How to Build Form Filling application in ASP.NET like IBPS

Introduction
Hi Friends ! After few hard work,Finally,I have made a Form Filling Application like IBPS or others.You can use this concepts on many places in your web application.I have gathered lots of information about this Form filling application from Internet and users then finally developed this application.I have solved some comments questions of users also in this applicaion .Now days every one is aware about form filling application because they fill online form Normally every day.If you Want to make a Large Project then you have to  learn small -small concepts first.I have used many small concepts in this application which i have used in our previous post or others and Built this form filling application.I will show you what small concepts have been used in this application later.
How to use this form filling application:- 
When User Run this Form Filling Application and fill all required fields details.

• If users fill every details correctly which are already mentioned in Form and After that Press Submit&Save Button then one Registration Number will be generated.
• If users blank any fields then  Submit&Save button will not work because i have used Validation controls.
• If user upload photo size greater than 25 kb and Signature size greater than 12 kb ,then it will show error.
• When user press Preview Button,then it will show complete details of user with photo and Signature, which he/she has filled in Form previously .
• An User can take print out of your application by clicking Click to Print Button on the form.
• An User can get your Admit Card by this Registration Number.

How many Asp.Net Controls have been Used in this Application:- 

In this Application i have used following asp.net controls which are given below:-

• Install Ajax Toolkit
• ToolkitScriptManager
• Calender Extender 
• Table
• Radio Button
• FileUpload
• Button
• Label
• SqlDataSource
• Validation (RequiredFieldValidator and RegularExpressionValidator) control
• Image Control 

What small concepts have been used in this Form filling application:-

• How to select one Radio Button and save selected value in database.
• How to link calender Extender control to TextBox.
• How to use FileUpload control for read and write data to the database.
• How to configure sql data source.
• How to add captcha control and validate with TextBox. More Details... 
• How to add .mdf file on website and create a table with some columns.
• How to pass control value or  variable value from one page to another page using session variable.
• How to set primary key constraints on a table column .More Details...
• How to generate registration number using c# and store it to database.                     More Details...
• How to Display image in image control.
• How to send Registration Number to the user's mail box using c#.
• How to insert image in database and display it to image control.
• How to solve sql injection problem in asp.net by the parameterized connection string. More Details...
• How to implement Exception handling concepts in any asp.net application.               More Details...
• How to display current system date in label control.
• How to print any asp.net application using java script.
• How to allocate memory for any uploaded image in array.
• How to put restriction in image size when any user upload your image using FileUpload control.
• How to use validation control in asp.net application. More Details... 

I have used this small -small concepts in this application.You can make many applications in asp.net by using this whole concepts .You can implement some extra features also in this application as given below:-

1. Create a admin page by using Form Based Authentication Technique from here.
2. Add a data List control for edit ,update,delete and cancel the clients records here.
3. You can make profile page for every user like Facebook.

There are some steps to make this form filling application which are given below:-

Step 1 :- First open your visual studio -->File -->New-->website -->Select ASP.NET Empty website -->OK--> Open Solution Explorer -->Add a New Web Form (Default.aspx) as shown below:-

Step 2 :-Now Drag and Drop Table and Image control on the form (Default.aspx)-->after that open solution Explorer -->Right click on project Add New Folder -->Now copy an image from your desktop and paste in this folder-->Go properties of image control -->Open ImageUrl --> select Image as shown below:-

Step 3 :- Now Click OK Button -->You will see following Output as shown below:-

Note:- You can use Master page instead of this technique.

Step 4 :-Now Drag and Drop Table,Label,TextBox,Radio button,FileUpload,Button and SqlDataSource Controls on the form (default.aspx) as shown below:-

Step 5 :- Now Right click on each Radio Button -->Properties -->Set Group Name=Radio as shown below:-

Step 6 :- Link your Calendar Extender control with TextBox-->You have to follow for this  here-->You will see following output as shown below:-

Step 7 :- Now Add captcha image on form  from this post here -->you will see following output as shown below:-

Step 8 :- Now Add .mdf file --> create a New Table (students) and add columns as given below -->set primary key at sid column -->After that set Identity specification (Identity Increment =yes ) as shown below:-

