Numeric Conditions

How to implement a Condition like my Code below?

private bool Validate()
{
if (txtCost.Text.Trim() is not numeric?????)
{
 MessageBox.Show("field must be numeric");
}
{
Whing Dela CruzAsked:
Who is Participating?
 
käµfm³d 👽Commented:
Try this:

private bool Validate()
{
    double d;

    if (!double.TryParse(txtCost.Text, out d))
    {
        MessageBox.Show("field must be numeric");
    }
}

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Whing Dela CruzAuthor Commented:
Perfect! Thanks a lot...
0
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