如何将string.Join应用于文本框数组？

Question

In my C# WinForm application, I have an array of TextBox on my form, which looks like:

[MyTextBox[0]] . [MyTextBox[1]] . [MyTextBox[2]] . [MyTextBox[3]] . [MyTextBox[4]]

As you can see, there is a separator "." between each of them. The user will enter 5 different values in those TextBoxes , and submit them. When processing, I would like to gather all these 5 TextBoxes as one string separated by ".". For example, if the user entered

[34] . [56] . [78] . [90] . [12]

and submitted, I would like to process this as one string: 34.56.78.90.12 . I was thinking using string.Join(".", strArray) would be nice and elegant, but I realized that this is an array of TextBox , not an array of string. To extract the text portion from the TextBox , I have to use MyTextBox[index].Text but this obviously won't work with string.Join(".", strArray) .

Now, I ended up writing the following code:

string[] dataEntered = new string[5];
for(int i=0; dataEntered.Length; i++)
{
    dataEntered[i] = MyTextBox[i].Text;
}
string str = string.Join(".", dataEntered);

or, using a string concatenation within a loop too, adding "." each time except after the last value.

But these are both kind of ugly, and I was wondering if there is any better way of achieving this. Can someone give me advice, please?

Answer 1

So MyTextBox is the TextBox[] ? You can use LINQ:

IEnumerable<string> alltexts = MyTextBox.Select(txt => txt.Text);
string str = string.Join(".", alltexts);

Answer 2

使用linq：

string str = string.Join(".", MyTextBox.Select(t => t.Text));