Creates a sequence that corresponds to the source sequence, concatenating it with the sequence resulting from calling an exception handler function in case of an error.

Namespace: System.Linq
Assembly: System.Interactive.Providers (in System.Interactive.Providers.dll)

public static IQueryable<TSource> Catch<TSource, TException>(
	this IQueryable<TSource> source,
	Expression<Func<TException, IEnumerable<TSource>>> handler
)
where TException : Exception

Type: System.Linq.IQueryable<TSource>
Source sequence.

Type: System.Linq.Expressions.Expression<Func<TException, IEnumerable<TSource>>>
Handler to invoke when an exception of the specified type occurs.

Source sequence element type.

Exception type to catch.

Type: IQueryable<TSource>
Source sequence, concatenated with an exception handler result sequence in case of an error.

In Visual Basic and C#, you can call this method as an instance method on any object of type IQueryable<TSource>. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).

QueryableEx Class
System.Linq Namespace