C# 如何在主测试方法之外创建数据源文件

但是这里MyTestInitialize方法没有执行，因为MyTestMethod试图与DataFile.xml建立数据连接，但失败了。我想在数据驱动测试中使用DataFile.xml文件作为数据文件，它应该在运行时创建。如果有任何其他解决方法，请帮助我。

将

[TestInitialize（）]

更改为

[AssemblyInitialize（）]

或

[ClassInitialize（）]

是否有效

    [TestInitialize()]
    public void MyTestInitialize()
    {
        XmlTextWriter writer = new XmlTextWriter("DataFile.xml", Encoding.UTF8);
        writer.Formatting = Formatting.Indented;
        writer.WriteProcessingInstruction("xml", "version='1.0' encoding='utf-8'");
        writer.WriteStartElement("TestCases");
        DirectoryInfo dir = new DirectoryInfo("Metadata");
        foreach (FileInfo file in dir.GetFiles())
        {
            writer.WriteElementString("TestCase", file.Name);
        }
        writer.Close();
    }



    [TestMethod()]
    [DeploymentItem("FunctionalTestsProject\\TestData")]
    [DataSource("Microsoft.VisualStudio.TestTools.DataSource.XML",
               "|DataDirectory|\\DataFile.xml",
               "TestCase", DataAccessMethod.Sequential)]
    public void MyTestMethod()
    {
        I want to use DataFile created by MyTestInitialize method.
     }