C# code for change password?

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hi,

Anyone know this?

C# code for change password?

i have a settings page...in that page i should do the password changes..
code:

C#

protected void btnchange_Click(object sender, EventArgs e)
  {
      int changed;
      string loginemailid = txtloginemailid.Text.Trim();
      string oldpass = txtoldpassword.Text.Trim();
      string newpass = txtnewpassword.Text.Trim();


      if (loginemailid != null && oldpass != null)
      {
          changed = mydac.changeuserpassword(loginemailid, oldpass, newpass);
          if (changed == 1)
          {
              lblmsg.Text = "Your new Password Updated";

          }
      }
      else
      {
          lblmsg.Text = "Updation Failed,Ensure Your Login Information Is Correct";
      }
  }

Posted 12-Feb-12 18:32pm

sathiyak

Updated 8-Jun-17 18:59pm

v3

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Comments

CRDave1988 13-Feb-12 0:39am

very unclear question. improve this.

Varun Sareen 13-Feb-12 0:40am

What password? have you tried something? Please share some code that may put light on where have you stuck.

AshishChaudha 7-Jul-12 1:34am

and ??? where the exception is???

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User 8288577 · Answer 1 · 2012-11-10T03:02:00

If your conditions are depending about each other, an if, else if, else could make it work.

1. Firstly put your code within try catch statement so that you will come to know exact error. Nothing is wrong in this statement

if (Userdetails.password != textBox_Current.Text)
2. Tell exactly how you are executing your program .Where have you declared this class and what is the scope of class.

User 8288577 · Answer 2 · 2012-07-06T15:25:00

class Userdetails
	{
            public static string username;
            public static string password;
     }

SqlConnection Connection = new SqlConnection("Data Source=FARZADFWADIA-PC;Initial Catalog=HRMS;Integrated Security=True");
Connection.Open();

if (textBox_New.Text.Length < 4)
	{
		MessageBox.Show("The Length of the password must be 			atleast in four chars.", "Update Failed"); return;
	}

if (textBox_New.Text != textBox_Verify.Text)
	{
		MessageBox.Show("New Password dose not match Confirm 			Password.", "Update Failed"); return;
	}

if (Userdetails.password != textBox_Current.Text)
	{
		MessageBox.Show("Old Password is not valid.", "Update 		Failed");
		return;
	}

Userdetails.password = textBox_New.Text;
SqlCommand cmd = new SqlCommand("update Login set password=@UserPassword where username="+Userdetails.username);
cmd.Parameters.AddWithValue("@UserPassword", textBox_New.Text);

if (cmd.ExecuteNonQuery().ToString() == "0")
	{
		MessageBox.Show("Password changed successfully.", 			"Process Completed", MessageBoxButtons.OK, 				MessageBoxIcon.Information);
	}
else
	{
		MessageBox.Show("Due to some problems your password 			cannot be changed. Contact your administrator to 			change it 	or try again later.", "Update Failed", 			MessageBoxButtons.OK,MessageBoxIcon.Warning);
	}

this.Close();

Aniket Yadav · Answer 3 · 2012-02-12T18:56:00

Suppose you have 2 textbox named txtNewPassword and txtConfirmedPassword.
After feeding these two textboxes, On the Save Button Click Event Do The Following:
1. Fetch The Record of current user in the datatable.
2. If recordcount > 0 then fire an update query to update the current user's new password.

Sample Code:

C#

if (txtNewPassword.Text == txtConfirmPassword.Text)
    {
        mSQL = "SELECT * FROM TableName WHERE user_name = '" + txtUserName.Text + "' AND password = '" + txtPassword.Text + "'";
        mDT_Save = mDBHelper.GetTable(mSQL);
        if (mDT_Save.Rows.Count > 0)
        {
            for (int i = 0; i < mDT_Save.Rows.Count; i++)
            {
                mSQL = "UPDATE TableName SET password = '" + txtConfirmPassword.Text + "' WHERE user_name = '" + Convert.ToString(mDT_Save.Rows[i]["user_name"]) + "'";
                mDBHelper.ExecuteSQLNonQuery(mSQL);
            }
            MessageBox.Show("Password Changed Successfully");
            txtPassword.Text = txtConfirmPassword.Text;
            return;
       }
       else
       {
            MessageBox.Show("User Not Found");
            return;
       }
    }

Hope through this sample code you will get an idea

uspatel · Answer 4 · 2012-02-12T18:43:00

You can use it by various methods
1 =>Change Password Control
2=>You can take three text boxes.
input:Old password
Input:New
Input:Confirm(Match both new and confirm textbox text)
3=>
change-user-password-in-asp-net-forms-authentication

Simple way

as

C#

protected void Button1_Click(object sender, EventArgs e)
{

string paswd;
paswd="NewPass" // set your password
String str = "update reg set password=@pass where u_name=@u_name and password=@oldpass ";
cmd = new SqlCommand(str, con);
cmd.Parameters.AddWithValue("oldpass",oldpass.Text);
cmd.Parameters.AddWithValue("pass",paswd);
cmd.Parameters.AddWithValue("u_name",txt_nPW.Text);

con.Open();
cmd.ExecuteNonQuery();
con.Close();
Response.Write("Password Changed");

}

C# code for change password?

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