C # how to add the WinFrom ErrorProvider Control,

C # how to add the WinFrom ErrorProvider Control,

C # how to add the WinFrom ErrorProvider Control

Using System;

Using System. Collections. Generic;

Using System. ComponentModel;

Using System. Data;

Using System. Drawing;

Using System. Linq;

Using System. Text;

Using System. Threading. Tasks;

Using System. Windows. Forms;

Namespace _ 13. _ 12_ErrorProvider Control

{

Public partial class Form1: Form

{

Public Form1 ()

{

InitializeComponent ();

}

Private void textBox1_TextChanged (object sender, EventArgs e)

{

If (textBox1.Text. Length <8 | textBox1.Text. Length> 10)

{

ErrorProvider1.SetError (textBox1, "the user name must be 8 ~ 10 digits ");

}

Else

{

ErrorProvider1.SetError (textBox1, "verified ");

ErrorProvider1.Icon = new Icon (@ "D: \ ICO \ dks. ico ");

}

}

Private void textBox2_TextChanged (object sender, EventArgs e)

{

If (textBox2.Text. Length <6)

{

ErrorProvider2.SetError (textBox2, "the user password must be greater than 6 characters ");

}

Else

{

ErrorProvider2.SetError (textBox2, "verified ");

ErrorProvider2.Icon = new Icon (@ "D: \ ICO \ icon. ico ");

}

}

Private void textBox3_TextChanged (object sender, EventArgs e)

{

If (textBox3.Text! = TextBox2.Text)

{

ErrorProvider3.SetError (textBox3, "the second user password must be consistent ");

}

Else

{

ErrorProvider3.SetError (textBox3, "verified ");

ErrorProvider3.Icon = new Icon (@ "D: \ ICO \ GameIcon. ico ");

}

}

Private void button#click (object sender, EventArgs e)

{

MessageBox. Show ("registered successfully", "system prompt ");

Application. Exit ();

}

}

}

1. Add the ErrorProvider control to the view