How the username contain alphabet only ...

Question

0.00/5 (No votes)

See more:

i tried a lot of solutions .. but it still save the username contain numbers ..

What I have tried:

VB.NET

If Not Regex.Match(TxtUser.Text, "^[a-z]*$", RegexOptions.IgnoreCase).Success Then
            'If TxtUser.Text Then
            '    Text = TxtUser.Text
            cmd.Parameters.Add("@Username", SqlDbType.VarChar)
            cmd.Parameters("@Username").Value = TxtUser.Text

            MsgBox("Please enter alpha text only.")
            TxtUser.Focus()
            'Else
            'MsgBox("false")
            cmd.Parameters.Add("@Password1", SqlDbType.VarChar)
            cmd.Parameters("@Password1").Value = TxtPass.Text
            con.Open()
            ADD.Fill(ds, "Tabel")
            'Server.Transfer("login.aspx", True)
            con.Close()
            'TextBox1_TextChanged()
            Session("loaddata") = ds.Tables("Tabel")
            If ds.Tables("Tabel").Rows(0)("x") = 0 Then
                MsgBox("True")
                'Server.Transfer("login.aspx", True)
                'Response.Redirect("login.aspx")
            Else
                MsgBox("False")
            End If
        End If

Posted 23-Mar-16 23:01pm

Malak Hudaib

Updated 23-Mar-16 23:41pm

Maciej Los

v2

Add a Solution

Comments

Richard MacCutchan 24-Mar-16 5:19am

Apart from your error, you are storing the password in clear text, which is wrong.

Malak Hudaib 24-Mar-16 5:27am

hi, yes i know ,but now i want the username contain alphabet only..

Richard MacCutchan 24-Mar-16 5:32am


If Not Regex.Match(TxtUser.Text, "^[a-z]*$", RegexOptions.IgnoreCase).Success Then
    ' no match, so reject the text
Else
    ' valid username so accept it
EndIf

Start with that and fill in the relevant code for the two cases.

Member 12392991 25-Mar-16 1:46am

on textchange event of the txtuser field you may compare the regualar expression against the character you enter. if it is a character set a flag to true otherwise false.

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Patrice T · Answer 1 · 2016-03-23T23:41:00

You should learn to use the debugger as soon as possible. Rather than guessing what your code is doing, It is time to see your code executing and ensuring that it does what you expect.

The debugger allow you to follow the execution line by line, inspect variables and you will see that there is a point where it stop doing what you expect.
Mastering Debugging in Visual Studio 2010 - A Beginner's Guide[^]
http://docs.oracle.com/javase/7/docs/technotes/tools/windows/jdb.html[^]
https://www.jetbrains.com/idea/help/debugging-your-first-java-application.html[^]

Your code look confuse, use the debugger to see what it does exactly.
Feel free to put comments that say what you are doing, it also help to understand what is your intention.