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    <p>i would second cdonners comment. having a combobox with disabled options could be a pretty confusing situation for users. isn't there a way to filter the options based on whether the time slots are already booked?</p> <p>some sort of custom control which displays time ranges would be ideal form something like this. this way you could load existing events so that users would be able to see why they aren't able to select a specific time range. i understand that this may go a little further than what you want.</p> <p>something like <a href="http://www.daypilot.org/demo/Calendar/" rel="nofollow noreferrer">this</a> is what i'm thinking... (assuming asp.net, not winforms)</p> <p>but if you're intent on using the combobox, i would go with cdonners suggestion, or you could handle the OnSelectedIndexChanged event in order to validate that the selected choice is available and notify the user if not. sounds like this might be what you're trying to do now. could you post the code that isn't working?</p> <p>edit:</p> <p>it looks like you're making this much more complicated that it has to be. but since it seems like this is homework (correct me if i'm wrong) i don't want to just write out a solution. also, you should tag your question as homework if appropriate.</p> <ol> <li>Grab selected index values of each combo</li> <li>Ensure that the selected index values are valid together </li> <li>If the combination is not, then notify the user</li> <li>Otherwise process accordingly based on whether the current context is for a user or a member.</li> </ol> <p>try setting up the available values of each combo into two separate enums and process based on that rather than hard coding the vlaues.</p>
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    1. COI've added an example and a bit more information =]
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    2. COOh no its an assignment i've already completed, i'm just trying to add some validation to make it easier for the user. If i had the time i'd probably redo the entire thing from the ground up. I'll try your suggestion as it seems to be similar to what im trying to achieve myself anyway.
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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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