Dropdownlist set selected value

In this post we will see in jquery how toset dropdown list value or selected option by it's value. For that we simply need to get object of dropdown list in jquery and then we can set selected option by using val(). of dropdownlist.

jquery dropdownlist set selected value

Example: set dropdown list selected option by value [jQuery]

<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
    <script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
    <title>jQuery set dropdown list selected option by value</title>
    <script type="text/javascript">
      $(document).ready(function () {
        $("#go").click(function () {
          var inputText = $("#inputText").val();
          $("#numbers").val(inputText);
        });
      });
    </script>
</head>
<body>
    <form id="form1" runat="server">
    <div>
      <label>Enter value between 1-3</label>
      <input type="text" id="inputText"/>
    <asp:DropDownList ID="numbers" runat="server">
    <asp:ListItem Text="1" Value="1"></asp:ListItem>
    <asp:ListItem Text="2" Value="2"></asp:ListItem>
    <asp:ListItem Text="3" Value="3"></asp:ListItem>
    </asp:DropDownList>
    </div>
    <input type="button" id="go" value="Go" />
    </form>
</body>
</html>

Summary: So in short we can use jquery to set dropdownlist item value like $("#numbers").val(inputText);. we can also set dropdown list selected option by using text like Set selected value by text.

Assign value to span - jquery

In this post we will see set a value to span tag using JQuer. To change value of span we can access span tag directly like $('span') and then using its .html() method we can assign some text to it.

assign value to span jquery

Example to assign text to span [jQuery]

<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
     <script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
    <title>Assign value to span in jQuery</title>
    <script type="text/javascript">
      $(document).ready(function () {
        $("#submitbtn").click(function () {
          var inputValue = $("#inputText").val();
          $('span').html(inputValue);
        });
      });
    </script>
</head>
<body>
    <form id="form1" runat="server">
    <div>
       <label>Type some text here to assign to span</label>
        <input type="text" id="inputText"/>
        <input type="button" id="submitbtn" value="Submit" /><br/>
        <span style="width:500px;height:120px; background-color:thistle">&nbsp;</span>
    </div>
    </form>
</body>
</html>

Summary:So to replace span tag text we get the object of span tag like $('span') and using .html() we can change value of span.

Set selected option by text of dropdownlist


In this post we will see how to set selected option by text to dropdownlist. In web application we need to set dropdownlist value at client side. By using option property of dropdown list we will check if dropdown contains text that we want to set And after that using selected attribute we will set it true so that it will show the option selected that we have set using text.
set selected option in dropdownlist using jquery

Sample to set selected option by text to dropdownlist[jQuery]


<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
    <script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
    <title>Set dropdownlist selected option by text</title>
    <script type="text/javascript">
      $(document).ready(function () {
        $("#go").click(function () {
         var inputText = $("#inputText").val();
          $("#numbers option:contains(" + inputText + ")").attr('selected', 'selected'); 
        });
      });
    </script>
</head>
<body>
    <form id="form1" runat="server">
    <div>
      <label>Enter value between 1-3</label>
      <input type="text" id="inputText"/>
    <asp:DropDownList ID="numbers" runat="server">
    <asp:ListItem Text="1" Value="1"></asp:ListItem>
    <asp:ListItem Text="2" Value="2"></asp:ListItem>
    <asp:ListItem Text="3" Value="3"></asp:ListItem>
    </asp:DropDownList>
    </div>
    <input type="button" id="go" value="Go" />
    </form>
</body>
</html>


Summary:By using $("#numbers option:contains(" + inputText + ")").attr('selected', 'selected'); we have dynamically set the selected option of a drop-down list using JQuery.We can set selected option of dropdown list by it's value likeset selected option of dropdown box by value

Set value to textarea - jQuery

In this post we will see how to set value to textarea in jQuery. To assign value to textarea in jquery we can use .val() method of textarea. In example we will take value from input testbox and assign it to textarea.

set value to textarea in jquery

Example to set value to textarea [jQuery]

