check all textboxes to be non-empty on button click

Question

hi friends i have a form in c# with 3 textboxes and a button ... i there to validate textboxes to be non-empty on button ... i want to make each textbox change bgcolor if is empty on button click and stop the button click event?

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 Validation_on_textbox { public partial class Form2 : Form { public Form2() { InitializeComponent(); } private void button1_Click(object sender, EventArgs e) { foreach (Control c1 in this.Controls) { if (c1 is TextBox) { if (c1.Text == "") { MessageBox.Show("Name Field cannnot be blank"); c1.BackColor = Color.Orange; textBox1.Focus(); } else { MessageBox.Show("Correct"); c1.BackColor = Color.White; } } } } } }

Anubhav Chaudhary · Answer

Just write this code on the click of button and your problem will be solved. private void button1_Click(object sender, EventArgs e) { if(textBox1.Text=="") { textBox1.BackColor = Color.Red; } }

Mahesh Babu · Answer

this only console program.......

Iftikar Hussain · Answer

Hi, You can do like this private void button1_Click(object sender, EventArgs e) { bool isValid = true; textBox1.BackColor = System.Drawing.Color.White; textBox2.BackColor = System.Drawing.Color.White; textBox3.BackColor = System.Drawing.Color.White; if (textBox1.Text == "") { isValid = false; textBox1.BackColor = System.Drawing.Color.Red; } if (textBox2.Text == "") { isValid = false; textBox2.BackColor = System.Drawing.Color.Red; } if (textBox3.Text == "") { isValid = false; textBox3.BackColor = System.Drawing.Color.Red; } if (isValid) { //do your code } } Regards, Iftikar

Mahesh Babu · Answer

still it is showing the only my project name i.e oppsproject only...it is not showing my added class

check all textboxes to be non-empty on button click

Answers (5)