What is the C# equivalent of CType in VB.NET?

casting equivalent vb.net-to-c# ctype
Girish picture Girish · Dec 10, 2010 · Viewed 28.9k times · Source

I am trying to convert the example provided in MSDN article Creating Dynamic Data Entry User Interfaces to C#, but am stuck at the following code:

CType(dq, IUIBuildingBlock).QuestionText = reader("QuestionText")

How do I convert the above VB.NET statement to C#?

Answer

Cody Gray picture Cody Gray · Dec 10, 2010

In C#, you can specify a cast by putting the type you want to cast to in parenthesis in front of the reference variable that you want to cast ((type)instance).

So, to cast the object (dq) to the type IUIBuildingBlock, you could use the following code:

((IUIBuildingBlock)dq).QuestionText = reader("QuestionText");

(Note that this will throw an exception if the cast is done on an object that doesn't implement IUIBuildingBlock, but so will CType, so I assume that is not a problem.)

Related questions

How do I convert a string to a number in PHP?

I want to convert these types of values, '3', '2.34', '0.234343', etc. to a number. In JavaScript we can use Number(), but is there any similar method available in PHP? Input Output '2' 2 '2.34' 2.34 '0.3454545…

Read More
Change column type in pandas

I want to convert a table, represented as a list of lists, into a Pandas DataFrame. As an extremely simplified example: a = [['a', '1.2', '4.2'], ['b', '70', '0.03'], ['x', '5', '0']] df = pd.DataFrame(…

Read More
Get int value from enum in C#

I have a class called Questions (plural). In this class there is an enum called Question (singular) which looks like this. public enum Question { Role = 2, ProjectFunding = 3, TotalEmployee = 4, NumberOfServers = 5, TopBusinessConcern = 6 } In the Questions class I have a get(int foo) function …

Read More