validation checks in desktop application

[software student]

in windows application i want to apply validation checks.i hv tried one for empty textbox
i.e.
if (textBox1.Text == "")
{
MessageBox.Show("Enter phone number", "Error in Input", MessageBoxButtons.OK, MessageBoxIcon.Information);
this.textBox1.Clear();
this.textBox1.Focus();
return;
}

[Atran]

in windows application i want to apply validation checks.i hv tried one for empty textbox
i.e.
if (textBox1.Text == "")
{
MessageBox.Show("Enter phone number", "Error in Input", MessageBoxButtons.OK, MessageBoxIcon.Information);
this.textBox1.Clear();
this.textBox1.Focus();
return;
}

Hello:
I dont understand what do you want?
But maybe I can help you, check this link:
Check if a textbox contains a number..

Hope I helped you.

[software student]

Hello:
I dont understand what do you want?
But maybe I can help you, check this link:
Check if a textbox contains a number..

Hope I helped you.

:)
actually i missed lkast sentence that was

how to validate numbers and alphabetic characters??

any how..thx alot one of the prb is solved,,numbers are validated now wud u plz do one more favour?
tell me how to validate text
(alphabetic characters)

[shahjapan]

private void txtPort_Validating(object sender, CancelEventArgs e){
            try
            {
                int x = int.Parse(txtPort.Text);
                errorProvider1.SetError(txtPort, "");
            }
            catch (Exception ex)
            {
                errorProvider1.SetError(txtPort, ex.Message);
            }
        }

In .NET we have ErrorProvider control tr
txtPort_Validating write this function in your textbox1 validation event.



[quote=software student]

Hello:
I dont understand what do you want?
But maybe I can help you, check this link:
Check if a textbox contains a number..

Hope I helped you.[/QU
:)
actually i missed lkast sentence that was

how to validate numbers and alphabetic characters??

any how..thx alot one of the prb is solved,,numbers are validated now wud u plz do one more favour?
tell me how to validate text
(alphabetic characters)