Simple Application Form in ASP.NET

Introduction

We always face online registration form, application form, feedback form, query form and even if we want to create new email id we must face form to feed our information or else. But for the beginners of ASP.Net, it is very complex task to accomplish. Because when I was beginner in the same, I faced lots of problem like database configuration settings on local host and even on shared host. But in this article I will explain the simplest way to get connected with MS SQL Server Database, and also to fetch all information on web form. In different books, web articles there are couples of way discussed to accomplish but here is the simplest one.

Perquisites

There is something listed which I expect from you

1. You should know, how to open and create simple web pages and tables
2. You should know, how to create MS SQL Server Databases
3. You should have Visual Studio 2005/2008 or Visual Web Developer 2005/2008 installed and running ok.

Steps to Create Form

Step 1: Create a web page and place the controls as listed below:

Control Name	Property 1	Property 2	Property 3
TextBox1	Id =fname
TextBox2	Id =lname
TextBox3	Id =dob
TextBox4	Id =gender
TextBox5	Id =fathername
TextBox6	Id =contact
TextBox7	Id =address
Button1	Id =submit	Text=Submit
Label1	Id =conform	Text= Submitted, thank you !	Visible=False

Step 2:

In this step we will create the database in MS SQL Server as per the information given below:

Database Name = onlineapplicationform.mdf

Table Name = onlineapplication

Columns Name	Data Types	Allow Nulls	Property 3
id	int	Not Checked
fname	varchar(50)	Checked
lname	varchar(50)	Checked
dob	varchar(50)	Checked
gender	char(10)	Checked
fathername	varchar(50)	Checked
contact	int	Checked	only 6 digits
address	varchar(100)	Checked

Step 3:

In this step we will discuss, how to show that data available in database on web form. For this, we simply drag the table named 'onlineapplication' from Database Explorer and drop it on the web form. Now it will automatically establish the connect strings in web.config file. But we don't have any data in database to show it on form so simply it will show you 'There are no data records to display' message on the form. Now take a step to code behind to connect it to database and then after we can insert our data in table and view it on form that what we have given. Here is the screenshots of working process.

Step 4:

In this step we will discuss about the coding.

In Default.aspx Page

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="Default2" %>

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

<title>Simple Application Form in ASP.Net</title>

</head>

<body>

<div>

<strong><span style="font-size: 14pt; color: #0000ff">Simple Application Form In ASP.Net</span></strong><br />

<br />

<table>

<tr>

First Name</td>

:</td>

<asp:TextBox ID="fname" runat="server"></asp:TextBox></td>

</tr>

<tr>

Last Name</td>

:</td>

<asp:TextBox ID="lname" runat="server"></asp:TextBox></td>

</tr>

<tr>

Date of Birth</td>

:</td>

<asp:TextBox ID="dob" runat="server"></asp:TextBox></td>

</tr>

<tr>

Gender</td>

:</td>

<asp:TextBox ID="gender" runat="server"></asp:TextBox></td>

</tr>

<tr>

Father's Name</td>

:</td>

<asp:TextBox ID="fathername" runat="server"></asp:TextBox></td>

</tr>

<tr>

Contact Number</td>

:</td>

<asp:TextBox ID="contact" runat="server"></asp:TextBox></td>

</tr>

<tr>

Address</td>

:</td>

<asp:TextBox ID="address" runat="server"></asp:TextBox></td>

</tr>

<tr>

</td>

</td>

<asp:Label ID="conform" runat="server" Text="Submitted, thank you !" Visible="False"

Width="152px"></asp:Label></td>

</tr>

<tr>

</td>

</td>

<asp:Button ID="submit" runat="server" Text="Submit" OnClick="submit_Click" /></td>

</tr>

</table>

</div>

<br />

<strong><span style="text-decoration: underline">Database Details</span></strong><br />

<br />

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataSourceID="SqlDataSource1"

EmptyDataText="There are no data records to display.">

<asp:BoundField DataField="id" HeaderText="id" SortExpression="id" />

<asp:BoundField DataField="fname" HeaderText="fname" SortExpression="fname" />

<asp:BoundField DataField="lname" HeaderText="lname" SortExpression="lname" />

<asp:BoundField DataField="dob" HeaderText="dob" SortExpression="dob" />

<asp:BoundField DataField="gender" HeaderText="gender" SortExpression="gender" />

<asp:BoundField DataField="fathername" HeaderText="fathername" SortExpression="fathername" />

