private string[] ColeccionDeCortes(string Path)
{
DirectoryInfo X = new DirectoryInfo(Path);
FileInfo[] listaDeArchivos = X.GetFiles();
string[] Coleccion;
foreach (FileInfo FI in listaDeArchivos)
{
//Add the FI.Name to the Coleccion[] array,
}
return Coleccion;
}
我想转换FI。Name到字符串中，然后将其添加到数组中。我该怎么做呢?
当前回答
string[] MyArray = new string[] { "A", "B" };
MyArray = new List<string>(MyArray) { "C" }.ToArray();
//MyArray = ["A", "B", "C"]
其他回答
我会这样做:
DirectoryInfo X = new DirectoryInfo(Path);
FileInfo[] listaDeArchivos = X.GetFiles();
string[] Coleccion = new String[] { };
foreach (FileInfo FI in listaDeArchivos)
{
Coleccion = Coleccion.Concat(new string[] { FI.Name }).ToArray();
}
return Coleccion;
string[] MyArray = new string[] { "A", "B" };
MyArray = new List<string>(MyArray) { "C" }.ToArray();
//MyArray = ["A", "B", "C"]
因为数组的长度是固定的，所以不能向数组中添加项。您要查找的是List<string>，稍后可以使用List . toarray()将其转换为数组，例如。
List<string> list = new List<string>();
list.Add("Hi");
String[] str = list.ToArray();
创建一个扩展:
public static class TextFunctions
{
public static string [] Add (this string[] myArray, string StringToAdd)
{
var list = myArray.ToList();
list.Add(StringToAdd);
return list.ToArray();
}
}
并这样使用它:
foreach (FileInfo FI in listaDeArchivos)
{
//Add the FI.Name to the Coleccion[] array,
Coleccion.Add(FI.Name);
}
这段代码用于在Android中为spinner准备动态值数组:
List<String> yearStringList = new ArrayList<>();
yearStringList.add("2017");
yearStringList.add("2018");
yearStringList.add("2019");
String[] yearStringArray = (String[]) yearStringList.toArray(new String[yearStringList.size()]);
