How to validation for combox in windows applications

Question

Hi Guys, How to give validation in window applications based on ComboBox .can u explain plz.

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 WindowsFormsApplication1 { public partial class Form3 : Form { public Form3() { InitializeComponent(); } private void button1_Click(object sender, EventArgs e) { foreach (Control cnt in this.Controls) { if (cnt is ComboBox) { ComboBox cmb = (ComboBox)cnt; if (cmb.SelectedItem == null) { errorProvider1.SetError(cmb, "Combox is not Selected"); cnt.BackColor = Color.Plum; } } } } private void Form3_Load(object sender, EventArgs e) { comboBox1.Items.Add("a"); } } }

Appala Raju Vurukooti · Answer

Hi Nayak But i need based on the ErrorProvider Control in windows applications.

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 WindowsFormsApplication1 { public partial class Form3 : Form { public Form3() { InitializeComponent(); } private void button1_Click(object sender, EventArgs e) { foreach (Control cnt in this.Controls) { if (cnt is ComboBox) { ComboBox cmb = (ComboBox)cnt; if (cmb.SelectedItem == null) { MessageBox.Show("Combox is not Selected."); cnt.BackColor = Color.Plum; } } } } private void Form3_Load(object sender, EventArgs e) { comboBox1.Items.Add("a"); } } }