Validating Data on a Property Level (GridView)

[Brian]

The following link describes how to validate data on a property level for a GridView. 
http://www.telerik.com/help/silverlight/gridview-managing-data-validation.html

However, this does not seem to work (code sample below).  The documentation says that throwing a new Exception will result in a binding validation error and the column will enter into an invalid state.  I simply get an unhandled exception error.

 

 

 

 

public long TradeKeyValidated

 

 

{

 

 

 

    get { return this.TradeKey; }

 

 

 

 

    set

 

 

    {

 

 

 

        if (value < 0) throw new Exception("Some exception message.");

 

 

 

 

        if (value != this.TradeKey)

 

 

        {

 

 

 

            this.TradeKey = value;

 

 

 

 

            this.RaisePropertyChanged("TradeKeyValidated");

 

 

        }

 

    }

 

}

Please advise.  Thanks!

[Maya]

Hello Brian,

Generally, the exception you get is a handled one and once you continue running the application, you will get the error message in the ToolTip. However, the more recommended way for handling such scenarios is to use INotifyDataErrorInfo. You may take a look at this blog post for an example. Another approach may be to handle the CellValidating event, but this validation will be a grid-specific.

Best wishes,
Maya
the Telerik team