var countries = new List<string>() { "India", "Australia", "Austria", "Canada", "Mexico", "Japan" };
foreach(string country in countries)
{
if (country.StartsWith("A"))
{
countries.Remove(country);
}
}
foreach (string country in countries)
{
Console.WriteLine(country);
}
例如，我想擺脫以字母 A 開頭的國家/地區
uj5u.com熱心網友回復：
我建議您使用RemoveAll()（鏈接到檔案），它需要一個條件才能知道是否必須洗掉該元素
你可以這樣做：
// The List declaration you provided
var countries = new List<string>() { "India", "Australia", "Austria", "Canada", "Mexico", "Japan" };
// Replace your first `foreach(string country in countries)` with this line
countries.RemoveAll(country => country.StartsWith("A"));
// The way of displaying data you provided
foreach (string country in countries)
{
Console.WriteLine(country);
}
編輯：正如 fubo 在評論中所說，“如果你想執行不區分大小寫的搜索，你應該提供一個StringComparison而不是使用ToUpper()”，就像我在未經編輯的答案中所做的那樣。
代碼將是：
// The List declaration you provided
var countries = new List<string>() { "India", "Australia", "Austria", "Canada", "Mexico", "Japan" };
// Replace your first `foreach(string country in countries)` with this line
countries.RemoveAll(country => country.StartsWith("a", StringComparison.InvariantCultureIgnoreCase));
// The way of displaying data you provided
foreach (string country in countries)
{
Console.WriteLine(country);
}
uj5u.com熱心網友回復：
方法與 RemoveAll()
List<string> countries = new List<string>() { "India", "Australia", "Austria", "Canada", "Mexico", "Japan" };
countries.RemoveAll(country => country.StartsWith("A"));
countries.ForEach(Console.WriteLine);
uj5u.com熱心網友回復：
是的，您可以使用該RemoveAll()屬性來獲得您想要的結果。
var countries = new List<string>() { "India", "Australia", "Austria"};
countries.RemoveAll(Country=>country.StartsWith("A"))
轉載請註明出處，本文鏈接：https://www.uj5u.com/net/367370.html
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