Evaluate Multiple In One Statement

Question

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?

Vulpes · 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 }

Vulpes · Answer

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();

Phani Bhushan · Answer

If it is web application you can simply use Validation COntrol (Required Field validator)

richard smith · Answer

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?