Top "Dbnull" questions

avoid checking for DataRow.IsDBNull on each column?

My code is 2x longer than it would be if I could automatically set IsDBNull to "" or simply roll over …

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How to deal with SqlDataReader null values in VB.net

I have the follwoing code that performs a query and returns a result. However, I looked around and found some …

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How do I set a field to DBNull in Entity Framework

How do you set a field to DBNull in Entity Framework? The fields are strongly typed so you cannot set …

entity-framework dbnull

Simple way to convert dbNull to a string in VB.NET

I'm looking for a simpler way to check if a value is dbNull and to convert it to an empty …

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Null value in a parameter varbinary datatype

How can I add a null value in a parameter varbinary datatype? When I execute the following code: using (SqlConnection …

c# winforms sql-server-2008 parameters dbnull

Which of IsDBNull and IsNull should be used?

If in VB.NET I have DataRow and I want to test whether a column value is Null, should I …

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ASP.Net check value with DBNULL

I have the following code foreach (DataRowView dr in Data) { if (dr == System.DBNull.Value) { nedID = 1; } } but i get the …

asp.net dbnull

How to check for NULL in MySqlDataReader by the column's name?

How can I check for a NULL value in an open MySqlDataReader? The following doesn't work; it's always hitting the …

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Checking for DBNull throws a StrongTypingException

I am using a dataset to pull data from a DB. One of the fields in a row is NULL. …

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Dealing with DBNull.Value

I frequently have to deal with DataTables connected to grid controls, custom updating always seems to produce a lot of …

c# .net dbnull