如何将列表项添加到RichTextBox？

Question

The code im trying wich is not working:

private void clearRichtextBox()
        {
            richTextBox2.Clear();
            foreach (KeyValuePair<string, List<string>> kvp in LocalyKeyWords)
            {
                richTextBox2.AppendText("Url: " + kvp.Key + " --- " + "Localy KeyWord: " + kvp.Value);
            }

        }

LocalyKeyWords is a List > type of Dictionary. Where string is the Key and List is the Value.

http://www.google.com is the Key for example and google is the value.

Now in this case LocalyKeywords contain 3 indexs each one have a Key and a Value. I want after i cleared the richTextBox2 to add from the List all the Keys and Values to the richTextBox in a Format like this:

Url: http://www.google.com --- Localy Keyword: google
Url: http://www.cnet.com --- Localy Keyword: cnet
Url: http://www.microsoft.com --- Localy Keyword: microsoft

But im not getting it the way i did it.

How can i do it ? Something wrong with the foreach i prefer to make it with FOR and not foreach.

The List is built as Key,Value in the text file on my hard disk fhr format is like this:

http://www.cnet.com,cnet

Then in the constructor im reading it from the text file and put back the key and value into the List like this:

private void richTextBoxLoadKeys(Dictionary<string, List<string>> dictionary, string FileName)
        {
            string line = System.String.Empty;
            using (StreamReader sr = new StreamReader(keywords))
            {
                while ((line = sr.ReadLine()) != null)
                {
                    string[] tokens = line.Split(',');
                    dictionary.Add(tokens[0], tokens.Skip(1).ToList());
                    richTextBox2.AppendText("Url: " + tokens[0] + " --- " + "Localy KeyWord: " + tokens[1]);
                }
                sr.Close();
            }
        }

After loading the key and values in the constructor and using a breakpoint on the List i see:

Answer 1

您应该遍历kvp.Value，它也是一个列表，因此您必须在RichTextBox中添加列表中的每个项目。

Answer 2

You need to either iterate through the strings in Value or just report the first string in Value. What you are getting is the ToString() of a List. I'm curious whether you really need a List for the value since your example only has one Local Keyword per key. Perhaps you should be creating a Dictionary instead.