<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
    <script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
    <script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jqueryui/1.8.11/jquery-ui.min.js"></script>
    <script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jqueryui/1.8.11/i18n/jquery-ui-i18n.min.js"></script>
    <link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.7.1/themes/ui-lightness/jquery-ui.css" type="text/css" media="all" />
    <title>Set textarea value in jQuery</title>
    <script type="text/javascript">
      $(document).ready(function () {
        $("#submitbtn").click(function () {
          var inputVal = $("#inputText").val();
          $("#txtMessage").val(inputVal);
        });
      });
    </script>
</head>
<body>
    <form id="form1" runat="server">
    <div>
      <label>Type Text here</label>
        <input type="text" id="inputText" /><br/>
        <textarea cols="50" rows="5" id="txtMessage"></textarea><br/>
        <input type="button" id="submitbtn" value="Submit" />
    </div>
    </form>
</body>
</html>

Regex for email validation JavaScript

In this post we will see how to validate email format in Javascript using regular expression. We can use regular expression (/^([\w\.\-]+)@([\w\-]+)((\.(\w){2,3})+)$/i) to validate the email address in javascript.

Regular expression to validate email format in JavaScript

Example of email validation using regex in javascript

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
  <title>Regex to validate email format in JavaScript</title>
  <script language="javascript" type="text/javascript">
    function Validate() {
      var emailRegex = new RegExp(/^([\w\.\-]+)@([\w\-]+)((\.(\w){2,3})+)$/i);
      var emailAddress = document.getElementById("<%= txtemail.ClientID %>").value;
      var valid = emailRegex.test(emailAddress);
      if (!valid) {
        alert("Invalid e-mail address");
        return false;
      } else
        return true;
    }
  </script>
</head>
<body>
  <form id="form1" runat="server">
  <div>
    <asp:TextBox runat="server" ID="txtemail"></asp:TextBox>
    <asp:Button runat="server" ID="Send" OnClientClick="return Validate();" Text="Send" />
  </div>
  </form>
</body>
</html>

Validate email format - RegularExpressionValidator

In asp.net in order to validate email address format we can use RegularExpressionValidator. We will see how to use RegularExpressionValidator to validate the email address format.For that we need to specify the Regular expression or regex in ValidationExpression property of the RegularExpressionValidator. Also we need to specify few other properties like ErrorMessage to display error message when email address is invalid. also we need to specify ControlToValidate property where we have to give textbox controls name in which user enters email address.

Validate email address using regular expression validator

Example to validate email address using RegularExpressionValidator

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
  <title>Validate email format </title>
</head>
<body>
  <form id="form1" runat="server">
  <div>
    <asp:TextBox ID="txtEmail" runat="server" />
    <asp:Button ID="btnSubmit" runat="server" Text="Submit" OnClick="btnSubmit_Click" />
    <asp:RegularExpressionValidator ID="validateEmail" runat="server" ErrorMessage="Invalid email."
      ControlToValidate="txtEmail" ValidationExpression="^([\w\.\-]+)@([\w\-]+)((\.(\w){2,3})+)$" />
  </div>
  </form>
</body>


Also we need to check !Page.IsValid in event hadler of control like button or link...etc like
  protected void btnSubmit_Click(object sender, EventArgs e)
    {
      if (!Page.IsValid)
        return;
    }

Remove special characters - jQuery

In this post we will see how to remove special characters like !,@,$,*,^ ...etc. from the string. For that we need to specify the special characters in regular expressions. Then by passing specified regular expression to .replace method in jquery and replace it with '' blank.

remove special characters from string in jquery

Example to remove special characters from string - jquery

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
    <title>Remove special character fromstring</title>
    <script type="text/javascript">
        $(document).ready(function () {
            $("#Send").click(function () {
                var originalstring = $("#txtinput").val();
                var filteredString = originalstring.toLowerCase().replace( /[\*\^\'\!\@\$]/g , '');
                alert(filteredString);
            });
        });
    </script>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    <asp:TextBox runat="server" ID="txtinput"></asp:TextBox>
    <asp:Button runat="server" ID="Send" Text="Send" />
    </div>
    </form>
</body>
</html>


We can use regular expressions to define the special character set that we need to remove from string. so if you want to remove * from the string the regular expression will be /[\*]/g. Now if you want to remove ! also the add ! to regular expression like /[\*\!]/g and so on.

c# regex for email address

In c# while dealing with email we need to validate email address. In order to validate email address we just check whether the email address format is correct or not. In C# we can use System.Text.RegularExpressions namesapce to match the email address for validation. In Regular Expressions namespace we have Regex class and from which .Match() method can be used to match the email address with the regular express defined using Regex class.

c# regex for email address

C# code to validate email format.

