pending");

        cmd.Parameters.AddWithValue("@comid",un);

        cmd.Parameters.AddWithValue("@cunsid", Session["cons_id"].ToString());

        cmd.ExecuteNonQuery();

    }

}