Please disable your adblock and script blockers to view this page
 

How to create Change password form/page in asp.net using Sql server and Stored procedure

Introduction: In this article I am going to explain with example how to create change password page/ form in asp.net using both the C# and VB.Net languages and using Stored procedure and Sql server as a back end database.

How to create change password form  with code in asp.net

Description:  In this article you will learn the following:
  1. How to create change password form and update the password. 
  2. How to check credentials i.e. username and password from the Sql server database 
  3. How to use output parameter in stored procedure to return value.And how to get/read the return output in the code behind. 
  4. How to use COLLATE Latin1_general_CS_AS to check for case sensitive match.

The concept is simple. We first need to check  the entered username and password against the database and if matched then the new password will overwrite the old password otherwise message will be displayed "Wrong Username/Password"

Implementation: Let’s create an asp.net application to understand the concept.
  • First of all create a Sql server database and name it "MyDataBase" and create a table with the following fields and name it "Login_Tb"
Column Name
Data Type
Id
Int( Primary Key. So set Is Identity=True)
UserName
varchar(100)
Password
varchar(100)
  • Add dummy username e.g. admin and password e.g. demo in the table.
  • Then create a Stored Procedure to check existing username and password and change the password as:
CREATE PROCEDURE Change_Pwd_sp
(             
                @username                       VARCHAR(100),
                @old_pwd                          VARCHAR(50),
                @new_pwd                        VARCHAR(50),
                @status                              int OUTPUT
)
AS
BEGIN 
               
IF EXISTS(SELECT * FROM Login_Tb WHERE UserName COLLATE Latin1_general_CS_AS=@username AND [PASSWORD] COLLATE Latin1_general_CS_AS=@old_pwd)
                                BEGIN
                                                UPDATE Login_Tb SET [PASSWORD]=@new_pwd WHERE UserName=@username
                                                SET @status=1
                                END
ELSE                    
                                BEGIN 
                                                SET @status=0
                                END     
END
RETURN @status

In this stored procedure first the entered username and password will be checked from the database and if matched then the new password will overwrite the old password otherwise message will be displayed "Wrong Username/Password". we are using Output parameter to return the status i.e 1  for success and 0 for failure. Also Notice that in this stored procedure i have also used the COLLATE Latin1_general_CS_AS to check for the exact username and password match because it is used to make the sql queries case sensitive. e.g. if the username is admin and password is demo then if user enters Admin in username or Demo in password field then it will not match and it will not update the username and password. 
  • Now in the web.config file create the connection string to connect our asp.net web application with the Sql server database as.
  <connectionStrings>
    <add name="conStr" connectionString="Data Source=lalit;Initial Catalog=MyDataBase;Integrated Security=True"/>
  </connectionStrings>

Note: Replace the Data Source and the Initial Catalog(database name) as per your application.

HTML Source Code:
  • In the <Form> tag of the design page(.aspx) design the page as:
<div>
    <fieldset style="width:350px;">
    <legend>Change password example in asp.net</legend>
    <table>
    <tr>
    <td>User Name: * </td>
    <td>
        <asp:TextBox ID="txtUserName" runat="server"></asp:TextBox><br />
        <asp:RequiredFieldValidator ID="rfvuserName" runat="server"
            ErrorMessage="Please enter User Name" ControlToValidate="txtUserName"
            Display="Dynamic" ForeColor="Red" SetFocusOnError="True"></asp:RequiredFieldValidator>
        </td>
    </tr>
    <tr>
    <td>Old Password: * </td>
    <td>
        <asp:TextBox ID="txtOldPwd" runat="server" TextMode="Password"></asp:TextBox><br />
        <asp:RequiredFieldValidator ID="rfvOldPwd" runat="server"
            ErrorMessage="Please enter old password" ControlToValidate="txtOldPwd"
            Display="Dynamic" ForeColor="Red" SetFocusOnError="True"></asp:RequiredFieldValidator>
        </td>
    </tr>
     <tr>
    <td>New Password: * </td>
    <td>
        <asp:TextBox ID="txtNewPwd" runat="server" TextMode="Password"></asp:TextBox><br />
        <asp:RequiredFieldValidator ID="rfvNewPwd" runat="server"
            ErrorMessage="Please enter new password" ControlToValidate="txtNewPwd"
            Display="Dynamic" ForeColor="Red" SetFocusOnError="True"></asp:RequiredFieldValidator>
         </td>
    </tr>
         <tr>
    <td>Confirm Password: * </td>
    <td>
        <asp:TextBox ID="txtConfirmPwd" runat="server" TextMode="Password"></asp:TextBox><br />
        <asp:RequiredFieldValidator ID="rfvConfirmPwd" runat="server"
            ErrorMessage="Please re-enter password to confirm"
            ControlToValidate="txtConfirmPwd" Display="Dynamic" ForeColor="Red"
            SetFocusOnError="True"></asp:RequiredFieldValidator>
        <asp:CompareValidator ID="cmvConfirmPwd" runat="server"
            ControlToCompare="txtNewPwd" ControlToValidate="txtConfirmPwd"
            Display="Dynamic" ErrorMessage="New and confirm password didn't match"
            ForeColor="Red" SetFocusOnError="True"></asp:CompareValidator>
             </td>
    </tr>
     <tr>
    <td>
        &nbsp;</td><td>
        <asp:Button ID="btnSubmit" runat="server" Text="Change Password"
             onclick="btnSubmit_Click" /></td>
    </tr>
     <tr>
    <td colspan="2">
        <asp:Label ID="lblStatus" runat="server" Text=""></asp:Label>
         </td>
    </tr>
    </table>
    </fieldset>   
    </div>