Note :- You can refer following link for step as given below:-

• How to add .mdf database file on asp.net website
• How to solve sql server problems easily
• How to attach .mdf database in sql server easily

Step 9 :- Now open defualt.aspx page --> Configure your SqlDataSource -->choose connection strins(regconnectionStrings )-->select students table -->proceed with next Button -->click Finish as show below:-

Step 10 :- Now Double click on submit&save and Preview buttons -->Write the following c# codes as given below:-  

using System;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.IO;
using System.Data.SqlClient;
using System.Configuration;
using System.Net.Mail;
using System.Net;

public partial class _Default : System.Web.UI.Page
{
    //Gerate a Unique Number...
      public String characters = "0123456789";

      public string UniqueNumber()
      {
          Random unique1 = new Random();
          string s = "MNT";
          int unique;
          int n = 0;
          while (n < 10)
          {
              if (n % 2 == 0)
              {
                  s += unique1.Next(10).ToString();

              }
              else
              {
                  unique = unique1.Next(52);
                  if (unique < this.characters.Length)
                      s = String.Concat(s, this.characters[unique]);
              }
              Label2.Text = s.ToString();
              n++;
          }
          return s;
      }
    protected void Button1_Click1(object sender, EventArgs e)
      {
       String p = UniqueNumber();
       //select one rado button value
       string cast = null;
       if (RadioButton1.Checked)
        {
           cast = "General";
        }
       else if (RadioButton2.Checked)
        {
         cast = "OBC";
        }
       else if (RadioButton3.Checked)
        {
         cast = "SC";
        }
       else if (RadioButton4.Checked)
       {
        cast = "ST";
       }
       else
        {
        cast = null;
        }
   // Allocate memory for image and signature
  byte[] image_Byte = new byte[FileUpload1.PostedFile.InputStream.Length + 1];
  FileUpload1.PostedFile.InputStream.Read(image_Byte, 0, image_Byte.Length);
  byte[] sign_Byte = new byte[FileUpload2.PostedFile.InputStream.Length + 1];
  FileUpload2.PostedFile.InputStream.Read(sign_Byte, 0, sign_Byte.Length);
 //Check whether image size 25 kb and signature size 12 kb or not
 long size_img = FileUpload1.PostedFile.InputStream.Length;
 long size_sign = FileUpload2.PostedFile.InputStream.Length;
  if (size_img > 25600 | size_sign > 12228)
   {
     Label1.Text = "Please Enter image size less than 25kb and Signature size less than 12kb.Your image and signature size(in byte) are:- "+size_img +',' +size_sign ;
     Label2.Text = null;
   }
  else
   {
 //create connection string for save values to students table
 SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["regConnectionString"].ConnectionString);
    con.Open();
SqlCommand cmd = new SqlCommand("insert into students values(@n,@a,@r,@b,@c,@d,@e,@f,@p,@q)", con);
     cmd.Parameters.AddWithValue("n", Label2.Text);
     cmd.Parameters.AddWithValue("a", TextBox1.Text);
     cmd.Parameters.AddWithValue("r", cast);
     cmd.Parameters.AddWithValue("b", TextBox5.Text);
     cmd.Parameters.AddWithValue("c", TextBox2.Text);
     cmd.Parameters.AddWithValue("d", TextBox3.Text);
     cmd.Parameters.AddWithValue("e", TextBox4.Text);
     cmd.Parameters.AddWithValue("f", TextBox6.Text);
     cmd.Parameters.AddWithValue("p", image_Byte);
     cmd.Parameters.AddWithValue("q", sign_Byte);
 FileUpload Upload_image = (FileUpload)this.FindControl("FileUpload1");
 FileUpload Upload_sign = (FileUpload)this.FindControl("FileUpload2");
// Store required control values to the session variables
     Session["number"] = Label2.Text;
     Session["name"] = TextBox1.Text;
     Session["category"] = cast;
     Session["dob"] = TextBox5.Text;
     Session["mobile"] = TextBox2.Text;
     Session["qualification"] = TextBox3.Text;
     Session["city"] = TextBox4.Text;
     Session["email"] = TextBox6.Text;
     captcha1.ValidateCaptcha(TextBox7.Text.Trim());
     try
      {
      if (Upload_image.HasFile && Upload_sign.HasFile && captcha1.UserValidated)
       {
          int i = cmd.ExecuteNonQuery();
           if (i > 0)
                      {
// Send Regisration number to user's mail box after submitting the form successfully
        SmtpClient smtpc = new SmtpClient("smtp.gmail.com");
        smtpc.Port = 587;
        smtpc.EnableSsl = true;
        smtpc.UseDefaultCredentials = false;
        string user = "aryasamaj348@gmail.com"; //<--Enter your gmail id here
        string pass = "9093870962";//<--Enter Your gmail password here
        string sub = "Form filling Application:"; //Subject for your website
        string msg = "Webcome to http://msdotnet.co.in Your Registration Number is: " + Label2.Text;  //Message body
        smtpc.Credentials = new NetworkCredential(user, pass);
        MailMessage email = new MailMessage(user, TextBox6.Text, sub, msg);
        smtpc.Send(email);
 Label1.Text = "Your form has been submitted successfully.TakePreview Now,Your Registration Number is: ";
        Label3.Text = null;
     }
      else
        {
         Label1.Text = "Your form has been not submitted successfully try again later";
         Label3.Text = null;
         Label2.Text = null;
         }
      }
        else
         {
           Label3.ForeColor = System.Drawing.Color.Red;
           Label3.Text = "Enter Valid Captcha code";
           Label2.Text = null;
          }
       }
         catch (Exception ex)
           {
            Label1.Text = ex.Message;
           }
           finally
            {
              con.Close();
            }
          }
      }
    protected void Button2_Click(object sender, EventArgs e)
    {  // for goto default2.aspx page
        Response.Redirect("Default2.aspx");
    }
    
