| Author: Lalji 04 Nov 2009 | Member Level: Diamond | Rating:  Points: 3 |
you can try this code sample
private void textBox1_Validating(object sender, CancelEventArgs e)
{
System.Text.RegularExpressions.Regex rEMail = new System.Text.RegularExpressions.Regex(@"^[a-zA-Z][\w\.-]{2,28}[a-zA-Z0-9]@[a-zA-Z0-9][\w\.-]*[a-zA-Z0-9]\.[a-zA-Z][a-zA-Z\.]*[a-zA-Z]$");
if (textBox1.Text.Length > 0)
{
if (!rEMail.IsMatch(textBox1.Text))
{
MessageBox.Show("E-Mail expected", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
textBox1.SelectAll();
e.Cancel = true;
}
}
}
|
| Author: vipul 04 Nov 2009 | Member Level: Diamond | Rating: Points: 2 |
hi,
for that you can do this way
First go to the textbox property in that event and select "textBox1_Validating" event and in that you ca nwrite this way
using System.Text.RegularExpressions;
private void textBox1_Validating(object sender, CancelEventArgs e)
{
System.Text.RegularExpressions.Regex rEMail = new System.Text.RegularExpressions.Regex(@"^[a-zA-Z][\w\.-]{2,28}[a-zA-Z0-9]@[a-zA-Z0-9][\w\.-]*[a-zA-Z0-9]\.[a-zA-Z][a-zA-Z\.]*[a-zA-Z]$");
if (textBox1.Text.Length > 0)
{
if (!rEMail.IsMatch(textBox1.Text))
{
MessageBox.Show("E-Mail expected", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
textBox1.SelectAll();
e.Cancel = true;
}
}
}
Please Rate This Answer If They Helpful
Thanks & Regards
Patel Vipul
|
| Author: yugandherReddy 10 Nov 2009 | Member Level: Bronze | Rating: Points: 2 |
use this code..
public static class TestEmail
{
/// <summary>
/// Regular expression, which is used to validate an E-Mail address.
/// </summary>
public const string MatchEmailPattern =
@"^(([\w-]+\.)+[\w-]+|([a-zA-Z]{1}|[\w-]{2,}))@"
+ @"((([0-1]?[0-9]{1,2}|25[0-5]|2[0-4][0-9])\.([0-1]?
[0-9]{1,2}|25[0-5]|2[0-4][0-9])\."
+ @"([0-1]?[0-9]{1,2}|25[0-5]|2[0-4][0-9])\.([0-1]?
[0-9]{1,2}|25[0-5]|2[0-4][0-9])){1}|"
+ @"([a-zA-Z]+[\w-]+\.)+[a-zA-Z]{2,4})$";
/// <summary>
/// Checks whether the given Email-Parameter is a valid E-Mail address.
/// </summary>
/// <param name="email">Parameter-string that contains an E-Mail address.</param>
/// <returns>True, when Parameter-string is not null and
/// contains a valid E-Mail address;
/// otherwise false.</returns>
public static bool IsEmail(string email)
{
if (email != null) return Regex.IsMatch(email, MatchEmailPattern);
else return false;
}
}
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