How to validate Password textbox C# winfrom

Question

Hi, I have a change password form, which I would like to check : 1.it shouldn't be empty or null 2.txtNewpassword.Text = txtConfimPassword.Text How to write if statement for those conditions./ Thanks.

Jignesh Trivedi · Answer

hi, try string newPassword = txtNewpassword.Text; string confirmPassword = txtConfimPassword.Text; if (!string.IsNullOrEmpty(newPassword) && !string.IsNullOrEmpty(newPassword) && newPassword.Equals(confirmPassword)) { //do change password. } else { //show the error. } hope this will help you.

Shankar M · Answer

Hi Nazhand , You can use check for null or empty values using string.IsNullOrEmpty method of string class. if(string.IsNullOrEmpty( txtNewpassword.Text )) { MessageBox.Show("Please enter values"); return; }

Satyapriya Nayak · Answer

using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; namespace Fetch_multi_in_combobox { public partial class Form3 : Form { public Form3() { InitializeComponent(); } private void button1_Click(object sender, EventArgs e) { if (txtNewpassword.Text == "" || txtConfimPassword.Text == "") { MessageBox.Show("Please enter values"); return; } if (txtConfimPassword.Text != txtNewpassword.Text) { MessageBox.Show("confirm password not matching with new passsword"); txtConfimPassword.Focus(); return; } } } }

How to validate Password textbox C# winfrom

Answers (3)