Note: I have used the RequiredFieldValidator and CompareValidator validation controls to validate the username and password field.

Asp.Net C# code to create Change password form/page
  • In the code behind file (.aspx.cs) write the following code on change pass word as:
First of all include the following namespaces:

using System.Data;
using System.Data.SqlClient;
using System.Configuration;

then write the code as:

protected void btnSubmit_Click(object sender, EventArgs e)
    {
         try
        {
            SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["conStr"].ConnectionString);
            SqlCommand cmd = new SqlCommand("Change_Pwd_sp", con);
            cmd.CommandType = CommandType.StoredProcedure;
            cmd.Parameters.AddWithValue("@username", txtUserName.Text.Trim());
            cmd.Parameters.AddWithValue("@old_pwd",  txtOldPwd.Text.Trim());
            cmd.Parameters.AddWithValue("@new_pwd", txtNewPwd.Text.Trim());

            cmd.Parameters.Add("@Status", SqlDbType.Int);
            cmd.Parameters["@Status"].Direction = ParameterDirection.Output;
            con.Open();
            cmd.ExecuteNonQuery();      
            cmd.Dispose();
            con.Close();
          //read the return value (i.e status) from the stored procedure
           int retVal= Convert.ToInt32(cmd.Parameters["@Status"].Value);
           if (retVal == 1)
           {
               lblStatus.Text = "Password has been changed successfully";
               // Or show in messagebox using: ScriptManager.RegisterStartupScript(this, this.GetType(), "Message", "alert('Password has been changed successfully');", true);
           }
           else
           {
               lblStatus.Text = "Wrong old username/password. Please re-enter.";
               // Or show in messagebox using: ScriptManager.RegisterStartupScript(this, this.GetType(), "Message", "alert('Wrong username/password. Please re-enter.');", true);
           }          
        }
        catch (Exception ex)
        {
            ScriptManager.RegisterStartupScript(this, this.GetType(), "Message", "alert('Oops!! following error occured : " + ex.Message.ToString() + "');", true);
            // Response.Write("Oops!! following error occured: " +ex.Message.ToString());           
        }       
    }


Asp.Net VB Code to create Change password form/page
  • In the code behind file (.aspx.vb) write the following code on change pass word as:
First of all import the following namespaces:

Imports System.Data
Imports System.Data.SqlClient
Imports System.Configuration

Then write the code as:

