Textbox validation

Question

i Hav got a textbox and itshoud be validated with a query.On tabchange to another textbox field itshoud be validated with a query and return it and not able to write in the next textbox untill the first textbox is validated.

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 Textbox { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void textBox1_Leave(object sender EventArgs e) { textBox2.Enabled = true; foreach (Control cnt in this.Controls) { if (cnt is TextBox) { if (cnt.Text == ) { textBox2.Enabled = false; } else { textBox2.Enabled = true; } } } } private void textBox1_Enter(object sender EventArgs e) { textBox2.Enabled = true; textBox2.Text = ; } } }

Santosh Pisipati · Answer

on tab change it should not go to the next textboxrather it should validate with the sqlquery (whether true or false) if true then it should go to the next textbox otherwise it should return and error. This also should be done on tabcontrol change.

Anuja Pawar · Answer

Need to be more clear on tab change what you want in the textbox what query you want to validate for the textbox