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Part 50 - Detect errors in views at compile time

Suggested Videos 
Part 47 - Displaying images in MVC
Part 48 - Custom html helpers in mvc
Part 49 - Html encoding in mvc

In this video, we will discuss, detecting errors in views at compile-time rather than at run-time.

The following code will display employee's FullName and Gender. Here we are working with a strongly typed view. Employee is the model class for this view. This class has got "FullName" and "Gender" properties. 
@model MVCDemo.Models.Employee

    <div class="display-label">
         @Html.DisplayNameFor(model => model.FullName)
    <div class="display-field">
        @Html.DisplayFor(model => model.FullName)

    <div class="display-label">
         @Html.DisplayNameFor(model => model.Gender)
    <div class="display-field">
        @Html.DisplayFor(model => model.Gender)

For example, if you mis-spell FullName property as shown below, and when you compile the project, you wouldn't get any compile time errors.
@Html.DisplayNameFor(model => model.FullName1)

You will only come to know, about the error when the page crashes at run-time. If you want to enable compile time error checking for views in MVC
1. Open MVC project file using a notepad. Project files have the extension of .csproj or .vbproj
2. Search for MvcBuildViews under PropertyGroup. MvcBuildViews is false by default. Turn this to true as shown below.
3. Save the changes.

If you now build the project, you should get compile time error.

Please Note: Pre-compiling views is different from compile-time error checking. We will discuss pre-compiling views in a later video session.

1 comment:

  1. in my case, i have to choose C# MvcDemo file not the MvcDemo.csproj file. thank you !!


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