cutting from string in C#

Question

My strings look like that: aaa/b/cc/dd/ee . I want to cut first part without a / . How can i do it? I have many strings and they don't have the same length. I tried to use Substring(), but what about / ?

I want to add 'aaa' to the first treeNode, 'b' to the second etc. I know how to add something to treeview, but i don't know how can i receive this parts.

Answer 1

Use Substring and IndexOf to find the location of the first /

To get the first part:

// from memory, need to test :)
string output = String.Substring(inputString, 0, inputString.IndexOf("/"));

To just cut the first part:

// from memory, need to test :)
string output = String.Substring(inputString, 
                                 inputString.IndexOf("/"),     
                                 inputString.Length - inputString.IndexOf("/"); 

Answer 2

Maybe the Split() method is what you're after?

string value = "aaa/b/cc/dd/ee";

string[] collection = value.Split('/');

Identifies the substrings in this instance that are delimited by one or more characters specified in an array, then places the substrings into a String array.

Based on your updates related to a TreeView (ASP.Net? WinForms?) you can do this:

foreach(string text in collection)
{
    TreeNode node = new TreeNode(text);
    myTreeView.Nodes.Add(node);
}

Answer 3

你可能想做：

string[] parts = "aaa/b/cc/dd/ee".Split(new char[] { '/' });

Answer 4

听起来这是一份工作... 正则表达式 ！

Answer 5

One way to do it is by using string.Split to split your string into an array, and then string.Join to make whatever parts of the array you want into a new string.

For example:

var parts = input.Split('/');
var processedInput = string.Join("/", parts.Skip(1));

This is a general approach. If you only need to do very specific processing, you can be more efficient with string.IndexOf , for example:

var processedInput = input.Substring(input.IndexOf('/') + 1);