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    <p>You need to specify the MemberNames that are associated with the ValidationResult. The constructor of ValidationResult has an additional parameter to specify the properties that are associated with the result. If you do not specify any properties, the result is handled as a validation error on entity level.</p> <p>So in your case, it should be fixed, when you pass in the name of the property to the constructor of the ValidationResult.</p> <pre><code>protected override ValidationResult IsValid(object value, ValidationContext validationContext) { if (value != null &amp;&amp; this.disallowedCharacters.Count() &gt; 0) { string Value = value.ToString(); foreach(char val in this.disallowedCharacters) { if ((!this.CaseSensitive &amp;&amp; Value.ToLower().Contains(val)) || Value.Contains(val)) { //return new ValidationResult(string.Format(this.ErrorMessage != null ? this.ErrorMessage : "'{0}' is not allowed an allowed character.", val.ToString())); string errorMessage = string.Format(this.ErrorMessage != null ? this.ErrorMessage : "'{0}' is not allowed an allowed character.", val.ToString()); return new ValidationResult(errorMessage, new string[] { validationContext.MemberName}); } } } return ValidationResult.Success; } </code></pre> <p>For the bindings you don´t need to specify anything else. So the simple Binding</p> <pre><code>{Binding Value} </code></pre> <p>should display errors, cause <strong>ValidatesOnNotifyDataErrors</strong> is set to true implicitly. <strong>NotifyOnValidationError</strong> populates ValidationErrors to other elements like ValidationSummary.</p> <p>Jeff Handly has a really goog <a href="http://jeffhandley.com/archive/2010/09/22/RiaServicesStandardValidators.aspx" rel="nofollow">blog post</a> about Validation in WCF Ria Services and Silverlight, i can recommened to read.</p>
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    1. COThank you very much. That fixed my problem.
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      1. USBenjamin Vesterby
 

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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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