您需要确保已全局安装了grunt

很可能在最终路径上有空间。

您可以通过引用路径来解决这个问题，从而允许使用空格。例如:

xcopy "$(SolutionDir)\Folder Name\File To Copy.ext" "$(TargetDir)" /R /Y /I

在我的情况下，在调用命令之前，我必须先“CD”(更改目录)到适当的目录，因为我调用的可执行文件在我的项目目录中。

例子:

cd "$(SolutionDir)"
call "$(SolutionDir)build.bat"

Yet another reason: If your pre-build event references another projects bin path and you see this error when running msbuild, but not Visual Studio, then you have to manually arrange the projects in the *.sln file (with a text editor) so that the project you are targeting in the event is built before the event's project. In other words, msbuild uses the order that projects are listed in the *.sln file whereas VS uses knowledge of project dependencies. I had this happen when a tool that creates a database to be included in a wixproj was listed after the wixproj.

我在编校Path环境变量时导致了此错误。编辑后，我不小心将Path=添加到路径字符串的开头。使用这样一个格式不正确的路径变量，我无法在命令行上运行XCopy(没有找到命令或文件)，Visual Studio拒绝运行构建后步骤，并引用代码9009的错误。

XCopy通常位于c:\ windows \ system32。一旦Path环境变量允许XCopy在DOS提示符下得到解析，Visual Studio就很好地构建了我的解决方案。

Tfa的回答被否决了，但实际上会导致这个问题。 多亏了hanzolo，我在输出窗口中找到了以下内容:

3>'gulp' is not recognized as an internal or external command,
3>operable program or batch file.
3>D:\dev\<filepath>\Web.csproj(4,5): error MSB3073: The command "gulp clean" exited with code 9009.

在运行npm install -g gulp后，我不再得到这个错误。如果在Visual Studio中出现此错误，请检查输出窗口并查看问题是否是未设置的环境变量。