I Have To Implement A Code For Marks So I Can't Insert The Character Values Help Me

Question

1.00/5 (1 vote)

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C#

double n1, n2, n3, n4, n5, n6;
           float res;
           // n1 = Convert.ToInt32(txttui.Text);
           n1 = Convert.ToDouble(textBox1.Text);
           n2 = Convert.ToDouble(textBox2.Text);
           n3 = Convert.ToDouble(textBox3.Text);
           n4 = Convert.ToDouble(textBox4.Text);
           n5 = Convert.ToDouble(textBox5.Text);
           n6 = Convert.ToDouble(textBox6.Text);
           //  n6 = Convert.ToInt32(txthostl.Text);
           res = n1 + n2 + n3 + n4 + n5 + n6;

           //txttotalfee.Text = Convert.ToString(res);
           textBox27.Text = Convert.ToString(res);

Posted 27-Nov-14 19:27pm

Member 11197373

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Comments

Thanks7872 28-Nov-14 1:32am

Don't you understand that we can not read your mind? We don't know what you are working on. We can not see your screen. After reading above title, no one can identify what the problem is.

OriginalGriff 28-Nov-14 1:57am

This is not a good question - we cannot work out from that little what you are trying to do.
Remember that we can't see your screen, access your HDD, or read your mind.
Use the "Improve question" widget to edit your question and provide better information.

TheRealSteveJudge 28-Nov-14 4:52am

I agree to the comments above.

Is is that you want to achieve that the user can enter only numbers?

2 solutions

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Praveen Kumar Upadhyay · Answer 1 · 2014-11-27T19:49:00

I think you are trying to prevent users to input character values. If this is your question then I have found below source code on internet. You can user this.

C#

private void textBox1_KeyPress(object sender, KeyPressEventArgs e)
{
    if (!char.IsControl(e.KeyChar) && !char.IsDigit(e.KeyChar) &&
        (e.KeyChar != '.'))
    {
            e.Handled = true;
    }

    // only allow one decimal point
    if ((e.KeyChar == '.') && ((sender as TextBox).Text.IndexOf('.') > -1))
    {
        e.Handled = true;
    }
}

You can use the same method for all your textboxes.

TheRealSteveJudge · Answer 2 · 2014-11-27T23:56:00

Solution 2

Hi,

I would like to suggest reading the following article:

Simple Validation in WPF[^]

Best regards,
Stephan

Posted 27-Nov-14 23:56pm

TheRealSteveJudge