集合变量问题

发布于 2024-10-15 23:29:52 字数 305 浏览 2 评论 0原文

假设我有一个字符串格式的通用集合。我想将这些值添加到标签中，我将如何去做，我尝试了一些我在这里读到的东西，但似乎无法让它发挥作用。

List<string> listcollection= new List<string>();

....Populate Collection Here....

MsgLabel.Text = Controls[string.Format(("MyInts: {0}", listcollection[1].Text));

任何帮助都会很棒。

谢谢。

原文

Lets say that I have a generic collection in the string format. I want to extra the values to a label how would I go about doing that ive tried a few things ive read on here but cant seem to get it to work.

List<string> listcollection= new List<string>();

....Populate Collection Here....

MsgLabel.Text = Controls[string.Format(("MyInts: {0}", listcollection[1].Text));

Any help would be awesome.

Thanks.

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痴情 2024-10-22 23:29:52

有多种方法可以理解您的问题：

您想要提取第二个值并将其放置在标签中，如示例所示
您想要将所有值组合到一个列表中（MyInts 是复数）

提取第二个值

MsgLabel.Text = string.Format("MyInts: {0}", listcollection[1]);

将它们组合起来

您'您可能正在寻找 string.Join 。

这适用于您发布的示例：

MsgLabel.Text = string.Format("MyInts: {0}", string.Join(", ", listcollection));

该代码需要 .NET 4.0，否则 string.Join 需要一个数组，因此如果您不在 4.0 上，则需要以下代码：

MsgLabel.Text = string.Format("MyInts: {0}", string.Join(", ", listcollection.ToArray()));

There's multiple ways to understand your question:

You want to extract the 2nd value and place it in the label, as shown in the example
You want to combine all the values into a list (MyInts is plural)

Extract 2nd value

MsgLabel.Text = string.Format("MyInts: {0}", listcollection[1]);

To combine them

You're probably looking for string.Join.

This would work with the example you've posted:

MsgLabel.Text = string.Format("MyInts: {0}", string.Join(", ", listcollection));

That code requires .NET 4.0, otherwise string.Join requires an array, so if you're not on 4.0, the following code is what you need:

MsgLabel.Text = string.Format("MyInts: {0}", string.Join(", ", listcollection.ToArray()));

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浅唱々樱花落 2024-10-22 23:29:52

如果您要创建通用字符串集合，则不应调用“Text”属性 collection[idx].Text。只需使用 .Join 或从集合中提取特定元素即可。

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天邊彩虹 2024-10-22 23:29:52

如果你想组合所有字符串（在我看来你想这样做），你可以这样做：

List<string> listcollection = new List<string>();
string myText = string.Empty;
for (int i = 0; i < listcollection.Count; i++) {
   myText += ("string no. " + (i - 1).ToString() + ": " + listcollection[i] + Environment.NewLine);
}
MsgLabel.Text = myText;

或者使用 , 而不是 Environment.NewLine if你想用 , 分割它

编辑：请参阅 Lasse V. Karlsen 的评论以获得更快的解决方案。谢谢你的提示！

If you want to combine all the strings (and it seems to me like you wanna do that), you can do something like:

List<string> listcollection = new List<string>();
string myText = string.Empty;
for (int i = 0; i < listcollection.Count; i++) {
   myText += ("string no. " + (i - 1).ToString() + ": " + listcollection[i] + Environment.NewLine);
}
MsgLabel.Text = myText;

or use , instead of Environment.NewLine if you want to split it by ,

EDIT: See the comment of Lasse V. Karlsen for a quicker solution. Thanks for the hint!

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