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    <p>Imagine you were in a room and it is your job to make sure that blocks inserted through a hole in the wall were round. To achieve this value, the hole is made round. Your job, when you get a square block, is to sound the alarm, which is 3 bells.</p> <p>Now, someone comes along and attempts to place a square block through the round hole. Ooops... It doesn't fit. So you never get the square block and can't sound the alarm. Instead, the person sounds an alarm of 2 bells because he can't fit the square block in the round hole.</p> <p>In this comparison, the regular expression is you. You are told to validate something that cannot possibly happen, because abc cannot be stored in a decimal value. Therefore, the value of Latitude or Longitude can never NOT be a valid decimal value (particularly since you did not use a nullable decimal, therefore it's default value is always 0.0 and cannot be null).</p> <p>Meanwhile, the MVC framework notices that you're trying to stuff a character string into a decimal value, which it can't do.. so it throws a generic error.</p> <p>In other words, using decimal automatically validates that it's a valid decimal number. If you use a nullable decimal, then it validates it's a decimal number or null. You can then use the Required validator to ensure it's not null and pass your own message.</p> <p>If you want to use the regular expression validator, you will have to make Lattitude and Longitude strings, and then convert them to decimals later in the process.</p>
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    1. POAsp.Net MVC 4 Regular Express Attribute does not show message of mine
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    1. USErik Funkenbusch
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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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If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

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