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LinqDataSourceValidationException Class

Describes an exception that occurred during validation of new or modified values before values are inserted, updated, or deleted by a LinqDataSource control.

System.Object
  System.Exception
    System.Web.UI.WebControls.LinqDataSourceValidationException

Namespace:  System.Web.UI.WebControls
Assembly:  System.Web.Extensions (in System.Web.Extensions.dll)

[SerializableAttribute]
public class LinqDataSourceValidationException : Exception, 
	IDynamicValidatorException, ISerializable

The LinqDataSourceValidationException type exposes the following members.

  NameDescription
Public methodLinqDataSourceValidationException()Initializes a new instance of the LinqDataSourceValidationException class with a system-supplied message that describes the error.
Public methodLinqDataSourceValidationException(String)Initializes a new instance of the LinqDataSourceValidationException class with a specified message that describes the error.
Protected methodLinqDataSourceValidationException(SerializationInfo, StreamingContext)Initializes a new instance of the LinqDataSourceValidationException class with serialized data.
Public methodLinqDataSourceValidationException(String, IDictionary<String, Exception>)Initializes a new instance of the LinqDataSourceValidationException class with a specified message that describes the error, and a collection of references to inner exceptions.
Public methodLinqDataSourceValidationException(String, Exception)Initializes a new instance of the LinqDataSourceValidationException class with a specified error message and a reference to the inner exception.
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  NameDescription
Public propertyDataGets a collection of key/value pairs that provide additional user-defined information about the exception. (Inherited from Exception.)
Public propertyHelpLinkGets or sets a link to the help file associated with this exception. (Inherited from Exception.)
Public propertyHResultGets or sets HRESULT, a coded numerical value that is assigned to a specific exception. (Inherited from Exception.)
Public propertyInnerExceptionGets the Exception instance that caused the current exception. (Inherited from Exception.)
Public propertyInnerExceptionsGets one or more exceptions that occurred when new or modified data was being validated.
Public propertyMessageGets a message that describes the current exception. (Inherited from Exception.)
Public propertySourceGets or sets the name of the application or the object that causes the error. (Inherited from Exception.)
Public propertyStackTraceGets a string representation of the immediate frames on the call stack. (Inherited from Exception.)
Public propertyTargetSiteGets the method that throws the current exception. (Inherited from Exception.)
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  NameDescription
Public methodEquals(Object)Determines whether the specified object is equal to the current object. (Inherited from Object.)
Protected methodFinalizeAllows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
Public methodGetBaseExceptionWhen overridden in a derived class, returns the Exception that is the root cause of one or more subsequent exceptions. (Inherited from Exception.)
Public methodGetHashCodeServes as the default hash function. (Inherited from Object.)
Public methodGetObjectDataGets information about the exception and adds it to the SerializationInfo object. (Overrides Exception.GetObjectData(SerializationInfo, StreamingContext).)
Public methodGetTypeGets the runtime type of the current instance. (Inherited from Exception.)
Protected methodMemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Public methodToStringCreates and returns a string representation of the current exception. (Inherited from Exception.)
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  NameDescription
Protected eventSerializeObjectStateOccurs when an exception is serialized to create an exception state object that contains serialized data about the exception. (Inherited from Exception.)
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The LinqDataSourceValidationException class contains type conversion and property setter exceptions. All of the exceptions that are thrown during validation are contained in the InnerExceptions collection. You can retrieve each validation exception by iterating through the InnerExceptions collection.

You typically handle exceptions in the Updating, Deleting, and Inserting events. If a validation exception is thrown, the Exception property of the LinqDataSourceUpdateEventArgs, LinqDataSourceDeleteEventArgs, or LinqDataSourceInsertEventArgs object contains a LinqDataSourceValidationException object. If no exception is thrown, the Exception property contains null.

To handle validation exceptions, create a handler for the Updating, Deleting, or Inserting event. In the event handler, check whether the Exception property of the event argument class contains a value other than null. If the Exception property is not null, one or more validation exceptions were thrown and you can retrieve each validation exception in the InnerExceptions property.

A validation exception can occur if a value does not match the type of the property. For example, trying to update an integer property by using non-numeric characters causes a validation exception. A LINQ to SQL class can also contain customized validation criteria that make sure that the property contains a value that is within an expected range or pattern.

The following example shows an event handler for the Updating event. It displays any validation exception messages by using a Label control.

Protected Sub LinqDataSource_Updating(ByVal sender As Object, _
        ByVal e As LinqDataSourceUpdateEventArgs)
    If (e.Exception IsNot Nothing) Then
        For Each innerException As KeyValuePair(Of String, Exception) _
               In e.Exception.InnerExceptions
            Label1.Text &= innerException.Key & ": " & _
                innerException.Value.Message & "<br />"
        Next
        e.ExceptionHandled = True
    End If
End Sub

[C#]

protected void LinqDataSource_Updating(object sender, 
        LinqDataSourceUpdateEventArgs e)
{
    if (e.Exception != null)
    {
        foreach (KeyValuePair<string, Exception> innerException in 
             e.Exception.InnerExceptions)
        {
        Label1.Text += innerException.Key + ": " + 
            innerException.Value.Message + "<br />";
        }
        e.ExceptionHandled = true;
    }
}

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.
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