C# set float to null

Null pointers. Definition of NULL. Visual Basic. NULL pointer internal representation. Software Development. Remote Development and Debugging Tools. Nested class structure question. How to use Nuget assembly as files with visual studio community. Opening Balance. Ms access. Undesired Name? Follow us! Get the Latest Bytes Updates. You always can use the following read-only properties to examine and get a value of a nullable value type variable:. HasValue indicates whether an instance of a nullable value type has a value of its underlying type.

Value gets the value of an underlying type if HasValue is true. The following example uses the HasValue property to test whether the variable contains a value before displaying it:. You can also compare a variable of a nullable value type with null instead of using the HasValue property, as the following example shows:. If you want to assign a value of a nullable value type to a non-nullable value type variable, you might need to specify the value to be assigned in place of null.

Use the null-coalescing operator?? GetValueOrDefault T method for the same purpose :. GetValueOrDefault method. You can also explicitly cast a nullable value type to a non-nullable type, as the following example shows:. At run time, if the value of a nullable value type is null , the explicit cast throws an InvalidOperationException. A non-nullable value type T is implicitly convertible to the corresponding nullable value type T?

The predefined unary and binary operators or any overloaded operators that are supported by a value type T are also supported by the corresponding nullable value type T? These operators, also known as lifted operators , produce null if one or both operands are null ; otherwise, the operator uses the contained values of its operands to calculate the result. For the bool? For more information, see the Nullable Boolean logical operators section of the Boolean logical operators article.

Shailesh, Please mark the post as answered if it answers your question. Proposed as answer by Michael A. Ball Thursday, November 10, PM. Hi All, I was using the following expression with Suddeps expression and it worked fine until i came across an error.

It still gives me errors. Hi Sudeep, Thanks for the reply. I will try the above expression also. Hi Sudeep, I still get an error. Do you know what it could be? Hi All, Can i use a data conversion task for this? I am stuck with this rock bottom : Thanks Lucki. I am stuck with this rock bottom : This issue will come even in data conversion task. As you have string values like "NULL" in your data. I would be done in derived column as opposed to data conversion. Any solution on this, folks??

Nullable data types. Contents 1. Assignment 2. Syntax of null data type. Examples of using null values in variables of base types 4. The purpose. Example 5.