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>C# validate email format regex</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:TextBox runat="server" ID="txtemail"></asp:TextBox>
        <asp:Button runat="server" ID="Send" OnClick="Send_Click" Text="Send" />
    </div>
    </form>
</body>
</html>

using System;
using System.Text.RegularExpressions;
public partial class Csharpregularexpressionemail : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {

        }
        protected void Send_Click(object sender, EventArgs e)
        {
            ValidateEmail();
        }
        private void ValidateEmail()
        {
            string email = txtemail.Text;
            Regex regex = new Regex(@"^([\w\.\-]+)@([\w\-]+)((\.(\w){2,3})+)$");
            Match match = regex.Match(email);
            if (match.Success)
                Response.Write(email + " is corrct");
            else
                Response.Write(email + " is incorrct");
        }
    }


In above example we have specified format for email regex using constructure call of Regex class. Then we have used .Match method to match the regular express pattern for email to match. And after that we have checked if match is successfull or not.

.parent() - Get the parent of element jQuery

Get the parent of element
In web applications while working with clientside we may need to get parent element of elected element. jQuery provides function .parent() that we can use to easily get parent of the element.

Here we will see example where we have link inside div and on clicking on link we will get it's parent div.

Code to get parent of element [jQuery]

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
     <script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
    <title>Get parent of element</title>
    <script type="text/javascript">
        $(document).ready(function () {
            $("#submitbtn").click(function () {
                var parent = $(this).parent();
                alert(parent.text());
            });
        });
    </script>
</head>
<body>
    <form id="form1" runat="server">
    <div style="border:1px blue solid; background-color:seashell; width:200px; height:100px;">
       This is parent
       <br/>
       <input type="button" id="submitbtn" value="Click Me"/>
    </div>
    </form>
</body>
</html>

Remove css style dynamically in jquery

remove css style dynamically in jquery
Here we will see how to remove css style of the element in jquery. In web applications we need to remove css style dynamically to give user friendly ui effects and for that we can use .removeClass() function in jquery. Here we will see example of div in which when user clicks on link it will change color of div by applying css style dynamically.

Example to remove css style dynamically

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
    <title>Remove css style dynamically</title>
    <script type="text/javascript">
        $(document).ready(function () {
            $("#clickme").click(function () {
                $("#dynamic-style").removeClass("myStyle");
            });
        });
    </script>
    <style type="text/css">
        .myStyle
        {
            width: 500px;
            height: 300px;
            background-color: wheat;
        }
    </style>
</head>
<body>
    <form id="form1" runat="server">
    <a href="#" id="clickme">Change</a>
    <div id="dynamic-style" class="myStyle">
        Click change to change color.
    </div>
    </form>
</body>
</html>

Add css style dynamically in jquery

add css style dynamically injquery

In this post we will see how to add css style to element in jquery. In web applications we need to add css style dynamically to give user friendly ui effects and for that we can use .addClass() function in jquery. Here we will see example of div in which when user clicks on link it will change color of div by applying css style dynamically.

Example to add css style dynamically

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
    <title>Add css style dynamically</title>
    <script type="text/javascript">
        $(document).ready(function () {
            $("#clickme").click(function () {
                $("#dynamic-style").addClass("newStyle");
            });
        });
    </script>
    <style type="text/css">
        .newStyle
        {
            width: 500px;
            height: 300px;
            background-color: wheat;
        }
    </style>
</head>
<body>
    <form id="form1" runat="server">
    <a href="#" id="clickme">Change</a>
    <div id="dynamic-style">
        Click change to change color.
    </div>
    </form>
</body>
</html>

Get html control value in code behind without runat = server

access html control value in codebehind without runat server
In asp.net application we need to access value of html control in code behind without runat="server". For that purpose we can use name property of control. And Request.Form we can get value to code behind.So if we have html text input and you want to pass value of html input to code behind set it name property like <input name="username" />  and access it using Rquest.Form["usename"] you will get value to code behind of control without runat="server".

