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thereamp;#39;s still more improvements we can make in our reservement wpf application for example what if a database interaction takes a little bit longer than expected we would probably want to show some kind of loading indication there what if the user enters data that is invalid would probably want to notify them about that data so that they could fix it and lastly what if some kind of error happens whenever we save data to the database or read data we would probably want to report that error to the user so that being said we are going to focus on setting up loading indicators implementing data validation for user input and reporting error messages on our ui so weamp;#39;re going to start off by setting up a loading indicator whenever we load data from the database so what iamp;#39;m going to do is iamp;#39;m going to hard code my database interaction to take a little bit longer than expected so we will just do a task delay and delay for two seconds so 2 000 milliseconds and now