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PODisabling/Disallowing items in ComboBox to be selected depending on selection ( C# )
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copied!<p>I have two comboBoxes, one that lists the 7 days of the week and the other with a set of times (7 different times, each as a string).</p> <p>The problem i'm having is i want to be able to stop the user from being able to select certain items depending on the day/time selected. </p> <p>An example being that on a Monday the 7-9am comboBox option should not be available due to it being "Pre-Booked", if that makes sense.</p> <p>The days and times are used in relation to a 7x7 array, each index in the combo boxes relating to an element in the array so depending on the selected index in the combo boxes i can use the correct array element.</p> <p>What would be the best way to go about it? I've tried a series of if statements but it got to a point where it would just slip through them and continue to process data when its not meant to.</p> <p>EDIT:</p> <p>Added example attempt for jmatthews3865</p> <pre><code>private void buttonOK_Click(object sender, EventArgs e) { if (comboBoxTime.SelectedIndex != 0 && comboBoxDay.SelectedIndex != 5 | comboBoxDay.SelectedIndex != 6) { if (comboBoxTime.SelectedIndex != 1 | comboBoxTime.SelectedIndex != 2 | comboBoxTime.SelectedIndex != 3 && comboBoxDay.SelectedIndex != 0 | comboBoxDay.SelectedIndex != 1 | comboBoxDay.SelectedIndex != 2 | comboBoxDay.SelectedIndex != 3 | comboBoxDay.SelectedIndex != 4) { if (comboBoxTime.SelectedIndex != 5 | comboBoxTime.SelectedIndex != 6 && comboBoxDay.SelectedIndex != 5 | comboBoxDay.SelectedIndex != 6) { lock (this) { int date = this.comboBoxDay.SelectedIndex; int time = this.comboBoxTime.SelectedIndex; if (IsUser) { string fName = textBoxFName.Text; string lName = textBoxLName.Text; string pCode = textBoxPCode.Text; AddUserBooking(date, time, fName, lName, pCode); } else { int mNo = int.Parse(textBoxMNo.Text); AddMemberBooking(date, time, mNo); } } CloseBookingForm(); } } } else { MessageBox.Show("Select a valid Date/Time and try again"); } } </code></pre> <p>It seems to work fine on the first if statement block, fails past that though.</p> <p>If the selected day is Saturday/Sunday ([5],[6]) then the times [0] and [5],[6] are unavailable. From Monday to Friday the times including [1] to [3] are unavailable.</p> <p>If it wasn't for my extremely short deadline and the lecturer who can't make a sensible assignment then i'd gladly refactor all of it.</p> <p>EDIT2:</p> <p>I've managed to implement a system that seems to be working fairly well. It's based on Steven Adams solution which essentially uses an if statament in a boolean method. I call the method before processing the booking and if it returns true then the booking can be made, otherwise a message box is shown with the appropiate error.</p>

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