Question

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我正在尝试将某些clases中的某些数据与windows窗体应用程序中的组合框值进行匹配。

到目前为止我所做的事情看起来像这样：

（此类有一些Form1()值我想要存储在组合框中，具体取决于region[]）

enum Project

下一个类存储某个模式文件

public Form1()
{
    formatWorker.DoWork += worker_DoWork;
    formatWorker.RunWorkerCompleted += worker_RunWorkerCompleted;

    extractWorker.DoWork += extractWorker_DoWork;
    extractWorker.ProgressChanged += extractWorker_ProgressChanged;
    extractWorker.RunWorkerCompleted += extractWorker_RunWorkerCompleted;

    InitializeComponent();
    projectBox.DataSource = Constant.projects.ToString(); 
    projectBox.SelectedIndex = (int)Regions.Project.NBTevo;
    PopulateUsbDevices();
}

class Regions
{
    public enum Project
    {
        NBT = 0,
        NBTevo = 1,
        MGU = 2
    }

    string[] regions = { "ARG", "AUSNZ", "ECE", "IND", "ISR", "LA", "ME", "NA", "NAF", "NANT", "PAL", "SEA", "TC", "ZA" };

    public string[] GetRegionsForProject(Project proj)
    {
        //all directories from /Databases/proj[i]
        string[] allDirectories = Constant.ExtractFileNames(Directory.GetDirectories(Constant.path + "//" + Constant.projects[(int)proj]));


        string[] availableSubDirectories = Enumerable.Intersect(allDirectories, regions).ToArray();

        return availableSubDirectories;
    }
}

我正在尝试构建依赖项，例如，根据class DBVersion { public string[] GetVersion(string proj, string region) { string pattern = "^" + proj + "_" + region + "_" + @"(\d+\.\d+\.\d+_[a-zA-Z0-9_]+)\.iso$"; string[] files = Directory.GetFiles(Constant.path + "\\" + proj + "\\" + region + "\\images\\", "*.iso", SearchOption.AllDirectories); return files; } }和projectBox中的选定值，某些版本将显示在regionBox

中

versionBox

运行后，我private void projectBox_SelectedIndexChanged(object sender, EventArgs e) { isoPaths.Clear(); populateRegions((Regions.Project)Enum.Parse(typeof(Regions.Project), projectBox.SelectedValue.ToString())); regionBox.SelectedIndex = 0; regionBox_SelectedIndexChanged(null, null); } private void regionBox_SelectedIndexChanged(object sender, EventArgs e) { string[] versionPaths = version.GetVersion(projectBox.SelectedValue.ToString(), regionBox.SelectedItem.ToString()); isoPaths.Clear(); isoPaths.AddRange(versionPaths); populateVersions(Constant.ExtractFileNames(versionPaths)); //versionBox.SelectedIndex = 0; //versionBox_SelectedIndexChanged(null, null); } private void versionBox_SelectedIndexChanged(object sender, EventArgs e) { } private void populateRegions(Regions.Project proj) { this.regionBox.DataSource = region.GetRegionsForProject(proj); } private void populateVersions(string[] versions) { this.versionBox.DataSource = version.GetVersion( projectBox.SelectedItem.ToString(), region‌Box.SelectedItem.ToS‌tring()); }

中没有任何内容

Answer 1

如果您想将DataSource绑定到ComboBox，则应使用：

实现IList接口或数组
的对象

根据ComboBox.DataSource Property documentation

所以Form1的构造函数中的这一行：

projectBox.DataSource = Constant.projects.ToString();

必须改为：

projectBox.DataSource = Constant.projects;

其余的组合框是空的，因为问题从一个级联到另一个级联。如果一个是空的，则其余部分无法正确填充

匹配枚举与组合框列表似乎不起作用

1 个答案: