blocks|key|758335|text|最明显的建议是使用List<string>，您可能已经从其他答案中读到过。在实际的开发场景中，这绝对是最好的方式。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|758336|当然，我想让事情更有趣(这是我的一天)，所以我会直接回答你的问题。|758337|下面是几个在string[]中添加和删除元素的函数……|758338|string[]+Add(string[]+array,+string+newValue){
++++int+newLength+=+array.Length+%2B+1;

++++string[]+result+=+new+string[newLength];

++++for(int+i+=+0;+i+<+array.Length;+i%2B%2B)
++++++++result[i]+=+array[i];

++++result[newLength+-1]+=+newValue;

++++return+result;
}

string[]+RemoveAt(string[]+array,+int+index){
++++int+newLength+=+array.Length+-+1;

++++if(newLength+<+1)
++++{
++++++++return+array;//probably+want+to+do+some+better+logic+for+removing+the+last+element
++++}

++++//this+would+also+be+a+good+time+to+check+for+"index+out+of+bounds"+and+throw+an+exception+or+handle+some+other+way

++++string[]+result+=+new+string[newLength];
++++int+newCounter+=+0;
++++for(int+i+=+0;+i+<+array.Length;+i%2B%2B)
++++{
++++++++if(i+==+index)//it+is+assumed+at+this+point+i+will+match+index+once+only
++++++++{
++++++++++++continue;
++++++++}
++++++++result[newCounter]+=+array[i];
++++++++newCounter%2B%2B;
++++}++

++++return+result;
}|code-block|syntax|javascript|758339|entityMap^0|9|C|0|0|6|8|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|T|8|@]|D|@]|E|$]]|$1|H|3|I|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@]|E|$]]|$1|J|3|K|5|L|7|X|8|@]|D|@]|E|$M|N]]|$1|O|3|-4|5|6|7|Y|8|@]|D|@]|E|$]]]|P|$]]

The obvious suggestion would be to use a <code>List&lt;string&gt;</code> instead, which you will have already read from the other answers. This is definitely the best way in a real development scenario.

Of course, I want to make things more interesting (my day that is), so I will answer your question directly.

Here are a couple of functions that will Add and Remove elements from a <code>string[]</code>...

<pre><code>string[] Add(string[] array, string newValue){
 int newLength = array.Length + 1;

 string[] result = new string[newLength];

 for(int i = 0; i &lt; array.Length; i++)
 result[i] = array[i];

 result[newLength -1] = newValue;

 return result;
}

string[] RemoveAt(string[] array, int index){
 int newLength = array.Length - 1;

 if(newLength &lt; 1)
 {
 return array;//probably want to do some better logic for removing the last element
 }

 //this would also be a good time to check for "index out of bounds" and throw an exception or handle some other way

 string[] result = new string[newLength];
 int newCounter = 0;
 for(int i = 0; i &lt; array.Length; i++)
 {
 if(i == index)//it is assumed at this point i will match index once only
 {
 continue;
 }
 result[newCounter] = array[i];
 newCounter++;
 } 

 return result;
}
</code></pre>

blocks|key|758534|text|如果你真的不想(或者不能)使用泛型集合而不是数组，Array.Resize就是C#版本的redim+preserve：|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|758535|var++oldA+=+new+[]+{1,2,3,4};
Array.Resize(ref+oldA,10);
foreach(var+i+in+oldA)+Console.WriteLine(i);+//1+2+3+4+0+0+0+0+0+0|code-block|syntax|javascript|758536|entityMap|0|LINK|mutability|MUTABLE|url|http://msdn.microsoft.com/en-us/library/bb348051.aspx^0|P|C|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@$A|R|B|S|1|T]]|C|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|C|$G|H]]|$1|I|3|-4|5|6|7|V|8|@]|9|@]|C|$]]]|J|$K|$5|L|M|N|C|$O|P]]]]

If you really won't (or can't) use a generic collection instead of your array, <a href="http://msdn.microsoft.com/en-us/library/bb348051.aspx">Array.Resize</a> is c#'s version of redim preserve:

<pre><code>var oldA = new [] {1,2,3,4};
Array.Resize(ref oldA,10);
foreach(var i in oldA) Console.WriteLine(i); //1 2 3 4 0 0 0 0 0 0
</code></pre>

blocks|key|1773656|text|不要使用数组-使用一个通用的List，它允许你动态添加项目。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1773657|如果不能这样做，可以使用Array.Copy或Array.CopyTo将数组复制到更大的数组中。|1773658|entityMap|0|LINK|mutability|MUTABLE|url|http://msdn.microsoft.com/en-us/library/6sh2ey19.aspx|1|http://msdn.microsoft.com/en-us/library/9k6f9ye6.aspx|2|http://msdn.microsoft.com/en-us/library/7af81ytt.aspx^0|E|4|E|4|0|0|C|A|N|C|C|A|1|N|C|2|0^^$0|@$1|2|3|4|5|6|7|T|8|@$9|U|A|V|B|C]]|D|@$9|W|A|X|1|Y]]|E|$]]|$1|F|3|G|5|6|7|Z|8|@$9|10|A|11|B|C]|$9|12|A|13|B|C]]|D|@$9|14|A|15|1|16]|$9|17|A|18|1|19]]|E|$]]|$1|H|3|-4|5|6|7|1A|8|@]|D|@]|E|$]]]|I|$J|$5|K|L|M|E|$N|O]]|P|$5|K|L|M|E|$N|Q]]|R|$5|K|L|M|E|$N|S]]]]

Don't use an array - use a generic <a href="http://msdn.microsoft.com/en-us/library/6sh2ey19.aspx" rel="noreferrer"><code>List&lt;T&gt;</code></a> which allows you to add items dynamically.

If this is not an option, you can use <a href="http://msdn.microsoft.com/en-us/library/9k6f9ye6.aspx" rel="noreferrer"><code>Array.Copy</code></a> or <a href="http://msdn.microsoft.com/en-us/library/7af81ytt.aspx" rel="noreferrer"><code>Array.CopyTo</code></a> to copy the array into a larger array.

blocks|key|1054074|text|由于数组实现了IEnumerable<T>，因此可以使用Concat|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1054075|string[]+strArr+=+{+"foo",+"bar"+};
strArr+=+strArr.Concat(new+string[]+{+"something",+"new"+});|code-block|syntax|javascript|1054076|或者更合适的方法是使用支持内联操作的集合类型。|1054077|entityMap^0|7|E|S|6|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]|$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|T|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|U|8|@]|D|@]|E|$]]|$1|M|3|-4|5|6|7|V|8|@]|D|@]|E|$]]]|N|$]]

Since arrays implement <code>IEnumerable&lt;T&gt;</code> you can use <code>Concat</code>:

<pre><code>string[] strArr = { "foo", "bar" };
strArr = strArr.Concat(new string[] { "something", "new" });
</code></pre>

Or what would be more appropriate would be to use a collection type that supports inline manipulation.

blocks|key|758452|text|使用List<string>而不是string[]。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|758453|List允许您以良好的性能添加和删除项目。|758454|entityMap^0|2|C|H|8|0|0^^$0|@$1|2|3|4|5|6|7|J|8|@$9|K|A|L|B|C]|$9|M|A|N|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|O|8|@]|D|@]|E|$]]|$1|H|3|-4|5|6|7|P|8|@]|D|@]|E|$]]]|I|$]]

Use <code>List&lt;string&gt;</code> instead of <code>string[]</code>.

List allows you to add and remove items with good performance.

blocks|key|758354|text|关于这个的是什么：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|758355|List<int>+tmpList+=+intArry.ToList();+tmpList.Add(anyInt);+intArry+=+tmpList.ToArray();|offset|length|style|CODE|758356|entityMap^0|0|0|2F|0^^$0|@$1|2|3|4|5|6|7|J|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|K|8|@$D|L|E|M|F|G]]|9|@]|A|$]]|$1|H|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|I|$]]

What's abaut this one:

<code>List&lt;int&gt; tmpList = intArry.ToList();
tmpList.Add(anyInt);
intArry = tmpList.ToArray();</code>

blocks|key|1773754|text|一个线条：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1773755|++++string[]+items+=+new+string[]+{+"a",+"b"+};

++++//+this+adds+"c"+to+the+string+array:
++++items+=+new+List<string>(items)+{+"c"+}.ToArray();++++++|code-block|syntax|javascript|1773756|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

