如何从.NET Core应用程序加载VS数据库项目?

Question

默认情况下，有一个Visual Studio SQL Server数据库项目，在.sqlproj文件中具有这样的导入行：

<PropertyGroup>
<VisualStudioVersion Condition="'$(VisualStudioVersion)' == ''">11.0</VisualStudioVersion>
<!-- Default to the v11.0 targets path if the targets file for the current VS version is not found -->
<SSDTExists Condition="Exists('$(MSBuildExtensionsPath)MicrosoftVisualStudiov$(VisualStudioVersion)SSDTMicrosoft.Data.Tools.Schema.SqlTasks.targets')">True</SSDTExists>
<VisualStudioVersion Condition="'$(SSDTExists)' == ''">11.0</VisualStudioVersion>
</PropertyGroup>
<Import Condition="'$(SQLDBExtensionsRefPath)' != ''" Project="$(SQLDBExtensionsRefPath)Microsoft.Data.Tools.Schema.SqlTasks.targets" />
<Import Condition="'$(SQLDBExtensionsRefPath)' == ''" Project="$(MSBuildExtensionsPath)MicrosoftVisualStudiov$(VisualStudioVersion)SSDTMicrosoft.Data.Tools.Schema.SqlTasks.targets" />

虽然 VisualStudioVersion 11.0 的 SSDT 没有目录，但它可以从 Visual Studio 正确打开。但是，当尝试使用 Microsoft.Build 包从 .NET Core 应用程序加载项目时，它会抛出错误：

找不到导入的项目"D：\TestApp\TestApp\bin\Debugetcoreapp3.1\Microsoft\VisualStudio\v11.0\SSDT\Microsoft.Data.Tools.Schema.SqlTasks.targets"。确认导入声明"D：\TestApp\TestApp\bin\Debugetcoreapp3.1\Microsoft\VisualStudio\v11.0\SSDT\Microsoft.Data.Tools.Schema.SqlTasks.targets"中的表达式正确，并且该文件存在于磁盘上。
D：\Database1\Database1\Database1.sqlproj

项目加载代码如下所示

var project = new Microsoft.Build.Evaluation.Project(@"D:Database1Database1Database1.sqlproj");

Answer 1

我想要的只是使用 AddItem 方法将一些项添加到项目中 ，然后保存它。

正如我所说，您可以忽略错过的导入，我相信这将防止错误发生，为此您可以使用 Project 构造函数的以下重载：

public Project (string projectFile, System.Collections.Generic.IDictionary<string,string> globalProperties, string toolsVersion, Microsoft.Build.Evaluation.ProjectCollection projectCollection, Microsoft.Build.Evaluation.ProjectLoadSettings loadSettings);

将loadSettings设置为IgnoreMissingImports：

/// <summary>
/// Flags for controlling the project load.
/// </summary>
/// <remarks>
/// This is a "flags" enum, allowing future settings to be added
/// in an additive, non breaking fashion.
/// </remarks>
[Flags]
[SuppressMessage("Microsoft.Design", "CA1008:EnumsShouldHaveZeroValue", Justification = "Public API.  'Default' is roughly equivalent to 'None'. ")]
public enum ProjectLoadSettings
{
/// <summary>
/// Normal load. This is the default.
/// </summary>
Default = 0,
/// <summary>
/// Ignore nonexistent targets files when evaluating the project
/// </summary>
IgnoreMissingImports = 1,
/// <summary>
/// Record imports including duplicate, but not circular, imports on the ImportsIncludingDuplicates property
/// </summary>
RecordDuplicateButNotCircularImports = 2,
/// <summary>
/// Throw an exception and stop the evaluation of a project if any circular imports are detected
/// </summary>
RejectCircularImports = 4,
/// <summary>
/// Record the item elements that got evaluated
/// </summary>
RecordEvaluatedItemElements = 8,
/// <summary>
/// Ignore empty targets files when evaluating the project
/// </summary>
IgnoreEmptyImports = 16,
/// <summary>
/// By default, evaluations performed via <see cref="Project"/> evaluate and collect elements whose conditions were false (e.g. <see cref="Project.ItemsIgnoringCondition"/>).
/// This flag turns off this behaviour. <see cref="Project"/> members that collect such elements will throw when accessed.
/// </summary>
DoNotEvaluateElementsWithFalseCondition = 32,
/// <summary>
/// Ignore invalid target files when evaluating the project
/// </summary>
IgnoreInvalidImports = 64,
/// <summary>
/// Whether to profile the evaluation
/// </summary>
ProfileEvaluation = 128,
}

项目加载设置枚举 |ProjectLoadSettings enum [github]