Saturday, 13 April 2013

You can easily do date time conversion in ASP.Net. You can convert date time from one format to other format.

In real application when data comes from external sources at that time chances increase for date time conversion error because both sender and receiver of data has different local date format setting.

May be you want to display or store date time in different format. If you know that date format that come from outside and you need in different format at that time your task become easy.

Here is example for this.
In this, we have one date in string variable in "MM/dd/yyyy" format. Now we convert this date in "dd/MM/yyyy" format. We are using "TryParseExact" method to parse and create DateTime object from date string after that, we convert in our desire format using "ToString" method. You can convert in any date time format.

Saturday, 6 April 2013

Click Here to Download Autocomplete And Fancy Dropdown
Also Download From this Link : Download Autocomplete And Fancy Dropdown

There is a situation where you have a large amount of value in dropdown list and you want to make that dropdown user-friendly. You want auto search functionality in ASP.Net Dropdownlist control.

You want one textbox inside dropdown list and when user type something in that textbox dropdown list become searchable and it will display only those records which were matched within textbox without doing any postback.

We can do this using Javascript and JQuery. We are using one JQuery plug-in for that. Plug-in name is "Chosen".

Here is example for ASP.NET Autocomplete DropDown.

In this example we take ASP.Net dropdown control and fill countries name into that, after that when user click on that combobox by default dropdown list is open and on first position you can see the textbox when you type in textbox dropdown list control become search-able and this list if automatically filter.

You can also get selected value in server side code using "SelectedValue" property of comobox. In this example when user click on "GetSelected" button at that time server side button click event called and display selected value in label. You can see that in below output screens.

ASPX Code :
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="FnacyDropdownlist.aspx.cs" Inherits="FnacyDropdownlist" %>

<!DOCTYPE html>

<html xmlns="">
        a img{border: none;}
        ol li{list-style: decimal outside;}
        div#container{width: 780px;margin: 0 auto;padding: 1em 0;}
        div.side-by-side{width: 100%;margin-bottom: 1em;}
        div.side-by-side > div{float: left;width: 50%;}
        div.side-by-side > div > em{margin-bottom: 10px;display: block;}
        .clearfix:after{content: "\0020";display: block;height: 0;clear: both;overflow: hidden;visibility: hidden;}
    <link rel="stylesheet" href="Style/chosen.css" />
    <form runat="server" id="form1">
        <div id="container">
            <h2>Selected Value :
                <asp:Label runat="server" ID="lblSelectedValue" Style="color: red"></asp:Label></h2>
            <div class="side-by-side clearfix">


                    <asp:DropDownList data-placeholder="Choose a Country..." runat="server" ID="cboCountry" class="chzn-select" Style="width: 350px;">
                        <asp:ListItem Text="" Value=""></asp:ListItem>
                        <asp:ListItem Text="United States" Value="United States"></asp:ListItem>
                        <asp:ListItem Text="United Kingdom" Value="United Kingdom"></asp:ListItem>
                        <asp:ListItem Text="Albania" Value="Albania"></asp:ListItem>
                        <asp:ListItem Text="Algeria" Value="Algeria"></asp:ListItem>
                        <asp:ListItem Text="Angola" Value="Angola"></asp:ListItem>
                        <asp:ListItem Text="Bahamas" Value="Bahamas">Bahamas</asp:ListItem>
                        <asp:ListItem Text="Bahrain" Value="Bahrain"></asp:ListItem>
                        <asp:ListItem Text="Brazil" Value="Brazil"></asp:ListItem>
                        <asp:ListItem Text="Czech Republic" Value="Czech Republic"></asp:ListItem>
                        <asp:ListItem Text="Denmark" Value="Denmark"></asp:ListItem>
                        <asp:ListItem Text="Djibouti" Value="Djibouti"></asp:ListItem>
                        <asp:ListItem Text="Dominica" Value="Dominica"></asp:ListItem>
                        <asp:ListItem Text="Dominican Republic" Value="Dominican Republic"></asp:ListItem>

                    </asp:DropDownList><asp:Button runat="server" ID="btnSelect" Text="Get Selected" OnClick="btnSelect_Click" />


        <script src="Scripts/jquery.min.js" type="text/javascript"></script>
        <script src="Scripts/chosen.jquery.js" type="text/javascript"></script>
        <script type="text/javascript"> $(".chzn-select").chosen(); $(".chzn-select-deselect").chosen({ allow_single_deselect: true }); </script>

C#. Net Example :
    protected void btnSelect_Click(object sender, EventArgs e)
        lblSelectedValue.Text = cboCountry.SelectedValue;

Output (Default Screen) : 

Auto Search Functionality in ASP.Net Dropdownlist control
(To view original image , click on image)

Output (Auto search screen) : 

Auto Search Functionality in ASP.Net Dropdownlist control
(To view original image , click on image)

Output (Selected Value Screen) :  

Auto Search Functionality in ASP.Net Dropdownlist control
(To view original image , click on image)

You can download complete running source code from above link.

Note : There are other lots of functionality of this "Chosen" plug-in. We will post those functionality in next