}

Description:- In above c# codes ,I have performed following steps which are already mentioned in the above c# codes in comment section. There are some steps which i have performed in this codes as given below;-

• First i have generate a unique Number and store it into Label 2 control.
• After that select one Radio Button value and store it to a 'cast' Variable.
• After that ,i have allocated memory of array for image size, signature size and Read its size value.
• After that i have checked whether image size is 25 kb and signature size is 12 kb or not.If user Upload any image greater than 25 and 12 kb then it will show error.i will show you it in below output section.
• After that created a sql connection strings for save the controls and variables values to the Students Table.
• After that Stored required fields(controls and variables) values to the session variables. Session variables basically are used to transfer the values from one page to another page.For More Here.
• After that send Registration Number to the respective user's mail box after submitting the application successfully.

Note:-Please put your gmail id and password in c# code section ,otherwise it will show some error. 

Step 11 :- Now open Solution Explorer --> Add a New web form (default2.aspx)-->Drag and Drop Table control (add row and column) Labels and Image controls on the form as shown below:-

Step 12 :-Now click Source button --> Add java script codes for print operation as given below:-

<head runat="server">
    <title></title>
    <script type="text/javascript">
        function print_page()
         {
            window.print();
        }
    </script>
    </head>
    <div>
      <a href="#" onclick="javascript :print_page();"><strong><span class="style1">Click to Print</span></strong></a>
      </div> 

Note:- Put print button codes where it is suitable for users.

Step 13 :- Now Press F7 and write the following c# codes on the form(default.aspx.cs) as given below:-

using System;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Configuration;
using System.Data.SqlClient;
public partial class Default2 : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {    //declared the function
        Retrieve_Image_signFromDB();
        // holds the session variables
        Label1.Text = Session["number"].ToString();
        Label2.Text = Session["name"].ToString();
        Label3.Text = Session["category"].ToString();
        Label4.Text = Session["dob"].ToString();
        Label5.Text = Session["mobile"].ToString();
        Label6.Text = Session["qualification"].ToString();
        Label7.Text = Session["city"].ToString();
        Label8.Text = Session["email"].ToString();
        Label9.Text = System.DateTime.Today.ToShortDateString().ToString();
    }
    private void Retrieve_Image_signFromDB()
    {
        //Retriev the image url by the default3 and default4 page
        Image1.ImageUrl = "Default3.aspx";
        Image2.ImageUrl = "Default4.aspx";   
    }
}