Code to get html control value to code behind without runat server

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
  <script type="text/javascript">
      function SubmitForm() {
         var theform;
          if (window.navigator.appName.toUpperCase().indexOf("NETSCAPE") > -1) {
              theform = document.forms["form1"];
          }
          else {
              theform = document.forms.form1;
          }
          theform.__EVENTTARGET = "btn";   
          theform.__EVENTARGUMENT = "";
          theform.submit();
      }    
</script>  
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <input type="text" id="username" name="username" />
        <input type="button" id="btn" onclick="SubmitForm()"  value="GO"/>
    </div>
    </form>
</body>
</html>


Code behind to access html control value


using System;

namespace aspnetcontrol
{
    public partial class Getvaluewithoutrunatservercontrol : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            string value = Request.Form["username"];
            Response.Write(value);
        }
    }
}

Get gridview checkbox value jQuery

get gridview selected checkboxes in jquery
In asp.net gridview we show checkboxes to select rows. Some times we need to get checked checkboxes in jQuery to perform some client side operations. in jQuery we need to first get object of gridview and then need to find checked checkboxes inside gridview.

Example to get gridview checked checkboxes in jQuery

<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
  <script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
  <script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jqueryui/1.8.11/jquery-ui.min.js"></script>
  <script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jqueryui/1.8.11/i18n/jquery-ui-i18n.min.js"></script>
<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.7.1/themes/ui-lightness/jquery-ui.css" type="text/css"/>
    <title>Get checkboxes in gridview using jQuery</title>
    <script type="text/javascript">
        $(document).ready(function () {
            $("#submit").click(function () {
               var $checkedCheckBoxes = $('#<%=GridView1.ClientID %>').find("input:checkbox:checked");
            });
        });
      
    </script>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" BorderWidth="1px"
            CellPadding="3" BorderStyle="None" Font-Names="Arial">
            <FooterStyle></FooterStyle>
            <PagerStyle HorizontalAlign="Left"></PagerStyle>
            <HeaderStyle Font-Bold="True"></HeaderStyle>
            <Columns>
                <asp:TemplateField HeaderText="Select">
                   <ItemTemplate>
                        <asp:CheckBox ID="CheckBoxPurchase" runat="server" Enabled="true" />
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:BoundField HeaderText="Item No." DataField="ItemNo">
                    <ItemStyle HorizontalAlign="Center" VerticalAlign="Middle"></ItemStyle>
                </asp:BoundField>
                <asp:BoundField HeaderText="Item Name" DataField="ItemName">
                    <ItemStyle HorizontalAlign="Center" VerticalAlign="Middle"></ItemStyle>
                </asp:BoundField>
            </Columns>
        </asp:GridView>
        <input type="button" id="submit" value="Submit"/>
    </div>
    </form>
</body>
</html>

Jquery- Get hiddenfield value in user control

get value of dynamic hiddenfield
In this post we will see how to get value of dynamically loaded hiddenfield value in jQuery. This happens when we use user control in page. In such cases id of hiddenfield get changed and so hiddenfield is not accessible from javascript or jQuery. We can't access hiddenfield using class selector also because hidden field don't have class property. In this case we can use "ClientIDMode" property and set it to ClientIDMode="Static". When we set ClientIDMode="Static" it will not set dynamic id to hidden field. And now we can access it in regular way.

Code to get hiddenfield value in user control [jQuery]

You can set ClientIDMode property of hidden field in user control like:

<asp:HiddenField runat="server" ID="hiddenValue" ClientIDMode="Static" value="Some Value" />

And in jQuery you can access it as like:
   <script type="text/javascript">
        $(document).ready(function () {
            $("#submitbtn").click(function () {
                var hiddenValue = $("#hiddenValue").val();
                alert(hiddenValue);
            });
        });
    </script>

Summary: After setting ClientIDMode="Static" it will not assing dynamic id to hiddenfield and we can access hiddenfield as usual.

Get textarea value in jQuery

textarea value using jQuery

In web applications while using textarea control, we need to get the value of textarea at client side. In this post we will see example of how to get value of textarea in jQuery.

