Question

我有一个字符串 - filterArg 和字符串数组 - arrayColDef ，如下面的代码所示。我正在尝试将字符串 filterArg 拆分为 |~| 并尝试从 filterArg 匹配 arrayColDef 值。任何人都可以告诉我如何在代码中注明 ToDo 的值

static void Main(string[] args) { Hashtable ht = new Hashtable(); string filterArg = "ZipCode=2130|~|ZipPlace=KNAPPER"; string[] arrayColDef = { "ZipCode", "Space", "ZipPlace" }; foreach (var item in arrayColDef) { var key = item; var value = filterArg.Split(new string[] { "|~|" }, StringSplitOptions.RemoveEmptyEntries);//TODO: here value should hold = 2130 for first itteration ht.Add(item, value); } }

Answer 1

我认为你在arrayColDef上进行复杂迭代，通过拆分字符串迭代并提取值更容易。你可以做类似下面的事情。

static void Main(string[] args)
{
    Hashtable ht = new Hashtable();
    string filterArg = "ZipCode=2130|~|ZipPlace=KNAPPER";
    string[] arrayColDef = { "ZipCode", "Space", "ZipPlace" };

    var properties = filterArg.Split(new string[] { "|~|" }, StringSplitOptions.RemoveEmptyEntries);
    foreach (var property in properties)
    {
        var nameValue = property.Split(arrayColDef, StringSplitOptions.RemoveEmptyEntries);
        var item = property.Split('=').First(); // get key
        var value = nameValue.First().TrimStart('='); // get value
        ht.Add(item, value);
    }
}

Answer 2

Hashtable ht = new Hashtable();
string filterArg = "ZipCode=2130|~|ZipPlace=KNAPPER";
string[] arrayColDef = { "ZipCode", "Space", "ZipPlace" };
var filterArr = filterArg.Split(new string[] { "|~|" }, StringSplitOptions.RemoveEmptyEntries)
    .Select(x => x.Split('='));
foreach (var item in arrayColDef)
{
    var key = item;
    var v = filterArr.FirstOrDefault(x => x[0] == item);
    if (v != null&&v.Length>1)
    {
        ht.Add(item, v[1]);
    }
}

foreach (var key in ht.Keys)
{
    Console.WriteLine("Key:{0} Value:{1}", key, ht[key]);
}

Space已被忽略

Answer 3

过滤器分割为

var value = filterArg.Split(new string[] { "|~|" }, StringSplitOptions.RemoveEmptyEntries);//TODO: here value should hold = 2130 for first itteration

返回一个数组。您可以通过过滤和替换为linq来获取最终值：

string finalValue = value.Where(m => m.Contains(item)).Select(m => m.Replace(item+"=","")).FirstOrDefault();

然后，该值位于finalValue变量中。

问候

Linq查询从Array中获取具有匹配子字符串值

3 个答案: