声明名为字符串+整数值的变量

Question

I want to add tabpages to tabcontrol1, and need to have tabpages created dynamically

 int a=10;
 TabPage tabpage"+a+" = new TabPage();

How can i achieve this :

tabpage10
tabpage12
tabpage13

created dynamically

Answer 1

You can't, and you shouldn't try to. Instead, either have an array or list (if your numbers are all positive, effectively starting near 0) or a Dictionary<int, TabPage> for a more general mapping.

Whenever you find you have a collection of values, you should reach for a collection type - rather than a lot of different variables which happen to have names starting with a common prefix.

Answer 2

You can't dynamically generate variable names - and nor would you want to. Instead, consider adding the tab page to a collection.

List<TabPage> tabs = new List<TabPage>();
tabs.Add(new TabPage()); // 0
tabs.Add(new TabPage()); // 1
tabs.Add(new TabPage()); // 2

Answer 3

If you're in winforms:

int a = 10;
tabcontrol1.TabPages.Add(new TabPage("text") { Name = "tabpage" + a });
a++;

Then to access

var page = tabcontrol1.TabPages[0];

or by name

var page = tabcontrol1.TabPages["tabpage" + a];