Example to get textarea value in jQuery

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<script src="development-bundle/jquery-1.7.1.js" type="text/javascript"></script>
<script src="js/jquery-1.7.1.min.js" type="text/javascript"></script>
<title>Get textarea value in jQuery</title>
<script type="text/javascript">
$(document).ready(function () {
$("#submitbtn").click(function () {
var textAreaValue = $("#txtMessage").text();
alert(textAreaValue);
});
});
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<textarea cols="50" rows="5" id="txtMessage"></textarea>
<input type="button" id="submitbtn" value="Submit" />
</div>
</form>
</body>
</html>

Assign dropdown value to other dropdown in jquery

set dropdown value to other dropdown in jquery
While woking with clientside stuff in asp.net we need to assign value of one dropdown to other dropdown. In this post we will see how to assign dropdown value to other dropdown.

Example to assign value from dropdown to other dropdown.

<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<script src="Scripts/jquery-1.4.1.js" type="text/javascript"></script>
<script src="Scripts/jquery-1.4.1.min.js" type="text/javascript"></script>
<title>Get dropdown value</title>
<script type="text/javascript">
$(document).ready(function () {
$("#topics").change(function () {
var text = $("#topics option:selected").text();
var value = $("#topics option:selected").val();
$("#topics1").val(value);
});
});
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:DropDownList ID="topics" runat="server">
<asp:ListItem Text="C#" Value="1"></asp:ListItem>
<asp:ListItem Text="jQuery" Value="2"></asp:ListItem>
<asp:ListItem Text="ASP.NET" Value="3"></asp:ListItem>
</asp:DropDownList>

<br/><br/>
<asp:DropDownList ID="topics1" runat="server">
<asp:ListItem Text="C#" Value="1"></asp:ListItem>
<asp:ListItem Text="jQuery" Value="2"></asp:ListItem>
<asp:ListItem Text="ASP.NET" Value="3"></asp:ListItem>
</asp:DropDownList>
</div>
</form>
</body>
</html>
Output

Image click event in jquery

Image click event in jQuery

In this post we are going to see how to get click event of image. This can be done by using either id jquery selector or css selector. We will see both the examples to get image click in jquery.

Image click event using id selector [jQuery]

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<script src="Scripts/jquery-1.4.1.js" type="text/javascript"></script>
<script src="Scripts/jquery-1.4.1.min.js" type="text/javascript"></script>
<title>Get Image click event</title>
<script type="text/javascript">
$(document).ready(function () {
$("#tulips").click(function () {
alert("Image click in jquery");
});
});
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<img src="Image/Tulips.jpg"  runat="server" id="tulips" alt="image click in jquery"/>
</div>
</form>
</body>
</html>

Image click event using css selector [jQuery]

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<script src="Scripts/jquery-1.4.1.js" type="text/javascript"></script>
<script src="Scripts/jquery-1.4.1.min.js" type="text/javascript"></script>
<title>Get Image click event</title>
<script type="text/javascript">
$(document).ready(function () {
$(".imagecss").click(function () {
alert("Image click in jquery");
});
});
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<img src="Image/Tulips.jpg"  runat="server" id="tulips" alt="image click in jquery" class="imagecss"/>
</div>
</form>
</body>
</html>

Convert Date to culture specific format

datetime culture
In C# we need to show date format as per culture.To convert datetime in culture specific format we need to use CultureInfo class in .ToString constructor with culture code like for US culture pass "en-US". We will see here few examples to format date as per culture.

Code to format date in US culture [C#]

using System;
 public class StringToDateTime
 {
   public static void Main()
   {
     var myDateTimeValue = "2012-01-16 15:02:26";
     DateTime myDateTime = DateTime.Parse(myDateTimeValue);
     var dateingddmmyy = myDateTime.ToString(new CultureInfo("en-US"));
     Console.Write(dateingddmmyy);
   }
 }

Code to convert date in sanskrit Indian culture [C#]

using System;
 public class StringToDateTime
 {
   public static void Main()
   {
     var myDateTimeValue = "2012-01-16 15:02:26";
     DateTime myDateTime = DateTime.Parse(myDateTimeValue);
     var dateingddmmyy = myDateTime.ToString(new CultureInfo("sa-IN"));
     Console.Write(dateingddmmyy);
   }
 }