<asp:BoundField DataField="contact" HeaderText="contact" SortExpression="contact" />

<asp:BoundField DataField="address" HeaderText="address" SortExpression="address" />

</Columns>

</asp:GridView>

<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ConnectionStrings:onlineapplicationformConnectionString1 %>"

ProviderName="<%$ ConnectionStrings:onlineapplicationformConnectionString1.ProviderName %>"

SelectCommand="SELECT [id], [fname], [lname], [dob], [gender], [fathername], [contact], [address] FROM [onlineapplication]">

</asp:SqlDataSource>

</div>

</form>

</body>

</html>

In Default.aspx.cs Page

using System;

using System.Data;

using System.Configuration;

using System.Data.SqlClient;

using System.ComponentModel;

using System.Collections;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;

public partial class Default2 : System.Web.UI.Page

{

public string GetConnectionString()

{

//we will set up the configuration which will call our

//web.config file to provide the database details because

//in configuration file we have created the <connectionStrings>

//in the process we draged and droped. It creates automatically.

//We normally put the database details in web.config file or

//machine.config file because it is very sensitive information

//usually there IP address of remote database, passwords and

//user names are stored.

return System.Configuration.ConfigurationManager.ConnectionStrings

["onlineapplicationformConnectionString1"].ConnectionString;

//in above line "onlineapplicationformConnectionString1" is

//our configuration name which is inside the web.config file.

}

private void execution(string fname, string lname, string dob, string gender, string fathername, string contact, stringaddress)

{

//In above line we declaring different variables same as backend

SqlConnection conn = new SqlConnection(GetConnectionString());

//In above line we are calling connection

//string function which is defined already on top

string sql = "INSERT INTO onlineapplication (fname, lname, dob, gender, fathername, contact, address) VALUES "

+ " (@fname, @lname, @dob, @gender, @fathername, @contact, @address)";

//In above lines we are just storing the sql commands which

//will insert value in onlineapplication named table,

//using variable named sql.

try

{

conn.Open();

SqlCommand cmd = new SqlCommand(sql, conn);

//In above lines we are opening the connection to work and

//also storing connection name and sql command in cmd variable

//which has 'SqlCommand' type.

SqlParameter[] pram = new SqlParameter[7];

//In above lines we are defining 7 sql parameters will be use

//In below lines we will not disscuss about id column

pram[0] = new SqlParameter("@fname", SqlDbType.VarChar, 50);

pram[1] = new SqlParameter("@lname", SqlDbType.VarChar, 50);

pram[2] = new SqlParameter("@dob", SqlDbType.VarChar, 50);

pram[3] = new SqlParameter("@gender", SqlDbType.Char, 10);

pram[4] = new SqlParameter("@fathername", SqlDbType.VarChar, 50);

pram[5] = new SqlParameter("@contact", SqlDbType.Int, 20);

pram[6] = new SqlParameter("@address", SqlDbType.VarChar, 100);

//Now we set-uped all fiels in database in above lines

//Now we will set-up form fields

pram[0].Value = fname;

pram[1].Value = lname;

pram[2].Value = dob;

pram[3].Value = gender;

pram[4].Value = fathername;

pram[5].Value = contact;

pram[6].Value = address;

//Now create loop to insert

for (int i = 0; i < pram.Length; i++)

{

cmd.Parameters.Add(pram[i]);

}

cmd.CommandType = CommandType.Text;

cmd.ExecuteNonQuery();

}

catch (System.Data.SqlClient.SqlException ex_msg)

{

//Here will be catch elements

string msg = "Error occured while inserting";

msg += ex_msg.Message;

throw new Exception(msg);

}

finally

{

//Here will be fially elements

conn.Close();

}

protected void Page_Load(object sender, EventArgs e)

{

}

protected void submit_Click(object sender, EventArgs e)

{

//Here is the command inside the click event of button

if (fname.Text == "")

{

Response.Write("Please complete the form.");

}

else

{

execution(fname.Text, lname.Text, dob.Text, gender.Text, fathername.Text, contact.Text, address.Text);

conform.Visible = true;

fname.Text = "";

lname.Text = "";

dob.Text = "";

gender.Text = "";

fathername.Text = "";

contact.Text = "";

address.Text = "";

}

After all coding run the web application and sees the following results. You have to enter some data using text box and click on submit button. After submit button clicks you can see the enabled label with the message "Submitted, thank you!" behind the button.

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