Step 14 :- Now open your Solution Explorer -->Add a New web Form (default3.aspx)-->press F 7 -->Write the c# codes in default3.aspx.cs  file as given below:-

using System;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Configuration;
using System.Data.SqlClient;

public partial class Default3 : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["regConnectionString"].ConnectionString);
        con.Open();
        SqlCommand cmd = new SqlCommand("select image from students where [reg_no] ='" + Session["number"].ToString()+ "'", con);
        SqlDataReader dr = cmd.ExecuteReader();
        //we have to typecast to byte[] before feeding it to BinaryWrite method.
        if (dr.Read())
        {
            Response.BinaryWrite((byte[])dr["image"]);
        }
        con.Close();
    }
}

Step 15 :- Now open your solution explorer  again-->Add a New web Form (default4.aspx)-->press F 7 -->Write the c# codes in default4.aspx.cs  file as given below:-

using System;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Configuration;
using System.Data.SqlClient;
public partial class Default4 : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
         SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["regConnectionString"].ConnectionString);
        con.Open();
        SqlCommand cmd = new SqlCommand("select sign from students where [reg_no] ='" + Session["number"].ToString()+ "'", con);
        SqlDataReader dr = cmd.ExecuteReader();
        //we have to typecast to byte[] before feeding it to BinaryWrite method.
        if (dr.Read())
        {
            Response.BinaryWrite((byte[])dr["sign"]);
        }
        con.Close();
    }
    }

Description:- Why we use default3.aspx and default4.aspx form ?
Ans:- 

• In this page ,i have written the c# codes which is used to fetch the image from student table with help of registration number.Here i want to receive image as an URL formt because image controls take values in URL format.
• I have passed registration number value by session variable to this page(default3.aspx and default4.aspx) .you can use query strings also for this operation.

Step 16 :- Now First connect your Internet --> Run the  application (press F 5)--> Now Enter all required field details in this page as shown below:-

Note:- First set Starup page as default.aspx otherwise it may show session variables error.Means Run  default.aspx page first.

Step 17 :- Now press Submit&Save Button -->One Registration Number will be generated and displayed on the top of the page as shown below -->and One registration Number will be sent to your email id.

Step 18 :- Now open your email id which you have mentioned in form -->You will see one email is received with a  registration Number as shown below:-

 Note:-Check your spam or Junk folder also if you don't see it in your inbox.
Step 19 :- Now open your Database.mdf file from Solution Explorer -->Right click on students table -->press Show Table Data --> You will see following records in students table as shown below:-

Step 20 :- Now click Preview Button --> You will see following output as shown below:-

Step 21 :- Now Press Click to Print button -->You will see following output as shown below:-

Note :- Use Google Chrome Browser.It may better than other browsers. You can easily print and save the application as .PDF File. Check this PDF File here.
Step 22 :- Suppose any user upload image size greater than 25 kb or signature size greater than 12 kb then this application will give error as shown below:-

Step 23 :- If you want to run this whole web application directly on your visual studio then follow below steps which are given below:-

• First Download this whole application from bottom and Extract it-->Copy this whole file (cltr+c).
• Now open your visual studio --> File --.New --.website -->Select ASP.NET Empty website -->OK -->Now open Solution Explorer -->Right click on project -->Paste this whole application which you have copied previously. 
• Now  first Open Database.mdf file --.if it is showing error -->then delete this whole Databas.mdf file (otherwise no need to follow next steps) -->Now add another Database.mdf file -->Create New Table students with same column name as mentioned in step 8.
• Now Run the application-->then you can run this application successfully.

Note:- Suppose you want to build asp.net application for any organization then you have to follow two this which are helpful for security purpose.

• You have to change your TextBox ,Label ,FileUpload and others like this TextBox1.Text  --change--> mytxt or Label1.Text --change --> lbmsg  similarity follow  other also.I have not changed it in post because user can understand this easily.
• Use  parameterized connection strings in database connection always.
• Others security features also available but it is not free.So you have follow only above two technique.

For More...

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I hope this is helpful for you.

Please share this application and put your valuable comments.If you have confusion in any steps ,you can ask frequently.I will help you definitely .

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