Evaluate Multiple In One Statement

richard smith

How would one evaluate 3 fields to determine if they are blank? I am creating an intranet page for my company, and the login screen requires the users 1st name, users last name and their company id. What I am needing to do is if all 3 fields are blank, highlight (and by highlight I mean backcolor) all 3 textboxes red (txtFirstName, txtLastName, txtComID), if 1st Name is entered BUT the other 2 fields remain null, then only highlight txtLastName and txtComID Red. What is the way to evaluate in C# to check all 3 fields and only highlight RED the field's that are null?

4 Replies

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Vulpes13y ago
Accepted answer
Try:

bool validated = true;

if (txtFirstName.Text == "")
{
textFirstName.BackColor = Color.Red;
validated = false;
}

if (txtLastName.Text == "")
{
textLastName.BackColor = Color.Red;
validated = false;
}

if (txtComID.Text == "")
{
textComID.BackColor = Color.Red;
validated = false;
}

if (validated)
{
// none are empty, execute appropriate code
}
Phani Bhushan13y ago
If it is web application you can simply use Validation COntrol (Required Field validator)
Vulpes13y ago
Just add these three lines before the rest of the code:

txtFirstName.Text = txtFirstName.Text.Trim();
txtLastName.Text = txtLastName.Text.Trim();
txtComID.Text = txtComID.Text.Trim();
richard smith13y ago
Genious way of executing! Never would have thought of that! Thank you for the help!

One other question...how could I trim out an extra space in the fields? For example, let's say the user input a space after entering there ComID, instead of causing that to fail the validation check, is there a way to programatically remove the blank space at the end?