Protected Sub btnSubmit_Click(sender As Object, e As System.EventArgs) Handles btnSubmit.Click
        Try
            Dim con As New SqlConnection(ConfigurationManager.ConnectionStrings("conStr").ConnectionString)
            Dim cmd As New SqlCommand("Change_Pwd_sp", con)
            cmd.CommandType = CommandType.StoredProcedure
            cmd.Parameters.AddWithValue("@username", txtUserName.Text.Trim())
            cmd.Parameters.AddWithValue("@old_pwd", txtOldPwd.Text.Trim())
            cmd.Parameters.AddWithValue("@new_pwd", txtNewPwd.Text.Trim())

            cmd.Parameters.Add("@Status", SqlDbType.Int)
            cmd.Parameters("@Status").Direction = ParameterDirection.Output
            con.Open()
            cmd.ExecuteNonQuery()
            cmd.Dispose()
            con.Close()
'read the return value (i.e status) from the stored procedure            
Dim retVal As Integer = Convert.ToInt32(cmd.Parameters("@Status").Value)
            If retVal = 1 Then
                lblStatus.Text = "Password has been changed successfully"
                ' Or show in messagebox using: ScriptManager.RegisterStartupScript(this, this.GetType(), "Message", "alert('Password has been changed successfully');", true);
            Else
                lblStatus.Text = "Wrong old username/password. Please re-enter."
                ' Or show in messagebox using: ScriptManager.RegisterStartupScript(this, this.GetType(), "Message", "alert('Wrong username/password. Please re-enter.');", true);
            End If
        Catch ex As Exception
            ScriptManager.RegisterStartupScript(Me, Me.[GetType](), "Message", "alert('Oops!! following error occured : " & ex.Message.ToString() & "');", True)
            ' Response.Write("Oops!! following error occured: " +ex.Message.ToString()); 
        End Try
    End Sub

Now over to you: 
"If you like my work; you can appreciate by leaving your comments, hitting Facebook like button, following on Google+, Twitter, Linked in and Pinterest, stumbling my posts on stumble upon and subscribing for receiving free updates directly to your inbox . Stay tuned for more technical updates." 
Previous
Next Post »

12 comments

Click here for comments
sivakumar ck
admin
September 06, 2013 ×

sir, i want to create inbox like gmail...
plz help me to get the coding for that

Reply
avatar
September 06, 2013 ×

hello sivakumar ck..check the article: Ajax TabContainer example to create multiple tabs/panels in asp.net
http://www.webcodeexpert.com/2013/08/ajax-tabcontainer-example-to-create.html.
You will get the idea. You can place gridview on each tab/panel and bind appropriate data from the database.

Reply
avatar
Anonymous
admin
October 01, 2013 ×

hello i have tried out this code and this code is returning status 1 but password is not getting updated please suggest

Reply
avatar
October 01, 2013 ×

Hi, have you followed the article properly? i suggest you to recheck your code and try once again as this code is completely tested and working code..if still you face error then let me know..i will help you to sort out your problem..

Reply
avatar
Anonymous
admin
November 03, 2013 ×

Sir i have some problem in making login page for multiple users and connect it with sql server db i mean i making a login page by which three users which are stored in db are looged in through it ......i m working in vb.net 2008

Reply
avatar
November 04, 2013 ×

Hi, what problem you are facing? let me know and i will help you to sort out that problem.

Reply
avatar
Sven Chang
admin
December 04, 2013 ×

Hello Lalit Raghuvanshi can you help me deal my project problem?? It is a ASP.net VB language.

Reply
avatar
Sven Chang
admin
December 04, 2013 ×

Hello Lalit Raghuvanshi, can you help me for my assignment?? It is a ASP.net VB language assignment.

Reply
avatar
January 19, 2014 ×

Sir, i m having this error: Exception Details: System.InvalidOperationException: WebForms UnobtrusiveValidationMode requires a ScriptResourceMapping for 'jquery'. Please add a ScriptResourceMapping named jquery(case-sensitive).
and m not able to understand what it is. i checked the code all good

Reply
avatar
January 19, 2014 ×

Hello Bipika Amatya, check the below mentioned link to sort out your problem.
http://www.webcodeexpert.com/2013/06/how-to-solve-webforms.html

Reply
avatar
Anonymous
admin
March 06, 2014 ×

Sir can u please tell us the code in which a data set is used as we hav been using a data set... we are working with visual studio 2010, asp.net with c# and my sql..

Reply
avatar
Midhun M
admin
May 08, 2014 ×

not getting errors but values are not inserting in table

Reply
avatar

If you have any question about any post, Feel free to ask.You can simply drop a comment below post or contact via Contact Us form. Your feedback and suggestions will be highly appreciated. Also try to leave comments from your account not from the anonymous account so that i can respond to you easily.. ConversionConversion EmoticonEmoticon