One liner:
<pre><code> string[] items = new string[] { &quot;a&quot;, &quot;b&quot; };

 // this adds &quot;c&quot; to the string array:
 items = new List&lt;string&gt;(items) { &quot;c&quot; }.ToArray(); 
</code></pre>

blocks|key|5091951|text|你应该看看List+object。列表倾向于更好地根据您的需要动态更改。数组就没那么多了。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|5091952|entityMap|0|LINK|mutability|MUTABLE|url|http://msdn.microsoft.com/en-us/library/6sh2ey19.aspx^0|5|4|A|6|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@$9|O|A|P|B|C]]|D|@$9|Q|A|R|1|S]]|E|$]]|$1|F|3|-4|5|6|7|T|8|@]|D|@]|E|$]]]|G|$H|$5|I|J|K|E|$L|M]]]]

You should take a look at the <code>List</code> <a href="http://msdn.microsoft.com/en-us/library/6sh2ey19.aspx" rel="nofollow">object</a>. Lists tend to be better at changing dynamically like you want. Arrays not so much...

blocks|key|1054126|text|您可以使用泛型集合，如List<>|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1054127|List<string>+list+=+new+List<string>();

//+add
list.Add("element");

//+remove
list.Remove("element");|code-block|syntax|javascript|1054128|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

You can use a generic collection, like List&lt;>

<pre><code>List&lt;string&gt; list = new List&lt;string&gt;();

// add
list.Add("element");

// remove
list.Remove("element");
</code></pre>

blocks|key|758365|text|您可以使用以下代码片段：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|758366|static+void+Main(string[]+args)
{



++++++++Console.WriteLine("Enter+number:");
++++++++int+fnum+=+0;
++++++++bool+chek+=+Int32.TryParse(Console.ReadLine(),out+fnum);++++++++++++


++++++++Console.WriteLine("Enter+number:");
++++++++int+snum+=+0;
++++++++chek+=+Int32.TryParse(Console.ReadLine(),out+snum);


++++++++Console.WriteLine("Enter+number:");
++++++++int+thnum+=+0;
++++++++chek+=+Int32.TryParse(Console.ReadLine(),out+thnum);


++++++++int[]+arr+=+AddToArr(fnum,snum,thnum);

++++++++IOrderedEnumerable<int>+oarr+=+arr.OrderBy(delegate(int+s)
++++++++{++
++++++++++++return+s;
++++++++});


++++++++Console.WriteLine("Here+your+result:");


++++++++oarr.ToList().FindAll(delegate(int+num)+{

++++++++++++Console.WriteLine(num);

++++++++++++return+num+>+0;

++++++++});



}



public+static+int[]+AddToArr(params+int[]+arr)+{

++++return+arr;
}|code-block|syntax|javascript|758367|我希望这会对你有所帮助，只需改变类型|758368|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

You can use this snippet:

<pre><code>static void Main(string[] args)
{



 Console.WriteLine("Enter number:");
 int fnum = 0;
 bool chek = Int32.TryParse(Console.ReadLine(),out fnum); 


 Console.WriteLine("Enter number:");
 int snum = 0;
 chek = Int32.TryParse(Console.ReadLine(),out snum);


 Console.WriteLine("Enter number:");
 int thnum = 0;
 chek = Int32.TryParse(Console.ReadLine(),out thnum);


 int[] arr = AddToArr(fnum,snum,thnum);

 IOrderedEnumerable&lt;int&gt; oarr = arr.OrderBy(delegate(int s)
 { 
 return s;
 });


 Console.WriteLine("Here your result:");


 oarr.ToList().FindAll(delegate(int num) {

 Console.WriteLine(num);

 return num &gt; 0;

 });



}



public static int[] AddToArr(params int[] arr) {

 return arr;
}
</code></pre>

I hope this will help to you, just change the type

I would like to programmatically add or remove some elements to a string array in C#, but still keeping the items I had before, a bit like the VB function <a href="http://msdn.microsoft.com/en-us/library/w8k3cys2%28v=vs.71%29.aspx">ReDim Preserve</a>.

Adding elements to a C# array

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我想以编程方式向C#中的字符串数组添加或删除一些元素，但仍然保留以前拥有的项，有点像VB函数。

问向C#数组添加元素
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