字符串数组中的空字段转换为'0'

Question

您好我有一堆字符串数组，字段中可能有空或无空格（见下文），如何使用最简单的代码将它们转换为字符串＆＃39; 0＆＃39;？< / p>

目标是转换以下数组

string[] NullFields = {"101.002","A","12","","3","","B"};

就像

string[] NullFields = {"101.002","A","12","0","3","0","B"};

非常感谢。

Answer 1

一个简单的循环怎么样？

for (int i = 0; i < NullFields.Length; i++) {
    if (string.IsNullOrEmpty(NullFields[i])
         NullFields[i] = "0";
}

Answer 2

使用LINQ很容易：

string[] NullFields = {"101.002","A","12","","3","","B"}
                      .Select(x => string.IsNullOrEmpty(x) ? "0" : x)
                      .ToArray();

Answer 3

首先是C＃中的"" != null，两者之间存在巨大差异 - bedtime reading。

其次，你走了：

var myArray = NullFields.Select(s => String.IsNullOrEmpty(s) ? "0" : s)
                        .ToArray();

Answer 4

这将解决您的问题。

string[] NullFields = { "101.002", "A", "12", "", "3", "", "B" };
for (int i = 0; i < NullFields.Length; i++)
{
    if (NullFields[i] == null || NullFields[i] == "")
        NullFields[i] = "0";
}

希望它会对你有所帮助！