This sample shows how to create a list class that implements IEnumerable<int> and the yield keyword to enable foreach iteration over the contents of the list. Two properties are defined, one returning the odd numbers, the other returning the even numbers.
This sample code is provided to illustrate a concept and should not be used in applications or Web sites, as it may not illustrate the safest coding practices. Microsoft assumes no liability for incidental or consequential damages should the sample code be used for purposes other than as intended.
To open the sample file in Solution Explorer
Click Download Sample.
The File Download message box appears.
Click Open, and on the left column of the zip folder window, click Extract all files.
The Extraction Wizard opens.
Click Next. You can change the directory that the files will be extracted to, and then click Next again.
Make sure that the Show extracted files check box is selected, and click Finish.
Double-click the sample's .sln file.
The sample solution is displayed in Solution Explorer. You might get a security warning that says the solution location is not trusted. Click OK to continue.
To build and run the Yield Code sample within Visual Studio
On the Debug menu, click Start Without Debugging.
To build and run the Yield Code sample from the Command Line
Use the Change Directory (cd) command to change to the Yield directory.
Type the following:
csc Yield.cs Yield