Unable to cast object of type 'System.DBNull' to type 'System.String'. Error
92187
Unable to cast object of type 'System.DBNull' to type 'System.String`
22361
String concatenation with Null
61392
The cast to value type 'Int32' failed because the materialized value is null
94938
.NET : How do you get the Type of a null object?
67597
Can constructor return a null object?
131486
Is there a built in .NET exception that indicates an illegal object state?
63521
How to pass a nullable type to a P/invoked function
71927
DB2 ERRORCODE=-4229, SQLSTATE=null
140738
Does setting Java objects to null do anything anymore?
124080
How does the assignment of the null literal to a System.Nullable type get handled by .Net (C#)?
138057
CAST throwing error when run in stored procedure but not when run as raw query
43769
How do I Parameterize a null string with DBNull.Value clearly and quickly
75428
LINQ to Entities does not recognize the method 'System.String ToString()' method, and this method cannot be translated into a store expression
114718
Is there a DBMS that allows the "= NULL" syntax?
128522
Unable to cast object of type 'Windows.UI.Xaml.Controls.ItemsControl' to type 'Windows.UI.Xaml.Controls.Image'
19989
Apex JSON.serialize() with null values (RELOADED)
114605
How to create a DbDataAdapter given a DbCommand or DbConnection?