Code to convert date in Swedish culture [C#]

using System;
 public class StringToDateTime
 {
   public static void Main()
   {
     var myDateTimeValue = "2012-01-16 15:02:26";
     DateTime myDateTime = DateTime.Parse(myDateTimeValue);
     var dateingddmmyy = myDateTime.ToString(new CultureInfo("sv-SE"));
     Console.Write(dateingddmmyy);
   }
 }

Convert date to ""dd/mm/yyyy" format C#

format datetime in dd/mm/yyyy

In c# we need to convert datetime in different formats.In this post we will see how to get datetime in "dd/mm/yyyy" format.To parse datetime in "dd/mm/yyyy" format we need to use string formatter "dd/mm/yyyy" in .ToString() constructor.

Code to get datetime in dd/mm/yyyy format [C#]

using System;
 public class StringToDateTime
 {
   public static void Main()
   {
     var myDateTimeValue = "2012-01-16 15:02:26";
     DateTime myDateTime = DateTime.Parse(myDateTimeValue);
     var dateingddmmyy = myDateTime.ToString("dd/mm/yyyy");
     Console.Write(dateingddmmyy);
   }
 }
 

Get dropdown selected item onchange in jQuery

get dropdown list selected item onchange in jquery
When using dropdown list in asp.net application, we need to get value of selected item on onchange event of dropdown. In this post we will see example of how to get value of selected item using onchange event of dropdown.

<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<script src="Scripts/jquery-1.4.1.js" type="text/javascript"></script>
<script src="Scripts/jquery-1.4.1.min.js" type="text/javascript"></script>
<title>Get dropdown value</title>
<script type="text/javascript">
$(document).ready(function () {
$("#topics").change (function () {
var text = $("#topics option:selected").text();
var value = $("#topics option:selected").val();
alert("Selected text=" + text + " Selected value= " + value);
});
});
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:DropDownList ID="topics" runat="server">
<asp:ListItem Text="C#" Value="1"></asp:ListItem>
<asp:ListItem Text="jQuery" Value="2"></asp:ListItem>
<asp:ListItem Text="ASP.NET" Value="3"></asp:ListItem>
</asp:DropDownList>
</div>
</form>
</body>
</html>
Output

Get dropdownlist selected value in jQuery

get dropdownlist selected value in jquery
In web application we need to get dropdown value at client side. We will see the example of how to get dropdown value in jQuery.

Code to get dropdown value in jQuery


<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"> type="text/javascript"> </script>
  <title>Get dropdown value</title>
  <script type="text/javascript">
    $(document).ready(function () {
      $("#go").click(function () {
        var text = $("#numbers option:selected").text();
        var value = $("#numbers option:selected").val();
        alert("Selected text=" + text + " Selected value= " + value);
      });
    });
  </script>
</head>
<body>
  <form id="form1" runat="server">
  <div>
    <asp:DropDownList ID="numbers" runat="server">
      <asp:ListItem Text="1" Value="1"></asp:ListItem>
      <asp:ListItem Text="2" Value="2"></asp:ListItem>
      <asp:ListItem Text="3" Value="3"></asp:ListItem>
    </asp:DropDownList>
  </div>
  <input type="button" id="go" value="Go" />
  </form>
</body>
</html>

Get radio button value in jQuery

Get radio button value in jquery
When using radio buttons in web application we need to get value of radio buttons at clientside. We can use jQuery to get radio button value in jQuery.

Code that shows how to get radio button value in jQuery

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<script src="Scripts/jquery-1.4.1.js" type="text/javascript"></script>
<script src="Scripts/jquery-1.4.1.min.js" type="text/javascript"></script>
<title>Get radio button value</title>
<script type="text/javascript">
$(document).ready(function () {
$("#submit").click(function () {
var number = $("input[@name=numbers]:checked").val();
alert(number);
});
});
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<input type="radio" name="numbers" value="0" checked="checked" style="display:none" /> 
<input type="radio" name="numbers" value="1" /> 
<input type="radio" name="numbers" value="2" /> 
<input type="radio" name="numbers" value="3" /> 
<input id="submit" type="button" value="Submit"/>
</div>
</form>
</body>
</html>
Output